RAYTAC MDBT42Q-AT-UART-S User Manual

Version: C

Issued Date: 2018/11/08

User Guide

(簡易使用手冊)

產品名稱 (Product): Demo Board for MDBT42Q-AT / PAT

產品型號 (Model No.): MDBT42Q – AT – UART – S

韌體版本 (FW Revision): 1.3

Index

1. Introduction ................................................................................................................... 3

1.1. Contents of the Set ............................................................................................... 3

2. Hardware Description ................................................................................................... 4

3. Reference Circuit ........................................................................................................... 6

4. AT Command ................................................................................................................. 7

4.1. List of supported commands ................................................................................. 7

4.2. AT Command Sets ................................................................................................ 8

4.3. Default Info ......................................................................................................... 14

5. How to Control External MCU .................................................................................... 15

5.1. How to Send AT Commands ............................................................................... 15

5.2. How to Transmit Data ......................................................................................... 16

5.3. How to Return to Flashed Default Setting ........................................................... 16

6. Test Report ................................................................................................................... 17

6.1. Current Test ........................................................................................................ 17

6.2. Throughput Test .................................................................................................. 18

7. Useful Links ................................................................................................................. 20

History of Firmware Revision ............................................................................................ 21

Release Note ....................................................................................................................... 23

3

1. Introduction

This document shows how to use the demo board (MDBT42Q-AT-UART-S) to test function of
MDBT42Q-AT & MDBT42Q-PAT.

MDBT42Q-AT-UART-S is designed for testing and debugging without building your own
board. The board is only available with MDBT42Q-AT (chip antenna) module. MDBT42Q-AT
will be pre-programmed with Raytac’s AT command firmware. If you don’t need such
pre-programming and is looking for nRF52810 module, please check MDBT42Q-192K &
MDBT42Q-P192K.

Please visit our website for spec sheet of every module mentioned above.

1.1. Contents of the Set

Each set includes MDBT42Q-AT-UART-S x 1 and mini-USB cable x 1. Please contact us if
the set you receive is not complete.

4

2. Hardware Description

(1) MDBT42Q-AT BLE module based on nRF52810.

(2) 32.768KHz crystal for external LF.

(3) 10uH & 15nH inductor for DC-to-DC mode.

(4) Interface to connect to external MCU.

(5) ADC input for battery detection only. Reference voltage is 0.6V.

Example:

formula: Input Voltage 





 

   



  

    

(6) UART interface for data bridge or AT commands.

(7) Wake-up key.

5

(8) Debug interface, connecting to Nordic’s nRF5X DK.

Important: Please be careful not to “erase” the module during testing. Raytac’s
AT command firmware will not be shared. You may need to send the unit to us
for re-programming when module’s FW is erased.

(9) 3.3V LDO to power up MDBT42Q-AT.

(10) LED for status indicator

(11) USB Power only

6

3. Reference Circuit

7

4. AT Command

4.1. List of supported commands

- Setting of device name

- Choose data rate of 1Mbps or 2Mbps on-air

- Set TX output power in 5 levels.

- Set advertising time

- Set connection interval under Mode 2

- Enable/disable advertising

- Set LED pattern indicating advertising or connecting status

- 7 sets of UART baud rates

- Enable/disable UART flow control

- Enable/disable interface of UART hardware

- Support 8 programmable output GPIO

- Power-down mode for power saving and GPIO wake-up

- Support DC-to-DC and LDO power mode

- Use internal or external 32.768KHz oscillator

- Recover-to-default setting with hardware and software method

- System reset of hardware and software

- Set serial number and retrieve

- Set or retrieve MAC Address

- Retrieve ADC value for battery detection

- Support maximum MTU 247bytes / data payload up to maximum 244 bytes