stm32 printf

The STM32 microcontroller supports the printf() function from the C standard library. This function is used to output formatted text to a console or other output device.

To use printf() on an STM32 microcontroller, you first need to initialize the USART peripheral and configure it for the desired baud rate and other settings. Then, you can use the printf() function in your code to output text to the USART.

Here is an example code snippet that demonstrates how to use printf() on an STM32 microcontroller:

#include <stdio.h>
#include "stm32f4xx.h"

int main(void)
{
    // Initialize USART2 peripheral
    USART_InitTypeDef USART_InitStructure;
    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx;
    USART_Init(USART2, &USART_InitStructure);
    USART_Cmd(USART2, ENABLE);

    // Use printf to output text to USART2
    printf("Hello, world!\r\n");

    while (1)
    {
        // do other stuff here
    }
}

In this example, we first initialize the USART2 peripheral with the desired settings. Then, we use printf() to output the text "Hello, world!" to the USART. Finally, we enter an infinite loop to keep the microcontroller running.

Note that in order to use printf() on an STM32 microcontroller, you need to have a working implementation of the stdio library. This can be included as part of your project or provided by the vendor of your development board or toolchain.