Description Of The Error Message Returned By The Chip; Chip Power-On Callback Information Settings - Waveshare RP2040-BLE User Manual

2. You only need to set it once, the chip automatically saves the parameters, and you don't need
to set it next time.
3. After the BLE/SPP function is turned off, the mobile phone cannot search for the name of BLE.

2.8 DESCRIPTION OF THE ERROR MESSAGE RETURNED BY THE CHIP

Focus on the description of notify [monitoring]. After the test APP on the mobile phone is
connected to the Bluetooth chip, notify must be turned on. The bluetooth chip can send data
to the mobile phone. When the mobile phone sends data to the Bluetooth chip, it is enough to
use the write feature.

2.9 CHIP POWER-ON CALLBACK INFORMATION SETTINGS

AT+CR00\r\n Turn off postback messages for power-on. Be careful to restart the power after setting
Enable the return message of chip power-on. It is valid at the next power-on. Be careful to
AT+CR01\r\n
restart the power after setting
Note: After this function is turned off, it will also turn off the OK or ER+X return information that is actively
returned after the AT command is executed. It is recommended to keep it turned on here.
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