帮我写一段stm32点亮小灯的c'语言代码

Sure, here's a sample code for lighting up a LED on an STM32 microcontroller using C language:

#include "stm32f4xx.h"

int main(void)
{
    // Enable the clock for GPIOA peripheral
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    // Configure PA5 as output
    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStruct);

    // Turn on the LED
    GPIO_SetBits(GPIOA, GPIO_Pin_5);

    while(1)
    {
        // Do nothing
    }
}

This code initializes the GPIOA peripheral and configures pin PA5 as an output. It then turns on the LED connected to that pin and enters an infinite loop.