Introduction - If you have any usage issues, please Google them yourself
The source code for the STM32' s UART to use routines, the main test UART1 function. Open the serial port before running debugging software, UART is configured as follows: Baud Rate: 9600bps Word Length: 8 bits Parity: None Stop bit: 1-bit programs running, debugging software, data reception area will display characters in ASCII code table The ' 0 ' to' z ' within the scope of the characters while developing on-board a small light LD3 ~ LD6 will be the order of light, and then the order off.