High Flying Electronics Technology HF A21 SMT User Manual

HF-A21-SMT Embedded WiFi Module User Manual
HF-A21-SMT
Embedded WiFi Module User Manual
V1.1
Support IEEE802.11b/g/n Wireless Standards
Support TCP/UDP/HTTP Network Protocols
Support UART/Ethernet Data Interface
Support Work As STA/AP/AP+STA Mode
Support Router/Bridge Mode Networking
Support AT+ Instruction Set for Configuration
Support Friendly Web Configuration Page
Support Palmodic Signal
Support Smart Link Application Tools
Support UART Free/Auto-Frame Function
Single +3.3V Power Supply
Small Size: 25 x 40mm
FCC/CE Certificated
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HF-A21-SMT Embedded WiFi Module User Manual
FCC STATEMENT :
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
Warning: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
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HF-A21-SMT Embedded WiFi Module User Manual
TABLE OF CONTENTS
1. PRODUCT OVERVIEW ............................................................................................................... 9
1.1. General Specification ............................................................................................................. 9
1.2. Hardware Introduction .......................................................................................................... 10
1.2.1. Pins Definition .................................................................................................................. 10
1.2.2. Mechanical Size ............................................................................................................... 12
1.2.3. On-board Chip Antenna ................................................................................................... 12
1.2.4. Evaluation Kit ................................................................................................................... 14
1.2.5. Order Information ............................................................................................................. 15
1.3. Hardware Reference Design ................................................................................................ 15
1.3.1. Hardware Typical Application .......................................................................................... 15
1.3.2. 10/100M Ethernet Interface ............................................................................................. 16
1.3.2.1. Ethernet Connection with Transformer ........................................................................ 16
1.3.2.2. Ethernet Connection without Transformer ................................................................... 16
1.3.3. UART Interface ................................................................................................................ 17
1.3.4. Power Interface ................................................................................................................ 17
1.4. Software Reference Design.................................................................................................. 18
1.4.1. Transparent Transmission Mode ..................................................................................... 18
1.4.2. Configuration Mode .......................................................................................................... 18
1.4.3. Multi-TCP Link Connection .............................................................................................. 19
1.4.4. TCPB Function ................................................................................................................. 19
1.4.5. Palmodic Signal ............................................................................................................... 19
2. FUNCT IONAL DESCRIPTION ................................................................................................. 21
2.1. Wireless Networking ............................................................................................................. 21
2.1.1. Basic Wireless Network Based On AP (Infrastructure) ................................................... 21
2.1.2. Wireless Network Based On AP Network ........................................................................ 21
2.1.3. Wireless Network Based On AP+STA ............................................................................. 22
2.2. Auto- Frequency Function ................................................................................................... 23
2.3. Security .................................................................................................................................. 23
2.4. UART Frame Scheme ............................................................................................................ 23
2.4.1. UART Free-Frame ........................................................................................................... 23
2.4.2. UART Auto-Frame ........................................................................................................... 24
2.5. Address Binding ................................................................................................................... 24
2.6. Ethernet Interface Communication ..................................................................................... 24
2.6.1. HF-A21-SMT Ethernet Interface Networking (As AP) ..................................................... 24
2.6.2. HF-A21-SMT Ethernet Interface Networking (As STA, N-Ver) ........................................ 25
2.6.3. HF-A21-SMT Ethernet Interface Networking (As STA, Z-Ver) ........................................ 25
2.7. Search Function for STA ...................................................................................................... 25
2.8. Work Mode ............................................................................................................................. 25
2.9. Network Protocol .................................................................................................................. 26
2.10. Parameters Configuration ................................................................................................ 26
2.11. Firmware Upgrade ............................................................................................................. 27
3. OPERATIO N GU IDEL INE ......................................................................................................... 28
3.1. Configuration via Web Accessing ....................................................................................... 28
3.1.1. Open Web Management Interface ................................................................................... 28
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HF-A21-SMT Embedded WiFi Module User Manual
3.1.2. Mode Selection Page ....................................................................................................... 29
3.1.3. AP Interface Setting Page ............................................................................................... 29
3.1.4. STA Interface Setting Page ............................................................................................. 29
3.1.5. Application Setting Page .................................................................................................. 30
3.1.6. Device Management Page .............................................................................................. 31
3.2. HF-A21-SMT Usage Introduction ......................................................................................... 31
3.2.1. Software Debug Tools ..................................................................................................... 31
3.2.2. Network Connection ......................................................................................................... 31
3.2.3. Module Debug .................................................................................................................. 32
3.3. Typical Application Examples ............................................................................................. 34
3.3.1. Wireless Control Application ............................................................................................ 34
3.3.2. Remote Management Application .................................................................................... 35
3.3.3. Transparent Serial Port Application ................................................................................. 35
3.3.4. Wireless Data Acquisition Card Application..................................................................... 36
4. AT+IN STRUCTION INTRODUCTION ...................................................................................... 37
4.1. Configuration Mode .............................................................................................................. 37
4.1.1. Switch to Configuration Mode .......................................................................................... 37
4.2. AT+ Instruction Set Overview .............................................................................................. 38
4.2.1. Instruction Syntax Format ................................................................................................ 38
4.2.2. AT+ Instruction Set .......................................................................................................... 39
4.2.2.1. AT+E ............................................................................................................................ 40
4.2.2.2. AT+ENTM ..................................................................................................................... 40
4.2.2.3. AT+NETP ..................................................................................................................... 40
4.2.2.4. AT+UART ..................................................................................................................... 41
4.2.2.5. AT+ UARTF .................................................................................................................. 41
4.2.2.6. AT+ UARTFT................................................................................................................ 42
4.2.2.7. AT+ UARTFL ................................................................................................................ 42
4.2.2.8. AT+TMODE .................................................................................................................. 42
4.2.2.9. AT+WMODE................................................................................................................. 42
4.2.2.10. AT+WSKEY .............................................................................................................. 43
4.2.2.11. AT+WSSSID ............................................................................................................. 43
4.2.2.12. AT+ WSLK ................................................................................................................ 43
4.2.2.13. AT+WEBU ................................................................................................................ 44
4.2.2.14. AT+WAP ................................................................................................................... 44
4.2.2.15. AT+WAKEY .............................................................................................................. 44
4.2.2.16. AT+HIDESSID .......................................................................................................... 45
4.2.2.17. AT+MSLP ................................................................................................................. 45
4.2.2.18. AT+WSCAN .............................................................................................................. 45
4.2.2.19. AT+ TCPLK .............................................................................................................. 45
4.2.2.20. AT + TCPDIS ............................................................................................................ 46
4.2.2.21. AT+ WANN ............................................................................................................... 46
4.2.2.22. AT+ LANN ................................................................................................................ 46
4.2.2.23. AT + DHCPDEN ....................................................................................................... 47
4.2.2.24. AT+ DHCPGW .......................................................................................................... 47
4.2.2.25. AT+ TCPTO .............................................................................................................. 47
4.2.2.26. AT+ MAXSK ............................................................................................................. 47
4.2.2.27. AT+TCPB.................................................................................................................. 48
4.2.2.28. AT+TCPPTB ............................................................................................................. 48
4.2.2.29. AT+TCPADDB .......................................................................................................... 48
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HF-A21-SMT Embedded WiFi Module User Manual
4.2.2.30. AT+TCPTOB ............................................................................................................ 48
4.2.2.31. AT+TCPLKB ............................................................................................................. 49
4.2.2.32. AT+EPHY ................................................................................................................. 49
4.2.2.33. AT+STTC .................................................................................................................. 49
4.2.2.34. AT+DOMAIN ............................................................................................................. 49
4.2.2.35. AT+FRLDEN ............................................................................................................. 49
4.2.2.36. AT+RELD.................................................................................................................. 50
4.2.2.37. AT+Z ......................................................................................................................... 50
4.2.2.38. AT+MID..................................................................................................................... 50
