Bluetooth module connection problem

chenbingjy

Bluetooth module connection problem [Copy link]

I use two boards for Bluetooth communication. The big board is STM32F767, and the Bluetooth module is the following This is a slave module. It can connect to a mobile phone, the mobile phone sends data, and the Bluetooth module can receive it. The baud rate is 9600. The small board is STM32L151C8T6, and the Bluetooth module is HC-05, master mode. Now I have set the parameters, baud rate 9600, and then entered the transparent transmission mode. The mobile phone cannot connect to it. It also cannot connect to the Bluetooth module of the big board. The circuit diagram is as follows: After entering the transparent transmission mode, I keep sending data out. Using an oscilloscope, UART1_TX is the second pin of the Bluetooth module with a waveform. I have another question. I set the master mode. When I query, the data returned is: There are both 1 and 0. I don't know if the setting is successful. The data is as follows: Please give me some advice, thank you!

chenbingjy

Do it yourself.