WISOL SFM20R4 Users manual

Version 1.0

WISOL

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SigFox

GPS(GLONASS)

ON semiconductor

UBLOX

AX-SFUS-1-01

UBX-G8020

User Manual of WSSFM20R4(Rev1.0)

1. Introduction

The WSSFM20R4 module is a quad mode module supporting Sigfox, BLE, WiFi and GPS.
This Module able to transmit and receive messages using the SIGFOX network.
The typical applications can be used as a low power tracking device.
The application use WIFI or GPS to determine location. It will then transmit the location information via SIGFOX.
It also will transmit other information like temperature, accelerometer, and so on.

2. Hardware Architecture:

2.1 Main Chipset Information

Item Vendor

BLE

WIFI

NORDIC semiconductor

ESPRESSIF

Part Number

nRF52832

2.2 Circuit Block Diagram

The major internal and external block diagram of WSSFM20R4 is illustrated in Figure 1-1.

ESP8285

Figure 1-1

WSSFM20R4 block diagram and System Interface

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3. Operational Descripti on

-SIGFOX

SIGFOX able to transmit and receive messages using the SIGFOX network.

This module address the RCZ4(Australia, new Zealand).

-BLE

Bluetooth 4.2 optimized for low-power applications.
The RADIO contains a 2.4 GHz radio receiver and a 2.4 GHz radio transmitter that is compatible with
Nordic's proprietary 1 Mbps and 2 Mbps radio modes in addition to 1 Mbps Bluetooth® low energy mode.

-WIFI

ESP8285 implements TCP/IP, the full 802.11 b/g/n/e/i WLAN MAC protocol and Wi-Fi
Direct specification. It supports not only basic service set (BSS) operations under the distributed control function
(DCF) but also P2P group operation compliant with the latest Wi-Fi P2P protocol. Low level protocol functions
are handled automatically by ESP8285.

• RTS/CTS

• acknowledgement

• fragmentation and defragmentation

• aggregation

• frame encapsulation (802.11h/RFC 1042)

• automatic beacon monitoring / scanning, and

• P2P Wi-Fi direct
Passive or active scanning, as well as P2P discovery procedure is performed autonomously once initiated by
the appropriate command. Power management is handled with minimum interac ti on with hos t to m inimize active
duty period.

-GPS (GLONASS)

The application use GPS(GLONASS) to determine location. It will then transmit the location information via
SIGFOX. It also will transmit other information like temperature, accelerometer, and so on.

3.1 Features

- SIGFOX

> Sigfox up-link and down-link functionality controlled by AT commands
> Temperature sensor
> Ultra-low power consumption

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> High performance narrow-band Sigfox

- BLE

> Based on Nordic Semiconductor nRF52832 Bluetooth Smart Soc
(ARM Cortex –M4F, 512KB flash, and 64KB RAM embedded)
> Ultra-low power multiprotocol support
> BLE Wireless application
> Bluetooth specification Version 4.2 (LE single mode) compliant
> External interface: 32 GPIO pins for NFC(tag), SPI, TWI, UART, Crystal (32.768 KHz) and ADC

-WIFI

> 2.4 GHz receiver
> 2.4 GHz transmitter
> High speed clock generators and crystal oscillator
> Real-Time Clock
> Bias and regulators
> Power management

-GPS (GLONASS)

blox 8 position engine featuring: ver 2 million effective correlators

> down to 1 s acquisition time
> up to 18 Hz navigation update rate in single GNSS mode
> Supports GPS and GLONASS as well as SBAS and QZSS
> Supports u-blox’s AssistNow Online / AssistNow Offline A-GNSS services and is OMA SUPL 1.0 compliant
> Supports u-blox’s AssistNow Autonomous (no connectivity required)
> Supports crystal oscillator and TCXO
> Supports a built-in DC/DC converter and an intelligent, user configurable power management
> Supports data logging, odometer, geo-fencing, spoofing detection, and message integrity protection.

3.2 Time base of the RF frequency

-SIGFOX

For Sigfox RF frequency, a TCXO(48MHz) is a clock reference.

-BLE

Using external 32.768 kHz crystal for RTC.
The 64 MHz crystal oscillator (HFXO) is controlled by a 32 MHz external crystal.

-WIFI

The high frequency clock on ESP8285 is used to drive both transmit and receive mixers.
This clock is generated from internal crystal oscillator and external crystal. The crystal frequency is 26 MHz.