4.2.2.39. AT+WRMID .............................................................................................................. 50
4.2.2.40. AT+VER .................................................................................................................... 50
4.2.2.41. AT+H ......................................................................................................................... 50
4.2.2.42. AT+FVEW ................................................................................................................. 51
4.2.2.43. AT+FVER.................................................................................................................. 51
4.2.2.44. AT+WMAC ................................................................................................................ 51
4.2.2.45. AT+PING .................................................................................................................. 51
5. PACKAGE INFORMATION ....................................................................................................... 53
5.1 Shipping Information ............................................................................................................ 53
APPENDIX A: QUESTIONS AND ANSWERS ............................................................................... 54
Q1: How to configure transparent serial port application (TCP protocol) with two HF-
A21-SMT modules? ......................................................................................................................... 54
Q2: Where to Set HF-A21-SMT Module LAN IP and WAN IP through Web Page .................. 54
Q3: How to configure transparent serial port application (UDP protocol) with two HF-
A21-SMT modules? ......................................................................................................................... 55
Q4: Where to set HF-A21-SMT module network protocol (TCP/UDP)? ...................................... 55
Q5: How to configure transparent serial port application: Two HF-A21-SMT modules all
configured as STA and connection through AP? ........................................................................ 56
Q6: How to avoid IP address confliction when apply HF-A21-SMT module? ........................... 57
Q7: PC works as server, all HF-A21-SMT modules works as data acquisition card and
connect with PC, how to configure this application? .................................................................. 57
APPENDIX B: EVB REFERENCE DESIGN ................................................................................... 59
APPENDIX C: CONTACT INFORM ATION ..................................................................................... 60
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HF-A21-SMT Embedded WiFi Module User Manual
LIST OF FIGURES
Figure 1. HF-A21-SMT Appearance ................................................................................................... 10
Figure 2. HF-A21-SMT Pins Map ....................................................................................................... 10
Figure 3. HF-A21-SMT Mechanical Dimension .................................................................................. 12
Figure 4. HF-A21-SMT Chip Antenna Keep Out Region .................................................................... 12
Figure 5. Suggested Module Placement Region ................................................................................ 13
Figure 6. HF-A21-SMT Evaluation Kit ................................................................................................ 14
Figure 7. HF-A21-SMT Order Information .......................................................................................... 15
Figure 8. HF-A21-SMT Hardware Typical Application........................................................................ 15
Figure 9. Ethernet Reference Design with Transformer ..................................................................... 16
Figure 10. Ethernet Reference Design without Transformer ............................................................ 17
Figure 11. UART Interface Reference Design .................................................................................. 17
Figure 12. User MCU Software Flow Chart ...................................................................................... 18
Figure 13. Multi-TCP Link Data Transmition Structure ..................................................................... 19
Figure 14. HF-A21-SMT Functional Architecture .............................................................................. 21
Figure 15. HF-A21-SMT Basic Wireless Network Structure ............................................................. 21
Figure 16. HF-A21-SMT AP Network Structure ................................................................................ 22
Figure 17. HF-A21-SMT AP+STA Network Structure ....................................................................... 22
Figure 18. HF-A21-SMT Ethernet Interface Networking (As AP) ..................................................... 24
Figure 19. HF-A21-SMT Ethernet Interface Networking (As STA, N-Ver) ........................................ 25
Figure 20. HF-A21-SMT Ethernet Interface Networking (As STA, Z-Ver) ........................................ 25
Figure 21. HF-A21-SMT Transparent Transmission Demo .............................................................. 26
Figure 22. Open Web Management page ......................................................................................... 28
Figure 23. Mode Selection Page ....................................................................................................... 29
Figure 24. AP Interface Setting Page ............................................................................................... 29
Figure 25. STA Interface Setting Page ............................................................................................. 30
Figure 26. Application Setting Page .................................................................................................. 30
Figure 27. Device Management Page .............................................................................................. 31
Figure 28. STA Interface Debug Connection .................................................................................... 32
Figure 29. AP Interface Debug Connection ...................................................................................... 32
Figure 30. “CommTools” Serial Debug Tools ................................................................................... 32
Figure 31. “TCPUDPDbg” Tools Create Connection ........................................................................ 33
Figure 32. “TCPUDPDbg” Tools Setting ........................................................................................... 33
Figure 33. “TCPUDPDbg” Tools Connection .................................................................................... 34
Figure 34. Wireless Control Application ............................................................................................ 34
Figure 35. Remote Management Application .................................................................................... 35
Figure 36. Transparent Serial Port Application ................................................................................. 35
Figure 37. Wireless Data Acquisition Card Application..................................................................... 36
Figure 38. HF-A21-SMT Default UART Port Parameters ................................................................. 37
Figure 39. Switch to Configuration Mode .......................................................................................... 37
Figure 40. ”AT+H” Instruction for Help .............................................................................................. 38
Figure 41. Shipping Information ........................................................................................................ 53
Figure 42. Configure Transparent Serial Port Connection (TCP) ..................................................... 54
Figure 43. Module LAN IP Setting..................................................................................................... 55
Figure 44. Module WAN IP Setting ................................................................................................... 55
Figure 45. Configure Transparent Serial Port Connection (UDP) ..................................................... 55
Figure 46. Module Network Protocols: TCP/Server .......................................................................... 56
Figure 47. Module Network Protocol: TCP/Client ............................................................................. 56
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HF-A21-SMT Embedded WiFi Module User Manual
Figure 48. Module Network Protocol: UDP ....................................................................................... 56
Figure 49. Two HF-A21-SMT Modules Connection Through AP ...................................................... 57
Figure 50. Wireless Data Acquisition Card Setting ........................................................................... 58
LIST OF TABLES
Table 1 HF-A21-SMT Module Technical Specifications ...................................................................... 9
Table 2 HF-A21-SMT Pins Definition ................................................................................................ 10
Table 3 HF-A21-SMT Evaluation Kit Interface Description ............................................................... 14
Table 4 HF-A21-SMT Web Access Default Setting ........................................................................... 28
Table 5 Error Code DescribtionHF-A21-SMT Web Access Default Setting ...................................... 39
Table 6 AT+ Instruction Set List ........................................................................................................ 39
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HF-A21-SMT Embedded WiFi Module User Manual
HISTORY
Ed. V1.0 Created on 1-14-2015.
Ed. V1.1 Modified on 2-03-2015. Modify power consumption.
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HF-A21-SMT Embedded WiFi Module User Manual
1. PRODUCT OVERVIEW
1.1. General Specification
Table 1 HF-A21-SMT Module Technical Specifications
Class Item Parameters
Certification FCC/CE
Wireless standard 802.11 b/g/n Frequency range 2.412GHz-2.462GHz
802.11b: +20 dBm (Max.)
Transmit Power
Wireless Parameters
Receiver Sensitivity
802.11g: +18 dBm (Max.)
802.11n: +15 dBm (Max.) Configurable
802.11b: -89 dBm
802.11g: -81dBm
802.11n: -71dBm
Hardware Parameters
Software Parameters
Antenna Option
Data Interface
Operating Voltage 3.3V (+/-5%) Operating Current Avg:170mA Peak:400mA Operating Temperature Storage Temperature Dimensions and Size
Network Type STA /AP/AP+STA mode Security Mechanisms WEP/WPA-PSK/WPA2-PSK/WAPI Encryption WEP64/WEP128/TKIP/AES Work Mode Transparent Transmission Serial command AT+instruction set Network Protocol TCP/UDP/ARP/ICMP/DHCP/DNS/HTTP Max. TCP Connection 32 User Configuration
User Application SW
Internal:On-board PCB antenna
UART: 1200bps - 230400bps Ethernet: 10Mbps/100Mpbs GPIO,I2C,USB
-40- 85
-45- 125 25×40×3mm SMT
Web ServerAT command config.
Support customized application SW Provide SDK package Provide smart link tools
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HF-A21-SMT Embedded WiFi Module User Manual
1.2. Hardware Introduction
1.2.1. Pins Definition
Figure 1. HF-A21-SMT Pins Map
Table 2 HF-A21-SMT Pins Definition
Pin Description Name Direction Note 3,18,24, 26 1,2 4
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GND GND Power
VCC 3.3V Power 3.3V @ 350mA UART Data Transmit UART_TXD O
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Note1
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5
6 8
9
10
11
12
13
14
15
16
17
19 20 21 22
23
25
7
UART Data Receive UART_RXD I
GPIO GPIO_0 I/O c Ethernet Interface PHY_TX+ O Ethernet Data Interface.
Ethernet Interface PHY_TX- O
Ethernet Interface PHY_RX+ I
Ethernet Interface PHY_RX- I
USB_D+ USB_D+ I/O USB Host Port
USB_D- USB_D- I/O
WiFi status Indication nLink O “1”- WIFI connection
available, “0”- No WIFI connection
Module reset signal nRST I “Low (0)” effective reset
input. The reset duration should be
kept more than 300ms Indicate the module status of power on process
Restore configuration nReload I Module will Restore factory
I2C_SD I2C_SD I/O I2C_SCLK I2C_SCLK O UART1 Data Receive UART1_RXD I UART1 Data Transmit UART1_TXD O
GPIO GPIO_1 I/O
2.4GHz Antenna ANT O 50 Ohm resistence control Reserved NC NC
nReady O “0” or “Palmodic Signal” -
Finish module boot up process;
“1” - Module boot up not
finish.
default configuration after
set this pin “0” more than 3s,
then set “1”.
This pin must 4.7K pull-up
outside the module.
Note1
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HF-A21-SMT Embedded WiFi Module User Manual
1.2.2. Mechanical Size HF-A21-SMT modules physical size as follows:
Figure 3. HF-A21-SMT Mechanical Dimension
1.2.3. On-board Chip Antenna HF-A21-SMT module support internal ob-board chip antenna option. When costomer select
internal antenna, you shall comply with following antenna design rules and module location suggestions:
For customer PCB, RED color region (7.5x25mm) cant put componet or paste GND net; Antenna must away from metal or high components at least 10mm;
Antenna cant be shieldedby any meal enclosure; All cover, include plastic, shall away
from antenna at least 10mm;
Figure 4. HF-A21-SMT Chip Antenna Keep Out Region
High-Flying suggest HF-A21-SMT module better locate in following region at customer board, which to reduce the effect to antenna and wireless signal, and better consult High-Flying technical people when you structure your module placement and PCB layout.
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HF-A21-SMT Embedded WiFi Module User Manual
Figure 5. Suggested Module Placement Region
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HF-A21-SMT Embedded WiFi Module User Manual
1.2.4. Evaluation Kit High-Flying provides the evaluation kit to promote user to familiar the product and develop the
detailed application. The evaluation kit shown as below, user can connect to HF-A21-SMT module with the RS-232 UART port, 100M Eth port or Wireless port to configure the parameters, manage the module or do the some functional tests.
