Pico-BLE User manual
版本：
V1.0
，日期：
2021
年
12
月
16
日
9 / 10
decrease
Chip BLE enable and SPP enable
AT+B401\r\n
Enable BLE function. Of course AT+B400\r\n is closed
AT+B500\r\n
Disable the function of SPP. Of course AT+B501\r\n is turned on
AT+T4\r\n
Check whether the BLE function is enabled. The chip will return T4+01 or T4+00
AT+T5\r\n
Check whether the SPP function is enabled. The chip will return T5+01 or T5+00
1. After the BLE/SPP function is turned off, it must be powered on again for this function to take
effect. Of course it's the same
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.
Description of the error message returned by the chip
ER+1\r\n
The received data frame is incorrect
ER+2\r\n
The received command does not exist, that is, the string like AT+KK you sent cannot be
