stm32 prints data to PC serial port-EEWORLD

Collect

1. Generally speaking, many people use printf function redirection to achieve this, but it is not very clear.

Therefore, the sprintf function is used here to implement it.

Second, the whole idea is to put the data to be printed into the serial port send buffer of MCU to PC.

3. The sprintf function is in the stdio.h header file, so if you want to use it in the program, you must include this header file.

4. Example:

void PC_SendChar(uint8_t DataToSend)

{

RS485_TX_Enable();

USART_SendData (USART1,DataToSend);

while(USART_GetFlagStatus (USART1 ,USART_FLAG_TC )!=SET );

RS485_RX_Enable();

}

void PC_SendString(uint8_t *str)

{

while(*str)

{

PC_SendChar (*str);

str++;

}

char Param_Out[30];?

sprintf(Param_Out ,"The voltage of System Basic is %.5f V\r\n",System_Basic_Vol);

PC_SendString((u8*)Param_Out );

Keywords：stm32 Reference address：stm32 prints data to PC serial port

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