Function
External Interface
LED
Button
Figure 6. HF-A21-SMT Evaluation Kit
Table 3 HF-A21-SMT Evaluation Kit Interface Description
Name Description
DC-Jack
DC 5V 5V@1A Power input: 2-Pin COM1 UART DB9, UART, Connect PC serial port COM2 UART1 DB9, UART1, Connect PC serial port RJ-45 100M Ethernet Interface USB Host Seserved USB (Type A) DIP-16 Extended 16-pin functional interface
Power (Red) 3.3V Power Indicator nLink nLink/GPIO-Pin 14 Indicator nReady nReady/GPIO-Pin 16 Indicator Reset Reload Module restore to factory default configuration.
5V@1A Power input: DC-Jack
Used to reset the module.
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HF-A21-SMT Embedded WiFi Module User Manual
1.2.5. Order Information Base on customer detailed requirement, HF-A21-SMT series modules provide different variants
and physical type for detailed application.
Figure 7. HF-A21-SMT Order Information
1.3. Hardware Reference Design
1.3.1. Hardware Typical Application
Figure 8. HF-A21-SMT Hardware Typical Application
Notes nRST- Module hardware reset signal. Input. Logics “0” effective.
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HF-A21-SMT Embedded WiFi Module User Manual
There is 22K&4.7uF reset circuit. When module power up or some issue happened, MCU need assert nRST signal “0” at least 300ms, then set” 1” to keep module fully reset.
nReady- Module boot up ready signal. Output. Logics “0” effective. The module will output “0” “or “Palmodic Signal” after normal boot up. This signal used to judge if module finish boot up and ready for application or working at normal mode.
nLink- Module WIFI connection indication. Output. When module connect to AP (STA mode) or some WiFi STA connect to module (AP mode), the module will output “0”. This signal used to judge if module already at WiFi connection status.
nReload- Module restore to factory default configuration.Input. Logics “0” effective. User can assert nReload signal “0” more than 3‟s through button or MCU pin, then release, module will restore to factory default configuration and re-start boot up process.
UART_TXD/RXD- UART port data transmit and receive signal.
1.3.2. 10/100M Ethernet Interface
HF-A21-SMT modules provide one 10/100M Ethernet PHY layer interface for data transition or user configuration. This Ethernet support with transformer and without transformer (PHY-to-PHY) 2 kinds of connection.
1.3.2.1. Ethernet Connection with Transformer
User board put Ethernet transformer and RJ-45 connector. This is a general 10/100M Ethernet phy layer connection. The reference design as following:
Figure 9. Ethernet Reference Design with Transformer
1.3.2.2. Ethernet Connection without Transformer For this application, Ethernet will work as internal data transmition interface and save one
transformer and RJ-45 connector. Ethernet PHY-to-PHY connection will use AC coupled connection. This is a space and cost optimized solution. Hardware reference design as following: Note: VCC signal at reference design shall base on user board PHY chipset voltage level, such as 2.5V power supply for general Ethernet PHY chipset.
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Figure 10. Ethernet Reference Design without Transformer
1.3.3. UART Interface UART interface is the serial data transmition interface mainly used for HF-A21-SMT modules.
User can add RS-232 chipset on user board and convert the signal to RS-232 voltage to communicate with outside equipment or sensors. HF-A21-SMT modules UART interface include 4 general signals: TXD/RXD/RTS/CTS. The hardware reference design with RS-232 chipset as following:
Figure 11. UART Interface Reference Design
Notes: TXD pin is also hardware configuration pin internal module. So this pin MUST pull-down during module power up. HF0A11x modules provide internal pull-down resister, user cant add pull-up/pull-down resister on user board, which may cause module cant work.
1.3.4. Power Interface HF-A21-SMT module support single +3.3V power supply. The peak current shall about 350mA
and normal WiFi working current shall about 200mA. The power save (WiFi OFF) mode will about 100mA
Decoupling at power pin suggested, At least one 100uF and one 10uF capacitor required at user board and put near module power input pin will increase the reliability and performance.
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1.4. Software Reference Design
When HF-A21-SMT modules boot up phase, the general user board MCU software flow chart will as following:
Figure 12. User MCU Software Flow Chart
When HF-A21-SMT modules boot up, user can select one work mode base on the setting, and user can switch to the configuration mode at any kinds of work mode.
1.4.1. Transparent Transmission Mode HF-A21-SMT modules support serial interface transparent transmission mode. The benefit of this
mode is achieves a plug and play serial data port, and reduces user complexity furthest. In this mode, user should only configure the necessary parameters. After power on, module can automatically connect to the default wireless network and server.
As in this mode, the module's serial port always work in the transparent transmission mode, so users only need to think of it as a virtual serial cable, and send and receive data as using a simple serial. In other words, the serial cable of users original serial devices is directly replaced with the module; user devices can be easy for wireless data transmission without any changes.
The transparent transmission mode can fully compatible with user‟s original software platform and reduce the software development effort for integrate wireless data transmission.
Notes: Transparent transmission mode as a low level phy layer data transmitting can't keep zero error rates by itself. User can enable UART port‟s hardware flow control CTS/RTS function or though higher layer protocol such as TCP to lower error rate and mange the data completeness. High-Flying recommend when doing large amounts of data transmitting in transparent transmission mode, hardware flow control should be enabled, so as to fully ensure reliable data transmission. In the applications which doesnt need flow control, users can simply leave RTS / CTS pin vacant.
1.4.2. Configuration Mode In configuration mode, user can finish HF-A21-SMT module configuration management and
parameters setting work. In work mode (Transparent Transmission), user can switch to the
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configuration mode through AT+instruction, detailed switch operation refer to “AT+ instruction set” chapter.
1.4.3. Multi-TCP Link Connection When HF-A21-SMT module configured as TCP Server, it supports Multi-TCP link connection, and
maximum 32 TCP clients permit to connect to HF-A21-SMT module. User can realize multi-TCP link connection at each work mode.
Multi-TCP link connection will work as following structure: Upstream: All dates from different TCP connection or client will be transmitted to the serial port as
a sequence.
Downstream: All data from serial port (user) will be duplicate and broadcast to every TCP
connection or client.
Detailed multi-TCP link data transmition structure as following figure:
Figure 13. Multi-TCP Link Data Transmition Structure
1.4.4. TCPB Function HF-A21-SMT support 2xTCP function, which means module can support 2 network connections
at the same time. The 2nd net work connection called TCPB. TCPB only works as TCP Client and its configuration can only through AT commanrd, not Web configuration supported. The command as following,
AT+TCPB=on, Enable TCPB function; AT+TCPPTB=<port>, Set TCPB port number; AT+TCPADDB=<IP or domain>, Set TCPBs server address; AT+TCPTOB=<time>, Set TCPB timeout; AT+TCPLKB, Query TCPB link status;
Detailed command describtion refer ro AT instruction chapter. After enable TCPB function, two network interfaces work mode like “Multi-TCP Link”, All dates from each TCP connection will be transmitted to the serial port as a sequence and all data from serial port (user) will be duplicate and broadcast to each TCP connection.
1.4.5. Palmodic Signal Base on selected factory default setting, nReady signal can have two output statuses:
Status One: The module will output “0” after normal boot up. This signal used to judge if
module finish boot up and ready for application.
Status Two: The module will output “Palmodic Signal” after normal boot up.The
palmodic signal is 0.5Hz square wave with dutyfactor 1:1. User can query this signal to judge if moduleis active “live” or need to re-boot. When module switches to command mode, it will output “0”, which used to distinguish work mode and command mode.
Notes:
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This function is user selected factory setting and RELD instruction will not effective for this function. If user not requires this function, the default factory setting is Status One. Contact with Hi-flying for more detailed support.
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2. FUNCTIONAL DESCRIPTION
2.1. Wireless Networking
HF-A21-SMT module can be configured as both wireless STA and AP base on network type. Logically there are two interfaces in HF-A21-SMT. One is for STA, and another is for AP. When HF-A21-SMT works as AP, other STA equipments are able to connect to wireless LAN via HF­A21-SMT module. Wireless Networking with HF-A21-SMT is very flexible. Following figure shows the functional architecture of HF-A21-SMT module:
Figure 14. HF-A21-SMT Functional Architecture
Notes: AP: that is the wireless Access Point, the founder of a wireless network and the centre of the
network nodes. The wireless router we use at home or in office may be an AP. STA: short for Station, each terminal connects to a wireless network (such as laptops, PDA and other networking devices) can be called with a STA device.
2.1.1. Basic Wireless Network Based On AP (Infrastructure) Infrastructure: it‟s also called basic network. It built by AP and many STAs which join in.
The characters of network of this type are that AP is the centre, and all communication between STAs is transmitted through the AP. The figure following shows such type of networking.
Figure 15. HF-A21-SMT Basic Wireless Network Structure
2.1.2. Wireless Network Based On AP Network
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As showing in the figure below, HF-A21-SMT (1) can be treat as an AP, and HF-A21-SMT (2), HF-A21-SMT (3) and the laptop are STAs connected to HF-A21-SMT (1). Meanwhile, all HF-A21­SMT modules can connected to user device via UART interface. All HF-A21-SMT modules can be operated and managed through the laptop. So it is convenient to O&M all HF-A21-SMT modules. Moreover, in such AP network structure, the whole coverage of a wireless network can be extended easily.
