stm32f103c8t6hc05代码

STM32F103C8T6是一款常用的单片机芯片，具有较高的性能和广泛的应用范围。下面是一些关于STM32F103C8T6芯片的代码介绍：

1. 系统初始化代码：包括时钟初始化、GPIO初始化等，可根据需要修改配置参数。

#include "stm32f10x.h"

void SystemInit(void)
{
  /* Reset the RCC clock configuration to the default reset state ------------*/
  /* Set HSION bit */
  RCC->CR |= (uint32_t)0x00000001;

  /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
  RCC->CFGR &= (uint32_t)0xF8FFB80C;

  /* Reset HSEON, CSSON and PLLON bits */
  RCC->CR &= (uint32_t)0xFEF6FFFF;

  /* Reset HSEBYP bit */
  RCC->CR &= (uint32_t)0xFFFBFFFF;

  /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
  RCC->CFGR &= (uint32_t)0xFF80FFFF;

  /* Disable all interrupts and clear pending bits  */
  RCC->CIR = 0x009F0000;

  /* Configure the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers */
  /* PLL configuration: PLLCLK = HSE * 9 = 72 MHz */
  RCC->CFGR |= (uint32_t)0x001D0400;
  RCC->CFGR |= (uint32_t)0x00000400;

  /* Enable PLL */
  RCC->CR |= (uint32_t)0x01000000;

  /* Wait till PLL is ready */
  while((RCC->CR & RCC_CR_PLLRDY) == 0)
  {
  }

  /* Select PLL as system clock source */
  RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
  RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;

  /* Wait till PLL is used as system clock source */
  while((RCC->CFGR & (uint32_t)RCC_CFGR_SWS ) != RCC_CFGR_SWS_PLL)
  {
  }
}

2. LED控制代码：以PA4为例，控制LED灯的开关。

#include "stm32f10x.h"

void LED_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void LED_On(void)
{
    GPIO_SetBits(GPIOA,GPIO_Pin_4);
}

void LED_Off(void)
{
    GPIO_ResetBits(GPIOA,GPIO_Pin_4);
}

void LED_Toggle(void)
{
    GPIO_WriteBit(GPIOA,GPIO_Pin_4,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOA,GPIO_Pin_4)));
}

3. 定时器中断代码：以TIM2为例，配置为1ms中断一次。

#include "stm32f10x.h"

void TIM2_Init(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    NVIC_InitTypeDef NVIC_InitStructure;
    
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
    
    TIM_TimeBaseStructure.TIM_Period = 720-1;
    TIM_TimeBaseStructure.TIM_Prescaler = 1000-1;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
    
    TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
    
    NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    
    TIM_Cmd(TIM2, ENABLE);
}

void TIM2_IRQHandler(void)
{
    if(TIM_GetITStatus(TIM2,TIM_IT_Update)!=RESET)
    {
        //do something
        TIM_ClearITPendingBit(TIM2,TIM_IT_Update);
    }
}