基于stm32f103最小使用code

总共有4个文件，其中led.c和debug.c可以不需要 

         - main.c

         - system.c

         - debug.c

         - led.c

1. main.c

主要实现系统的初始化，led端口，串口的初始化，此处如果发现1S灯闪烁，打印出"hello world"，就说明初步环境好了，可以在这基础上添加自己的代码了。

#include "stm32f10x.h"#include "includes.h"int main(void){system_init();led_init();uart1_init();led_on(0);sys_delay_ms(1000);led_off(0);sys_delay_ms(1000);while(1){sys_delay_ms(2000);led_toggle(0);printf("hello world\r\n");}}#ifdef  USE_FULL_ASSERT/**  * @brief  Reports the name of the source file and the source line number  *         where the assert_param error has occurred.  * @param  file: pointer to the source file name  * @param  line: assert_param error line source number  * @retval None  */void assert_failed(uint8_t* file, uint32_t line){   while (1)  {     }}#endif/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

2. system.c

   此文件实现系统时钟配置，中断向量表配置和systick配置。

#include "system.h"#include "stm32f10x_it.h"ErrorStatus HSEStartUpStatus;//1. clock configvoid rcc_configuration(void){RCC_DeInit();    RCC_HSEConfig(RCC_HSE_ON); HSEStartUpStatus = RCC_WaitForHSEStartUp();  if(SUCCESS == HSEStartUpStatus){    FLASH_SetLatency(FLASH_Latency_2);    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);        RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);    RCC_PLLCmd(ENABLE);     while(RESET == RCC_GetFlagStatus(RCC_FLAG_PLLRDY))       {        }    // HCLK  up to 72MHz    RCC_HCLKConfig(RCC_SYSCLK_Div1);   //AHBÍâÉè    RCC_PCLK1Config(RCC_HCLK_Div2);    //APB1ÍâÉè    RCC_PCLK2Config(RCC_HCLK_Div1);    //APB2ÍâÉè       RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);    while(0x08 != RCC_GetSYSCLKSource())    {    }}  }//2.nvic configvoid nvic_configuration(void){#ifdef  VECT_TAB_RAM NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);#else NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);#endif}//3. systick config/  1ms void systick_configuration(void){//clk configurationSysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);SysTick_Config(72000);//1ms arise interrupt}//4. systick ms_delay  void sys_delay_ms(uint16_t ms){uint32_t _t = systick_ms_counter+ms;while(systick_ms_counter < _t);}//5. systick s_delayvoid sys_delay_1s(uint16_t s){uint32_t _t = systick_s_counter + s;while(systick_s_counter < _t);}//6. sys_initvoid system_init(void){rcc_configuration();nvic_configuration();systick_configuration();}//7. uncertain_delayvoid delay(uint16_t dly){int i,j;for(i = 0;i<dly;i++)for(j = 0;j<1;j++);}

3. debug.c

   该文件用于实现打印串口驱动，只提供打印输出，利用printf函数的重映射，还需要在Keil软件中进行设置，否则打印不出来滴

#include "includes.h"void usart1_gpio_config(void){GPIO_InitTypeDef  GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//DBTX  PA9GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_Init(GPIOA,&GPIO_InitStructure);//DBRX  PA10GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOA,&GPIO_InitStructure);}//2.void usart1_func_config(void){USART_InitTypeDef  USART_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);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_Mode = USART_Mode_Rx | USART_Mode_Tx;USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;USART_Init(USART1,&USART_InitStructure);USART_Cmd(USART1,ENABLE);//USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);}//3.void uart1_nvic_config(void){NVIC_InitTypeDef  NVIC_InitStructure;NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);}//4.串口初始化，对外的接口.void uart1_init(void){usart1_gpio_config();usart1_func_config();//uart1_nvic_config();}//5.printf函数的重映射实现int fputc(int ch, FILE * f){    //rs232 Debug    USART_SendData(USART1, (uint8_t)ch);    while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);     return ch;}