Figure 16. HF-A21-SMT AP Network Structure
2.1.3. Wireless Network Based On AP+STA HF-A21-SMT module support AP+STA network mode, means module support one AP interface
and one STA interface at the same time, as following figure,
Figure 17. HF-A21-SMT AP+STA Network Structure
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When module enables AP+STA function, Module‟s STA interface can connect with router and connect to TCP server in the network. At the same time, modules AP interface is also active and permit phone/PAD to connect through TCPB, then phone/PAD can control user device and and setting the module parameters, The advantage of AP+STA mode is:
Users can easily setting and track user device through Phone/PAD and not change the
orginal network setting.
Users can easily setting module‟s parameters through WiFi when module works as STA
mode.
AP+STA Mode Setting:
AP+STA mode need serial AT command to enable as follows:
AT+FAPSTA=on, Enable AP+STA mode; Then, when you configure module works as STA mode, its AP interface still active;
AP+STA Mode Notes:
When user enable AP+STA function, the STA port need to keep connected with other router (AP), or STA port will have to scan the AP frequently, which will affect AP port function and may cause some data loss. So,if user confirm STA port cant connect with AP at some time, user can disable the STA scan through the following command:
AT+STTC=on/offon: Scan AP; off: No scan AP.
After re-start module, this command not saved;
AT+FSTTC=on/off;
This command is saved after re-starting the module;
2.2. Auto- Frequency Function
When module works as STA, HF-A21-SMT will adjust its wireless channel to keep the same channel with associated AP and connect in. When module works as AP and HF-A21-SMT enable Auto-frequency function, then when module boot up, it will select the best wireless channel based on surrounding environment.
2.3. Security
HF-A21-SMT module supports multiple wireless encryption mechanisms, and enables to protect the security of user‟s data transmission, the mechanisms include:
WEP WPA-PSK/TKIP WPA-PSK/AES WPA2-PSK/TKIP WPA2-PSK/AES
2.4. UART Frame Scheme
2.4.1. UART Free-Frame
HF-A21-SMT support UART free-frame function. If user select open this function, module will check the intervals between any two bytes when reciving UART data. If this interval time exceeds defined value (50ms default), HF-A21-SMT will think it as the end of one frame and transfer this free-frame to WiFi port, or HF-A21-SMT will receive UART data untill 4K bytes, then transfer 4KB frame to WiFi port.
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HF-A21-SMTs default interval time is 50ms. User can also set this interval to fast (10ms) through AT command. But user have to consider if user MCU can send UART data with 10ms interval ,or the UART data may be divide as fragment. Through AT command: AT+FUARTTE=fash/normal, user can set the interval time: fast (10ms) and normal (50ms). This command is factory default setting command and AT+RELD cant change its value.
2.4.2. UART Auto-Frame HF-A21-SMT support UART auto-frame function. If user select open this function and setting
auto-frame trigger length and auto-frame trigger time parameters, then module will auto framing the data which received from UART port and transmitting to the network as pre-defined data structure.
Auto-frame trigger length: The fixed data length that module used to transmitting to
the network.
Auto-frame trigger time: After the trigger time, if UART port received data cant reach
auto-frame trigger length, then module will transmitting available data to the network and bypass the auto-frame trigger length condition.
Detailed UART auto-frame function can refer to AT+ instruction set “UARTF/UARTFT/UARTFL” introduction.
2.5. Address Binding
HF-A21-SMT module supports the feature of binding the BSSID address of target network. According to the provisions of 802.11 protocol, different wireless networks can have a same network name (i.e. SSID / ESSID), but must correspond to a unique BSSID address (i.e. MAC address). Illegal intruders can create a wireless network with the same SSID / ESSID, it will make STAs in the network to join to the illegal AP, thereby and then network leakage happen.
Users can prevent STA from joining to illegal network by binding the BSSID address, to improve wireless network security.
2.6. Ethernet Interface Communication
HF-A21-SMT module provides one 10/100M Ethernet interface. With this Ethernet interface, user can easily realize the three interface (WiFi, UART, and Ethernet) intercommunication and networking. HF-A21-SMT module can configured as Bridge Mode or Router Mode base on different networking technology.
Notes: The Ethenet function is disabled by default because of the large power consumption. Users may input “AT+FEPHY=on” and reset to enable Ethenet. HF-A21-SMT need different configuration to support different Ethenet Networking mode (Such as “N-Ver” and “Z-Ver” as following, which need AT+FVER=n to switch to N-Ver or AT+FVER=z to switch to Z-Ver).
2.6.1. HF-A21-SMT Ethernet Interface Networking (As AP)
Figure 18. HF-A21-SMT Ethernet Interface Networking (As AP)
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For above networking, HF-A21-SMT module works as AP and also the centre of this network. All devices IP address in this network shall use the same network segment with HF-A21-SMT and they can intercommunication with this method.
2.6.2. HF-A21-SMT Ethernet Interface Networking (As STA, N-Ver)
Figure 19. HF-A21-SMT Ethernet Interface Networking (As STA, N-Ver)
For above networking, HF-A21-SMT module works as STAFirmware is N-Version,and module configured as router mode. When module connect to AP, it will get wireless port IP address from APFor example: 192.168.1.100.At the same time, module also form a subnet Default 10.10.100.254and all devices connected to module Ethernet interface will get assigned IP addressFor example: 10.10.100.101.So for above networking, PC1 at internal subnet can initiate a connection to PC2 (For HF-A21-SMT works as router mode), but PC2 can‟t active initiate a connection to PC1.
2.6.3. HF-A21-SMT Ethernet Interface Networking (As STA, Z-Ver)
Figure 20. HF-A21-SMT Ethernet Interface Networking (As STA, Z-Ver)
For above networking, HF-A21-SMT module works as STAFirmware is Z-Version,and module configured as bridge mode. When module connect to AP, all devices connected to module Ethernet interface will get assigned IP address from AP (For example:
192.168.1.101).For module works as bridge mode, it can be treated as a transparent device and PC1, PC2 can communicate without any limit. But in this networking, HF-A21-SMT module needs assign a static LAN IP address (For example: 192.168.1.10) if module also needs communication with AP or configuration through web page.
2.7. Search Function for STA
When using web configuration STA Interface Setting Page, user can push “Search” button to find surrounding AP, and find a AP to associated.
2.8. Work Mode
HF-A21-SMT modules provide two kinds of work mode: Transparent transmission mode. Transparent transmission mode achieves a plug and play serial data port, and reduces user
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complexity. User can save the configuration information to the flash of HF-A21-SMT, then module will go into the appointed work mode after power up.
For a module which already finished parameters setting, it will try to connect a wireless network and server with these parameters after power up, and serial interface is also active with pre­configured parameters. Then all the data is transferred directly between serial interface and Wifi interface without any interpreted.
The parameters which need to configure include:
Wireless Network Parameters
Wireless Network NameSSID Security Mode Encryption Key
TCP/UDP Linking Parameters
Protocol Type Link TypeServer or Client Target Port ID Number Target Port IP Address
Serial Port Parameters
Baud Rate Data Bit Parity (Check) Bit Stop Bit Hardware Flow Control
Work Mode Selection
Transparent transmission
Transparent transmission demo as showing in the following figure, a HF-A21-SMT module can be taken as a virtual serial line when UART interface working in transparent transmission mode. And user device will realize wireless data transmition almost without any changes.
Figure 21. HF-A21-SMT Transparent Transmission Demo
2.9. Network Protocol
HF-A21-SMT module supports TCP/UDP network protocol and the port parameters can be set via web accessing or AT+instruction set.
2.10. Parameters Configuration
HF-A21-SMT module supports two methods to configuration parameters: Web Accessing and AT+instruction set.
Web accessing means users can configure parameters through Web browser. When HF-A21­SMT module connected to wireless network, parameters configuration is done on a PC
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connected to the same wireless network. AT+instruction set configuration means user configure parameters through serial interface command. Refer to “AT+instruction set” chapter for more detail.
Notes:
High-Flying can customized the parameters setting as customer request and ship HF-A21-SMT modules with these parameters as factory default configuration. It will reduce user‟s module configuration time for mass production. Also, if user need different parameters setting for every module, High-Flying can provide the auto-configuration tool to speed up the module conguration duration. Please contact High-Flying technical interface to acquire this tool if required.
2.11. Firmware Upgrade
HF-A21-SMT module supports firmware upgrade online; User can upgrade firmware via web access.
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3. OPERATION GUIDELINE
3.1. Configuration via Web Accessing
When first use HF-A21-SMT modules, user may need some configuration. User can connect to HF-A21-SMT modules wireless interface with following default setting information and configure the module through laptop.
Table 4 HF-A21-SMT Web Access Default Setting
Parameters Default Setting
SSID HF-A21x_AP
IP Address 10.10.100.254
Subnet Mask
User Name
Password admin
3.1.1. Open Web Management Interface Step 1: Connect laptop to SSID “HF-A21x_AP” of HF-A21-SMT module via wireless LAN card;
Step 2: After wireless connection OK. Open Wen browser and access “http://10.10.100.254”; Step 3: Then input user name and password in the page as following and click “OK” button.
