RAYTAC MDBT42T-AT-UART-S, Руководство пользователя

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5.2. How to Transmit Data
* Only when BT is connected *
1.
Output low to UART PD pin to enable UART interface. Please keep it low during the
whole time when transmitting data.
2.
Output high or NC to UART PD pin to turn off UART interface.
5.3. How to Return to Flashed Default Setting
* Only when BT is NOT connected *
* Note that default baud rate is “9600bps,n,8,1”. For other default, please
check “
4.3 Default Info ”
⚫ Use Hardware Method
1.
Read indicator pin first to check if BT is NOT in connection.
2.
Output a low pulse to flash default pin, then system will return to default setting.
⚫ Use Software method
1.
Output low to UART PD pin to enable UART interface. Please keep in low during the
whole time when sending AT commands.
2.
Send command “ AT+DEFAULT ”, then system will return to default setting.