STM8 MCU Learning Summary 05-Bluetooth Module

The "Bluetooth module" used in this operation is "HC-06". Please pay attention to the following points:

01) "HC-06" (Bluetooth module), like "HC-05", both are controlled by "AT commands", but please note:

i) "HC-06" is connected to the "serial port", the voltage is "+5.0V", the "baud rate" defaults to "9600", the "device name" defaults to "HC-06", and the "pairing password" defaults to "1234";

ii) When "HC-06" sends "AT command", there is no need to add "\r\n" (Enter key) at the end;

iii) It needs to be used in conjunction with a "mobile phone app", and "Bluetooth Serial Port Assistant Pro" is recommended;

02) The main operations of "HC-06" corresponding to "AT commands" are as follows:

i) "Test communication": send "AT", return "OK";

ii) Modify the "baud rate": send "AT+BAUDx", "x" is "1~C" (uppercase letters, a total of "12"); for example: "AT+BAUD8" returns "OK115200";

"Digital"----"Baud rate";

“1”----“1200”; “2”----“2400”; “3”----“4800”; “4”----“9600” (default);

"5"----"19200"; "6"----"38400"; "7"----"57600"; "8"----"115200";

"9"----"230400"; "A"----"460800"; "B"----"921600"; "C"----"1382400";

iii) Modify the "Bluetooth name": send "AT+NAMEname", return "OKname", "name" is the "new name";

iv) Modify the "pairing password": send "AT+PINxxxx", return "OKsetpin", "xxxx" is the "new password";

After opening "Bluetooth Serial Port Assistant Pro" with a "mobile phone", it is recommended to set "Send Data Port" to "Send IO as HEX" (default "ASCII"), "End Symbol", and you can also set the "Keyboard Button" corresponding to the "Key Value";

In actual use, when the format of data sent by "Bluetooth Serial Port Assistant Pro" changes, "HC-06" can still select valid data, provided that the "valid data" is in "HEX" format. If it is in "ASCII" format, it needs to be converted;