255.255.255.0
admin
Figure 22. Open Web Management page
The HF-A21-SMT web management page support English and Chinese language. User can select language environment at the top right corner and click “Apply” button.
The main menu include five pages: “Mode Selection”,” AP Interface Setting”,”STA Interface Setting”,”Application Setting”, and “Device Management”
Notes:
Default, High-Flying suggests all Web management related operation shall execute at AP mode. (Even you need configure STA parameters and want module works as STA mode). If user selects STA mode and still want to configurate the module through Web browser, you have to access the module through another AP (and get the module IP address through this AP.)
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3.1.2. Mode Selection Page This page use to setting the module working mode (Transparent Transmission) and wireless
networking mode (AP and STA mode).
Figure 23. Mode Selection Page
3.1.3. AP Interface Setting Page This page use to setting the parameters when HF-A21-SMT module works as AP.
Figure 24. AP Interface Setting Page
3.1.4. STA Interface Setting Page This page use to setting the parameters when HF-A21-SMT module works as STA.
Such as SSID of AP which module need to connected, and also select the networking type: DHCP or static IP address.
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Figure 25. STA Interface Setting Page
3.1.5. Application Setting Page This page use to setting the parameters of serial port communication, such as UART setting and
high layer network protocol setting which used support serial communication.
Figure 26. Application Setting Page
Notes:
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Generally, Network protocols support three modes: TCP Server, TCP Client, and UDP. UDP has no server and client requirement according to standard.
Besides module working as TCP Server (IP address not required in this mode). User must set the IP address of the device which need communicate with HF-A21-SMT module.
Also the Port ID between two sides of the communication devices must keep the same.
3.1.6. Device Management Page This page use to manage HF-A21-SMT module general setting, such as administrator setting,
restart module button, restore factory default setting button, and update firmware through webpage.
Figure 27. Device Management Page
Notes:
Restart module button: When you setting the parameters of different web pages, you will click “Apply” button to confirm the setting, but the setting take effect only after user click the “Restart” button here, the module will re-boot up and reflash the memory information with new changes.
3.2. HF-A21-SMT Usage Introduction
3.2.1. Software Debug Tools High-Flying use two common software tools debugging and applying HF-A21-SMT modules.
(User can also select other tools used to debug serial and Ethernet port).
Serial Debugging Software: ComTools
Ethernet Debugging Software: TCPUDPDbg
3.2.2. Network Connection User can select two methods to connect HF-A21-SMT module base on dedicated application.
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Use HF-A21-SMT STA interface
HF-A21-SMT and debug PC2 connect to a wireless AP, another PC1 (or user device) connect to HF-A21-SMT module with serial port:
Figure 28. STA Interface Debug Connection
Use HF-A21-SMT AP interface
Debug PC2 connect to HF-A21-SMT through wireless connection, another PC1 (or user device) connect to HF-A21-SMT module with serial port.
Figure 29. AP Interface Debug Connection
3.2.3. Module Debug PC1 open “CommTools” program, setting the same serial port parameters with HF-A21-SMT
module and open serial port connection.
Figure 30. “CommTools” Serial Debug Tools
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PC2 open “TCPUDPDbg” program, and create a new connection. If HF-A21-SMT configured as Server mode, “TCPUDPDbg” Tools shall create “Client “mode connection. Or otherwise, create a “Server” mode connection.
Figure 31. “TCPUDPDbg” Tools Create Connection
Then setting the TCP/UDP connection parameters. Default as following:
Figure 32. “TCPUDPDbg” Tools Setting
Then, click “Create” button to create a connection.
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Figure 33. “TCPUDPDbg” Tools Connection
Now, in transparent transmission mode (HF-A21-SMT default setting), data can be transferred from “CommTools” program to “TCPUDPDbg” program, or in reverse. You can see data in receiver side will keep same as in sender side.
3.3. Typical Application Examples
3.3.1. Wireless Control Application
Figure 34. Wireless Control Application
For this wireless control application, HF-A21-SMT works as AP mode. Modules serial port connects to user device. So, control agent (Smart phone for this example) can manage and control the user device through the wireless connection with HF-A21-SMT module.
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3.3.2. Remote Management Application
Figure 35. Remote Management Application
For this remote management application, HF-A21-SMT works as STA mode and connects to Internet through wireless AP. Module configured as TCP Client and communicates with remote TCP server at Internet. Module‟s serial port connects to user device.
So, user devices data or sampling information can send to remote TCP server for storage or processing. Also remote TCP server can send command to control and manage the user device through the wireless network.
3.3.3. Transparent Serial Port Application For this transparent serial port application, two HF-A21-SMT modules connect as below figures to
build up a transparent serial port connection.
Figure 36. Transparent Serial Port Application
For left side HF-A21-SMT module, configured as AP mode and use default SSID and IP address, network protocol configured as TCP/Server mode, and protocol port ID: 8899.
For right side HF-A21-SMT module, configured as STA mode and setting the same SSID ”HF­A11x_AP” for this examplewith left side HF-A21-SMT module, enable DHCP network and network protocol configured as TCP/Client mode, protocol port ID: 8899. Target IP address part
setting the same IP address with left side HF-A21-SMT module (“10.10.100.254” for this example).
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When right side HF-A21-SMT boot up, it will find wireless AP (SSIDHF-A11x_AP for this example) and open TCP/Client network protocol to connect with left side module‟s TCP/Server. All these operation will be automatic and after finished, the two user devices connected to HF­A21-SMT module through serial port can communicate each other and think the connection between them is fully transparent.
3.3.4. Wireless Data Acquisition Card Application For this wireless data acquisition card application, one PC works as data server and every data
acquisition card connects with a HF-A21-SMT module to support wireless connection function.
Figure 37. Wireless Data Acquisition Card Application
As above figure, one HF-A21-SMT configured as AP mode and all others configured as STA mode. All HF-A21-SMT which configured as STA and data server PC wireless connected to HF­A21-SMT which configured as AP to make up a wires network.
Data server PC open TCP/Server protocol and all HF-A21-SMT modules open TCP/Client protocol. All data acquisition cards data and sampling information can be transmitted to data server PC for operation.
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4. AT+INSTRUCTION INTRODUCTION
4.1. Configuration Mode
When HF-A21-SMT power up, it will default works as transparent transmission mode, then user can switch to configuration mode by serial port command. HF-A21-SMT UART default parameters setting as below figure,
Figure 38. HF-A21-SMT Default UART Port Parameters
In configuration mode, user can setting the module through AT+ instruction set, which cover all web page setting function.
4.1.1. Switch to Configuration Mode Two steps to finish switching from transparent transmission mode to configuration mode.
UART input “+++”, after module receive “+++”, and feedback “a” as confirmation. UART input “a”, after module receive “a” and feedback “+ok” to go into AT+
instruction set configuration mode.
Figure 39. Switch to Configuration Mode
Notes:
1. When user input “+++” (No “Enter” key required), the UART port will display feedback information “a”, and not display input information”+++” as above UART display.
2. Any other input or wrong step to UART port will cause the module still works as original mode
(transparent transmission).
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4.2. AT+ Instruction Set Overview
User can input AT+ Instruction through hyper terminal or other serial debug terminal, also can program the AT+ Instruction to script. User can also input “AT+H” to list all AT+ Instruction and description to start.
Figure 40. ”AT+H” Instruction for Help
4.2.1. Instruction Syntax Format
AT+Instruction protocol is based on the instruction of ASCII command style, the description of syntax format as follow.
Format Description
< >: Means the parts must be included [ ]: Means the optional part
Command Message
AT+<CMD>[op][para-1,para-2,para-3,para-4…]<CR>
AT+: Prefix of command message; CMD: Command string; [op]: Symbol of command operator,
“=” : The command requires parameters input; “NULL”: Query the current command parameters setting;
[para-n]: Parameters input for setting if required; <CR>”Enter” Key, its 0x0a or 0x0d in ASCII;
Notes: When input AT+Instruction, “AT+<CMD>” character will display capital letter automatic and other parts will not change as you input.