4. led.c

    该文件实现板子上led  GPIO口的配置初始化，灯的开，关，闪烁功能。

#include "includes.h"//led config//pe8 pe9void led_init(void){ GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOE,&GPIO_InitStructure); GPIO_SetBits(GPIOE,GPIO_Pin_8|GPIO_Pin_9); }//void led_on(uint8_t ledid){switch(ledid){case 0:GPIO_ResetBits(GPIOE,GPIO_Pin_8|GPIO_Pin_9);break;case 1:GPIO_ResetBits(GPIOE,GPIO_Pin_8);break;case 2:GPIO_ResetBits(GPIOE,GPIO_Pin_9);break;default:break;}}//void led_off(uint8_t ledid){switch(ledid){case 0:GPIO_SetBits(GPIOE,GPIO_Pin_8|GPIO_Pin_9);break;case 1:GPIO_SetBits(GPIOE,GPIO_Pin_8);break;case 2:GPIO_SetBits(GPIOE,GPIO_Pin_9);break;default:break;}}void led_toggle(uint8_t led_id){switch(led_id){case 0:GPIO_WriteBit(GPIOE,GPIO_Pin_8,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOC,GPIO_Pin_8))); GPIO_WriteBit(GPIOE,GPIO_Pin_8,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOC,GPIO_Pin_8))); break;case 1:GPIO_WriteBit(GPIOE,GPIO_Pin_8,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOC,GPIO_Pin_8)));break;case 2:GPIO_WriteBit(GPIOE,GPIO_Pin_8,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOC,GPIO_Pin_8)));break;default:break;}}

5. stm32f10x_it.c

    感觉也有必要贴出中断服务函数文件，这里面最开始配置了systick的中断服务函数

#include "stm32f10x_it.h"uint32_t systick_ms_counter = 0;uint32_t systick_s_counter = 0;void NMI_Handler(void){}/**  * @brief  This function handles Hard Fault exception.  * @param  None  * @retval : None  */void HardFault_Handler(void){  /* Go to infinite loop when Hard Fault exception occurs */  while (1)  {  }}/**  * @brief  This function handles Memory Manage exception.  * @param  None  * @retval : None  */void MemManage_Handler(void){  /* Go to infinite loop when Memory Manage exception occurs */  while (1)  {  }}/**  * @brief  This function handles Bus Fault exception.  * @param  None  * @retval : None  */void BusFault_Handler(void){  /* Go to infinite loop when Bus Fault exception occurs */  while (1)  {  }}/**  * @brief  This function handles Usage Fault exception.  * @param  None  * @retval : None  */void UsageFault_Handler(void){  /* Go to infinite loop when Usage Fault exception occurs */  while (1)  {  }}/**  * @brief  This function handles SVCall exception.  * @param  None  * @retval : None  */void SVC_Handler(void){}/**  * @brief  This function handles Debug Monitor exception.  * @param  None  * @retval : None  */void DebugMon_Handler(void){}/**  * @brief  This function handles PendSVC exception.  * @param  None  * @retval : None  */void PendSV_Handler(void){}/**  * @brief  This function handles SysTick Handler.  * @param  None  * @retval : None  */void EXTI1_IRQHandler(){}/* ¹¦ÄÜ£º µ±ÓнÓÊÕÖжÏʱ£¬½«½ÓÊÕµÄ×Ö·û´®´æ·ÅÔÚRxBuff[]ÖÐ          µ±Óз¢ËÍÖжÏʱ£¬½«TxBuff[]ÖеÄÊý¾Ý·¢Ë͵½PC¶Ë*/void UART4_IRQHandler(){}void SysTick_Handler(){systick_ms_counter++;   //msif(systick_ms_counter%1000==0){systick_s_counter++; //s}}void USART1_IRQHandler(){}/******************************************************************************//*                 STM32F10x Peripherals Interrupt Handlers                   *//*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  *//*  available peripheral interrupt handler's name please refer to the startup *//*  file (startup_stm32f10x_xx.s).                                            *//******************************************************************************//**  * @brief  This function handles PPP interrupt request.  * @param  None  * @retval : None  *//*void PPP_IRQHandler(void){}*//**  * @}  */ /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/