I in stm32f407 bluetooth module can be used, but in the 51 single-chip microcomputer with bluetooth module cannot receive the data, even into the mode of the AT command cannot be received,

CodePudding user response:

May be a communication problem, check the baud rate of what is right,

CodePudding user response:

All checked, is no good, no response after click send

CodePudding user response:

Confirm software is not a software problem is a hardware problem, if yes, check the circuit,