Response Message
+<RSP>[op] [para-1,para-2,para-3,para-4…]<CR><LF><CR><LF>
+: Prefix of response message; RSP: Response string;
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“ok” : Success
“ERR”: Failure [op] : = [para-n]: Parameters if query command or Error code when error happened; <CR>: ASCII 0x0d; <LF>: ASCIII 0x0a;
Error Code
Table 5 Error Code DescribtionHF-A21-SMT Web Access Default Setting
Error Code Description
-1 Invalid Command Format
-2 Invalid Command
-3 Invalid Operation Symbol
-4 Invalid Parameter
-5 Operation Not Permitted
4.2.2. AT+ Instruction Set
Table 6 AT+ Instruction Set List
Instruction Description
<null> NULL E Open/Close show back function ENTM Set module into transparent transmition mode NETP Set/Query network protocol parameters UART Set/Query serial port parameters UARTF Open/Close UART auto-frame function UARTFT Set/Query UART auto-frame trigger time UARTFL Set/Query UART auto-frame trigger length TMODE Set/Query data transmition mode
(transparent transmition) WMODE Set/Query WIFI work mode (AP or STA) WSKEY Set/Query WIFI security parameters as STA WSSSID Set/Query WIFI target AP SSID parameters as STA WSLK Query WiFi link status as STA WEBU Set/Query WEB page login parameters
(User Name and Password) WAP Set/Query WIFI parameters as AP WAKEY Set/Query WIFI security parameters as AP HIDESSID Set/Query hide APs SSID MSLP Set modules into power save mode.(Turn OFF WiFi) WSCAN Seek AP when module works as STA mode TCPLK Query if TCP link already build-up TCPDIS Open/Cose TCP (Only TCP Client available) WANN Set/Query WAN setting, only effective as STA mode LANN Set/Query LAN setting, only effective as AP mode DHCPDEN Enable/Disable LAN DHCP server function DHCPGW Set/Query DHCP gateway address
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TCPTO
Set/Query TCP timeout
MAXSK
Set/Query maxima TCP connection
TCPB
Open/Close TCPB function
TCPPTB
Set/Query TCPB port number
TCPADDB
Set/Query TCPB server address
TCPTOB
Set/Query TCPB time out time
TCPLKB
Query TCPB link status
EPHY
Open/Close ETH interface
STTC
Enable/Disable STA port scan function
DOMAIN
Set/Query domain ofmodule webpage
FRLDEN
Enable/Disable nReload pin function
RELD
Restore to factory default setting
Z
Re-start module
MID
Query module ID information
WRMID
Set module ID
VER
Query module software version information
H
Help
FVEW
Enable/Disable WANN mode
FVER
Set/Query working mode
WMAC
Set/Query AP MAC address
PING
PING command
Notes: HF-A21-SMT module can works as AP or STA, user have to use different AT+ Instruction to set WiFi parameters when module works as AP or STA mode.
4.2.2.1. AT+E
Function: Open/Close show back function; Format:
AT+E<CR>
+ok<CR>< LF ><CR>< LF >
When HF-A21-SMT module firstly switch from transparent transmission to configuration mode, show back status is open, input “AT+E” to close show back function, input“AT+E” again to open show back function.
4.2.2.2. AT+ENTM
Function: Set module into transparent transmition mode; Format:
AT+ENTM<CR> +ok<CR>< LF ><CR>< LF >
When operate this command, module switch from configuration mode to transparent transmission mode.
4.2.2.3. AT+NETP
Function: Set/Query network protocol parameters; Format:
Query Operation
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AT+NETP<CR> +ok=<protocol,CS,port,IP><CR>< LF ><CR>< LF >
Set Operation
AT+NETP=<protocol,CS,port,IP><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
protocol:
TCP UDP
CS: Network mode:
SERVER
CLIENT Port: protocol port ID: Decimal digit and less than 65535 IP: Server‟s IP address when module set as client
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.4. AT+UART
Function: Set/Query serial port parameters; Format:
Query Operation
AT+UART<CR>
+ok=<baudrate,data_bits,stop_bit,parity,flowctrl><CR>< LF ><CR>< LF >
Set Operation
AT+UART=<baudrate,data_bits,stop_bit,parity><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
baudrate:
1200,1800,2400,4800,9600,19200,38400,57600,115200,230400 data_bits:
5,6,7,8 stop_bits:
1,2 parity:
NONE,EVEN,ODD,MARK,SPACE flowctrlhardware flow control (CTSRTS)
NFC: No flow control
FC: flow control
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.5. AT+ UARTF
Function: Open/Close UART auto-frame function; Format:
Query Operation
AT+ UARTF<CR> +ok=<para><CR>< LF ><CR>< LF >
Set Operation
AT+ UARTF=<para ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
para:
disable - Close auto-frame function;
enable - Open auto-frame function;
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4.2.2.6. AT+ UARTFT
Function: Set/Query UART auto-frame trigger time; Format:
Query Operation
AT+ UARTFT<CR> +ok=<time><CR>< LF ><CR>< LF >
Set Operation
AT+ UARTFT=<time ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
time: Range 100 ~10000; Unit: ms. Auto-frame trigger time
4.2.2.7. AT+ UARTFL
Function: Set/Query UART auto-frame trigger length; Format:
Query Operation
AT+ UARTFL<CR> +ok=<len><CR>< LF ><CR>< LF >
Set Operation
AT+ UARTFL=<len ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
len: Range 64 ~4096; Unit: byte. Auto-frame trigger length;
4.2.2.8. AT+TMODE
Function: Set/Query data transmition mode; Format:
Query Operation
AT+TMODE<CR>
+ok=<tmode><CR>< LF ><CR>< LF >
Set Operation
AT+ TMODE=<tmode><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
tmode: Data transmition mode
Through: Transparent transmition
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.9. AT+WMODE
Function: Set/Query WIFI work mode; Format:
Query Operation
AT+WMODE<CR> +ok=<mode><CR>< LF ><CR>< LF >
Set Operation
AT+ WMODE=<mode><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
mode:WIFI work mode
AP
STA
After HF-A21-SMT module boots up again, the setting will be effective.
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4.2.2.10. AT+WSKEY
Function: Set/Query WIFI security parameters as STA; Format:
Query Operation
AT+WSKEY<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >
Set Operation
AT+ WSKEY=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
auth: Authentication mode
OPEN
SHARED
WPAPSK encry:Encryption algorithm
NONE: When “auth=OPEN”, effective
WEP: When “auth=OPEN” or “SHARED”, effective
TKIP: When ”auth= WPAPSK”, effective
AES: When “auth= WPAPSK”, effective key: password, ASCII code, shall less than 64 bit and greater than 8bit
This Instruction only effective for HF-A21-SMT works as STA. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as AP.
4.2.2.11. AT+WSSSID
Function: Set/Query WIFI target AP SSID parameters as STA. Format:
Query Operation
AT+WSSSID<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >
Set Operation
AT+ WSSSID=<ap’s ssid ><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
aps ssid: APs SSID
This Instruction only effective for HF-A21-SMT works as STA. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as AP.
4.2.2.12. AT+ WSLK
Function: Query WiFi link status as STA Format:
Query Operation
AT+ WSLK<CR> +ok=<ret><CR>< LF ><CR>< LF >
Parameters:
ret
”Disconnected”, if no WiFi connection;
”APSSIDAPs MAC” , if WiFi connection available;
”RF Off”, if WiFi OFF;
This Instruction only effective for HF-A21-SMT works as STA. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as AP.
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4.2.2.13. AT+WEBU
Function: Set/Query WEB page login parameters; Format:
Query Operation
AT+WEBU<CR> +ok=<usr,password><CR>< LF ><CR>< LF >
Set Operation
AT+ WEBU=< usr,password ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
usr: User name for WEB page access; passwordPassword for WEB page access;
4.2.2.14. AT+WAP
Function: Set/Query WIFI parameters as AP; Format:
Query Operation
AT+WAP<CR> +ok=<wifi_mode,ssid,channel><CR>< LF ><CR>< LF >
Set Operation
AT+ WAP=<wifi_mode,ssid,channel><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
wifi_mode: WiFi protocols
11BG
11B
11G
11BGN
11N ssid: SSID when module works as AP; channel: WIFI channel selection
AUTO
CH1~CH11
This Instruction only effective for HF-A21-SMT works as AP. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as STA.
4.2.2.15. AT+WAKEY
Function: Set/Query WIFI security parameters as AP; Format:
Query Operation
AT+WAKEY<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >
Set Operation
AT+ WAKEY=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
auth: Authentication mode
OPEN
SHARED
WPAPSK encry:Encryption algorithm
NONE: When “auth=OPEN”, effective;
WEP: When “auth=OPEN”, effective or “SHARED”, effective;
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TKIP: When “auth=WPAPSK”, effective;
AES:When “auth=WPAPSK”, effective;
TKIPAES:When “auth=WPAPSK”, effective; key: password, ASCII code, shall less than 64 bit and greater than 8bit;
This Instruction only effective for HF-A21-SMT works as AP. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as STA.
4.2.2.16. AT+HIDESSID
Function: Set/Query hide APs SSID; Format:
Query Operation
AT+ HIDESSID <CR> +ok=<sta.><CR>< LF ><CR>< LF >
Set Operation
AT+ HIDESSID=<sta><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
When Query,sta reply if module‟s SSID is hide;
On – not hide SSID;
Off - hide SSID; When Set,
Off - hide SSID;
On - not hide SSID;
4.2.2.17. AT+MSLP
Function: Set modules into power save mode.(Turn OFF WiFi); Format:
Query Operation
AT+ MSLP <CR> +ok=<sta.><CR>< LF ><CR>< LF >
Set Operation
AT+ MSLP=<on/off><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
When Query,sta reply if the module in sleep mode;
On - Module not in sleep mode (WiFi ON);
Off - Module in sleep mode(WiFi OFF); When Set,
Off - Set module to sleep mode (WiFi OFF);
On - Set module to normal mode (WiFi ON);
When module go into sleep mode, user can input “AT+MSLP=on” to re-start the module and module go into transparent transmission mode.
