RAYTAC MDBT42Q - AT, Manual

Page: 15 / 68

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⚫ When BT is connected for following commands ONLY
Write: AT+DISCONNECT,
AT+SLEEP, AT+SETGPIOnnHIGH,
AT+SETGPIOnnLOW, AT+SETGPIOnnOFF
Read: AT?ADCVALUE
1.
Output low to UART PD pin to enable UART interface. Please keep it LOW during the
whole time when sending AT commands.
2.
Output low to flash default pin to enable receiving AT commands when BT is connected.
Please keep it LOW during the whole time when sending AT commands.
3.
Send “AT?ADCVALUE” or “AT+DISCONNECT” or “AT+SLEEP” or
“AT+SETGPIOnnHIGH” or “AT+SETGPIOnnLOW” or “AT+SETGPIOnnOFF”.
4.
Output high or NC to UART PD pin to turn off UART interface.
5.
Output high or NC to flash default pin to disable the module to receive AT commands
when BT is connected.