4.2.2.18. AT+WSCAN
Function: Seek AP when module works as STA mode; Format:
AT+ WSCAN<CR> +ok=<ap_site><CR>< LF ><CR>< LF >
Parameters:
ap_site: AP searched;
4.2.2.19. AT+ TCPLK
Function: Query if TCP link already build-up; Format:
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AT+ TCPLK<CR> +ok=<sta><CR>< LF ><CR>< LF >
Parameters:
sta.: if module already setup TCP link;
on: TCP link setup;
off: TCP link not setup;
4.2.2.20. AT + TCPDIS
Function: Open/Cose TCP (Only TCP Client available); Format:
Query Operation
AT+TCPDIS<CR> +ok=<sta><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPDIS=<on/off><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
sta.: set/qurey TCP link status;
on: TCP link availabe; When setting “on”, module will connect to TCP
server right away.
off: TCP link not availabe; when setting “off”, module will disconnect with
TCP server and not connect again.
4.2.2.21. AT+ WANN
Function: Set/Query WAN setting, only effective as STA mode; Format:
Query Operation
AT+WANN<CR> +ok=<mode,address,mask,gateway><CR>< LF ><CR>< LF >
Set Operation
AT+ WANN=< mode,address,mask,gateway ><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
mode: IP setting for WAN port
static: Static IP
DHCP: Dynamic IP address: WAN port IP address; mask: WAN port subnet mask; gateway: WAN port gateway address;
This Instruction only effective for HF-A21-SMT works as STA. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as AP.
4.2.2.22. AT+ LANN
Function: Set/Query LAN setting, only effective as AP mode; Format:
Query Operation
AT+LANN<CR>
+ok=<address,mask ><CR>< LF ><CR>< LF >
Set Operation
AT+ LANN=<address,mask ><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
address: LAN port IP address; mask: LAN port subnet mask;
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This Instruction only effective for HF-A21-SMT works as AP. After HF-A21-SMT module boots up again, the setting will be effective. But user can set this command when module configured as STA.
4.2.2.23. AT + DHCPDEN
Function: Enable/Disable LAN DHCP server function; Format:
Query Operation
AT+DHCPDEN<CR> +ok=<sta><CR>< LF ><CR>< LF >
Set Operation
AT+ DHCPDEN=<sat><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
sta. if Enable/Disable LAN DHCP server function;
on: Enable LAN DHCP server function.
off: Disable LAN DHCP server function.
4.2.2.24. AT+ DHCPGW
Function: Set/Query DHCP gateway address; Format:
Query Operation
AT+ DHCPGW<CR> +ok=<address><CR>< LF ><CR>< LF >
Set Operation
AT+ DHCPGW=<address ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
address: DHCP gate address;
4.2.2.25. AT+ TCPTO
Function: Set/Query TCP timeout; Format:
Query Operation
AT+ TCPTO<CR> +ok=<time><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPTO=<time ><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
time: TCP timeout time.
<= 600, (600s);
>=0, (0 means no timeout);
Default, 300s;
4.2.2.26. AT+ MAXSK
Function: Set/Query maxima TCP connection; Format:
Query Operation
AT+ MAXSK<CR> +ok=<num><CR>< LF ><CR>< LF >
Set Operation
AT+ MAXSK =<num ><CR> +ok<CR>< LF ><CR>< LF >
Parameters:
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num: 1~32, default 32. maxima TCP connection;
When configure as TCP/Server, HF-A21-SMT support maxime 32 TCP connections. If not require so much connection, user can resetting this parameters.
4.2.2.27. AT+TCPB
Function: Open/Close TCPB function; Format:
Query Operation
AT+TCPB<CR> +ok=<sta><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPB=<on/off><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
sta: TCPB enable status
on, TCPB enable
off, TCPB disable
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.28. AT+TCPPTB
Function: Set/Query TCPB port number; Format:
Query Operation
AT+TCPPTB<CR> +ok=<port><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPB=<port><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
port: decimal ,<65535
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.29. AT+TCPADDB
Function: Set/Query TCPB server address; Format:
Query Operation
AT+TCPADDB<CR> +ok=<add><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPADDB=<add><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
add: TCPB server address, can be IP address or url.
After HF-A21-SMT module boots up again, the setting will be effective
4.2.2.30. AT+TCPTOB
Function: Set/Query TCPB time out time; Format:
Query Operation
AT+TCPTOB<CR> +ok=<time><CR>< LF ><CR>< LF >
Set Operation
AT+ TCPTOB=<time><CR>
+ok<CR>< LF ><CR>< LF >
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Parameters:
time: TCPB time out time, <=600 (600s), >=0 (No time out), default 300
After HF-A21-SMT module boots up again, the setting will be effective.
4.2.2.31. AT+TCPLKB
Function: Query TCPB link status; Format:
AT+TCPCKB<CR> +ok=<sta><CR>< LF ><CR>< LF >
Parameters:
sta: TCPB link status
on, TCPB link OK
off, TCPB link not availabe
4.2.2.32. AT+EPHY
Function: Enable ETH interface; Format:
Set Operation
AT+ EPHY=<CR> +ok<CR>< LF ><CR>< LF >
Ethenet port function is disabled bydefault. Input this command to enable Ethenet. This command is not saved, this means after the module reset, Ethenet is disabled by default. Input “AT+FEPHY=on” to enable Ethenet forever..
4.2.2.33. AT+STTC
Function: Enable/Disable STA port scan function; Format:
Query Operation
AT+ STTC<CR> +ok=<sta><CR>< LF ><CR>< LF >
Set Operation
AT+ STTC=<on/off><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
sta: when query, this value feedback
On: Enable STA port scan function;
Off: Disable STA port scan function;
4.2.2.34. AT+DOMAIN
Function: Set/Query domain ofmodule webpage; Format:
Query Operation
AT+ DOMAIN<CR> +ok=<domain><CR>< LF ><CR>< LF >
Set Operation
AT+ DOMAIN=<domain><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
domain: domain to acess to module webpage.
4.2.2.35. AT+FRLDEN
Function: Enable/Disable nReload pin function; Format:
Query Operation
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AT+ FRLDEN<CR> +ok=< on/off ><CR>< LF ><CR>< LF >
Set Operation
AT+ FRLDEN=<on/off><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
on/off: Enable or Disable nReload pin function.
On, enable nReload pin function;
Off, disable nReload pin function;
Notes: AT+FRLDEN is F-Setting, means restore to factory setting will not affect this command.
4.2.2.36. AT+RELD
Function: Restore to factory default setting; Format:
AT+ RELD<CR>
+ok=rebooting…<CR>< LF ><CR>< LF >
This command restores the module to factory default setting, and then re-starts the module.
4.2.2.37. AT+Z
Function: Re-start module; Format:
AT+ Z<CR>
4.2.2.38. AT+MID
Function: Query module ID information; Format:
Query Operation
AT+MID<CR>
+ok=<module_id><CR><LF><CR><LF>
Parameters:
module_id: Module ID information;
4.2.2.39. AT+WRMID
Function: Set module ID information; Format:
Set Operation
AT+WRMID=<module_id><CR>
+ok<CR><LF><CR><LF>
Parameters:
module_id: Module ID information;
4.2.2.40. AT+VER
Function: Query module software version information; Format:
Query Operation
AT+VER<CR>
+ok=<ver><CR><LF><CR><LF>
Parameters:
ver: Module software version information;
4.2.2.41. AT+H
Function: Help; Format:
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Query Operation
AT+H<CR> +ok=<commod help><CR><LF><CR><LF>
Parameters:
commod help: command introduction;
4.2.2.42. AT+FVEW
Function: Enable/Disable Ethernet WANN mode. It's valid only if restore to factory
setting.;
Format:
Query Operation
AT+ FVEW<CR> +ok=<status><CR><LF><CR><LF>
Set Operation
AT+ FVEW=<status><CR>
+ok<CR><LF><CR><LF>
Parameters:
status: Enable or Disable Ethernet WANN mode..
enable, enable Ethernet WANN mode;
disable, disable Ethernet WANN mode, then it works in Ethernet LANN
mode.(default mode)
If Ethernet WANN mode is valid. Then wireless connecting router in STA mode is
invalid. It only support connecting to router by Ethernet..
4.2.2.43. AT+FVER
Function: Set/Query module working mode; Format:
Query Operation
AT+ FVER<CR> +ok=<status><CR><LF><CR><LF>
Set Operation
AT+ FVER=<n/z><CR>
+ok<CR><LF><CR><LF>
Parameters:
status: module working mode..
n: router mode.(default mode)
z: bridge mode.
4.2.2.44. AT+WMAC
Function: Set/Query module MAC address; Format:
Query Operation
AT+ WMAC<CR> +ok=<address><CR><LF><CR><LF>
Set Operation
AT+ WMAC=<address><CR>
+ok<CR><LF><CR><LF>
Parameters:
address: module MAC address in AP mode.
The modules STA MAC address is APs MAC address plus 1. For example, AP
address: ACCF23208888, then STA address: ACCF23208889.
4.2.2.45. AT+PING
Function: PING command; Format:
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Set Operation
AT+ PING=<address><CR>
+ok=<status><CR><LF><CR><LF>
Parameters:
address: target IP address. Status:command result.
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5. PACKAGE INFORMATION
5.1 Shipping Information
TRAY BOX
Size:350*350*70 mm Size:350*350*350 mm
Figure 41. Shipping Information
Note:
1 tray = 500 pcs
1 box = 5 trays = 5 * 100 pcs = 2500pcs
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HF-A21-SMT Embedded WiFi Module User Manual
HF-A21-SMT
AP, LAN IP:10.10.100.254 TCP, Server 8899
HF-A21-SMT
STA,
LAN IP:10.10.99.254
WAN IP: 10.10.100.100 TCP, Client
10.10.100.254: 8899
1# 2#
WIFI
MCU
MCU
UART
UART
APPENDIX A: QUESTIONS AND ANSWERS
Q1: How to configure transparent serial port application (TCP protocol) with two HF-A21-SMT modules?
Network structure as below figure:
Module 1# Setting:
Works as AP mode; --See “Mode Selection Page”
LAN IP address: 10.10.100.254; --See “AP Interface Setting Page”
Network Protocal:TCP/Server, Port ID: 8899; -- See “Application Setting Page”
(Module default setting);
Module 2# Setting:
Works as STA mode; --See “Mode Selection Page”
WAN connection type: DHCP or Static IP (For this example:10.10.100.100)
--See “STA Interface Setting Page”
Network Protocal:TCP/Client, Port ID: 8899; Application IP address: Module 1#s LAN
IP address (10.10.100.254); -- See “Application Setting Page”
Notes: When module 2# works as STA mode, modules WiFi interface works as WAN
port. Modules WAN IP address and LAN IP address shall be setting different segment.
So, module 2#s LAN IP address must change to other segment; (For this sample, we
change to 10.10.99.254); --See “AP Interface Setting Page”
Q2: Where to Set HF-A21-SMT Module LAN IP and WAN IP through Web Page
HF-A21-SMT Wireless LAN IP address setting see “AP Interface Setting Page” as below Figure,
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Figure 42. Configure Transparent Serial Port Connection (TCP)
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HF-A21-SMT Embedded WiFi Module User Manual
HF-A21-SMT
AP, LAN IP:10.10.100.254
UDP
10.10.100.100:8899
HF-A21-SMT
STA,
LAN IP:10.10.99.254
WAN IP: 10.10.100.100
UDP
10.10.100.254:8899
1# 2#
WIFI
MCUMCU
UARTUART
Figure 43. Module LAN IP Setting
HF-A21-SMT Wireless WAN IP address setting see “STA Interface Setting Page” as below Figure,
User can set WAN connection type to DHCP and STATIC IP.
Figure 44. Module WAN IP Setting
Q3: How to configure transparent serial port application (UDP protocol) with two HF-A21-SMT modules?
Network structure as below figure:
Module 1# Setting:
Works as AP mode; --See “Mode Selection Page”
LAN IP address: 10.10.100.254; --See “AP Interface Setting Page”
Network Protocal:UDP, Port ID: 8899; Application IP address:10.10.100.100;
-- See “Application Setting Page”
Module 2# Setting:
Works as STA mode; --See “Mode Selection Page”
WAN connection type: Static IP (10.10.100.100)
--See “STA Interface Setting Page”
Network Protocal:UDP, Port ID: 8899; Application IP address: Module 1#‟s LAN IP
address (10.10.100.254); -- See “Application Setting Page”
LAN IP address: 10.10.99.254 (Different net segment with WAN port)
--See “AP Interface Setting Page”
Figure 45. Configure Transparent Serial Port Connection (UDP)
Q4: Where to set HF-A21-SMT module network protocol (TCP/UDP)?
HF-A21-SMT network protocol setting see “Application Setting Page” as below Figure,
Protocol: TCP Server
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Only Port ID required: 8899 (Default)
Figure 46. Module Network Protocols: TCP/Server
Protocol: TCP Client
Application IP address required: it‟s target TCP server „s IP address;
Port ID required: 8899 (Default)
Figure 47. Module Network Protocol: TCP/Client
Protocol: UDP
No Server/Client selection required;
Application IP address required: it‟s target device „s IP address;
Port ID required: 8899 (Default)
Figure 48. Module Network Protocol: UDP
Q5: How to configure transparent serial port application: Two HF-A21-SMT modules all configured as STA and connection through AP?
Network structure as below figure:
Module 1# Setting: ( We use HF-A21-SMT as AP for this example)
Works as AP mode and all default setting;
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HF-A21-SMT
AP, LAN IP:10.10.100.254 TCP, Server 8899
HF-A21-SMT
STA,
LAN IP:10.10.98.254
WAN IP: 10.10.100.101 TCP, Client
10.10.100.100: 8899
2#
3#
WIFI
MCUMCU
UARTUART
HF-A21-SMT
1#
WIFI
STA,
LAN IP:10.10.99.254
WAN IP: 10.10.100.100 TCP, Server 8899
Module 2# Setting:
Works as STA mode; --See “Mode Selection Page”
WAN connection type: Static IP: 10.10.100.100; --See “STA Interface Setting Page”
Network Protocal:TCP/Server, Port ID: 8899; -- See “Application Setting Page”
LAN IP address: 10.10.99.254 (Different net segment with WAN port);
Module 3# Setting:
Works as STA mode; --See “Mode Selection Page”
WAN connection type: Static IP: 10.10.100.101; --See “STA Interface Setting Page”
Network Protocal:TCP/Client, Port ID: 8899; Application IP address: Module 2#s WAN
IP address (10.10.100.100); -- See “Application Setting Page”
LAN IP address: 10.10.98.254 (Different net segment with WAN port);
--See “AP Interface Setting Page”
--See “AP Interface Setting Page”
Figure 49. Two HF-A21-SMT Modules Connection Through AP
Q6: How to avoid IP address confliction when apply HF-A21-SMT module?
The following address allocation method can avoid the IP address confliction for dynamic and
static IP address mixed application.
Module dynamic IP address range from 100 to 200 for last IP address segment.
Such as default IP: 10.10.100.254. When module works as AP, the IP address module
can allocate to STA is from 10.10.100.100 to 10.10.100.200;
So, if user needs to set static IP for dedicated STA internal network, the available IP address
range can start from 10.10.100.1 to 10.10.100.99.
Q7: PC works as server, all HF-A21-SMT modules works as data acquisition card and connect with PC, how to configure this application?
Network structure as below figure: Three HF-A21-SMT module setup 3 TCP links with PC server.
Module 1# works as AP and all devices connect to module 1# through WiFi interface;
PC Setting:
IP address: 10.10.100.100;
Network Protocal:TCP/Server, Port ID: 8899;
Module 1# Setting:
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HF-A21-SMT Embedded WiFi Module User Manual
HF-A21-SMT
AP, LAN IP:10.10.100.254
TCP, Client
10.10.100.100:8899
HF-A21-SMT
STA,
LAN IP:10.10.98.254
WAN IP: 10.10.100.102 TCP, Client
10.10.100.100: 8899
2#
3#
WIFI
MCUMCU
UARTUART
HF-A21-SMT
1#
WIFI
STA,
LAN IP:10.10.99.254
WAN IP: 10.10.100.101 TCP, Client
10.10.100.100:8899
WIFI
PC
IP: 10.10.100.100 TCP, Server 8899
MCU
UART
Works as AP mode;
LAN IP address: 10.10.100.254;
Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;
Module 2# Setting:
Works as STA mode;
WAN connection type: Static IP: 10.10.100.101;
Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;
LAN IP address: 10.10.99.254 (Different net segment with WAN port);
Module 3# Setting:
Works as STA mode;
WAN connection type: Static IP: 10.10.100.102;
Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;
LAN IP address: 10.10.98.254 (Different net segment with WAN port);
Figure 50. Wireless Data Acquisition Card Setting
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HF-A21-SMT Embedded WiFi Module User Manual
APPENDIX B: EVB REFERENCE DESIGN
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HF-A21-SMT Embedded WiFi Module User Manual
APPENDIX C: CONTACT INFORMATION
-----------------------------------------------------------------------------------------------------------­Address: Room 1002,Building 1,No.3000,Longdong Avenue,Pudong New
Area,Shanghai,China, 201203
Web: www.hi-flying.com Service Online: 400-189-3108 Mail Contact: sales@hi-flying.com
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END OF DOCUMENT
© Copyright High-Flying, May, 2011
The information disclosed herein is proprietary to High-Flying and is not to be used by or disclosed to unauthorized persons
without the written consent of High-Flying. The recipient of this document shall respect the security status of the information.
The master of this document is stored on an electronic database and is “write-protected” and may be altered only by
authorized persons at High-Flying. Viewing of the master document electronically on electronic database ensures access to
the current issue. Any other copies must be regarded as uncontrolled copies.
Shanghai High-Flying Electronics Technology Co., Ltd
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FCC INFORMATION (additional) OEM INTEGRATION INSTRUCTIONS:
This device is intended only for OEM integrators under the following conditio
ns:
The module must be installed in the host equipment such that 20 cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the internal
antenna(s) that has been originally tested and certified with this module.
As long as 3 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example,
digital device emissions, PC peripheral requirements, etc.).
Validity of using the module certification:
In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the
transmitter) and obtaining a separate FCC authorization.
End product labeling:
This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final
end product must be labeled in a visible area with the following: Contains FCC ID: 2ACSV-HF-A21-SMT”.
Information that must be placed in the end user manual:
The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory
information/warning as show in this manual.
This device must be kept away from all persons by 20cm or more and installations using less distance, or installations using antennas with gain greater than that with which this was Certified will require additional approvals.
Antenna Specification: Type: PCB Antenna Model: HF-A21-SMT Brand: High-Flying Gain: 2.07dBi
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