基于STM32的TIM1s定时程序
#include "stm32f10x.h"
#include "misc.h"
#include "stm32f10x_tim.h"
static __IO uint32_t TimingDelay;
void RCC_Configuration(void);
void Delay(__IO uint32_t nCount);
void GPIO_Config(void);
void NVIC_Config(void);
void Timer_Config(void);
void GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
/* Initialize Leds mounted on STM3210E-LK board */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13| GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure); //B组GPIO初始化
SysTick_Config(SystemFrequency / 1000);
}
void NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
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);
}
void Timer_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_DeInit(TIM2);
TIM_TimeBaseStructure.TIM_Period=2000;
TIM_TimeBaseStructure.TIM_Prescaler=(36000-1);
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);
TIM_ClearFlag(TIM2,TIM_FLAG_Update);
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM2,ENABLE);
}
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* System Clocks Configuration **********************************************/
RCC_Configuration(); //时钟初始化
Timer_Config();
GPIO_Config();
NVIC_Config();
while (1)
{
}
}
void RCC_Configuration(void)
{
/*ErrorStatus HSEStartUpStatus;
RCC_HSEConfig(RCC_HSE_ON);
HSEStartUpStatus=RCC_WaitForHSEStartUp();
if
(HSEStartUpStatus==SUCCESS)
{
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_4);
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)==RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource()!=0x08);
} */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
SystemInit(); //system_stm32f10x.c 中
/* Setup the microcontroller system. Initialize the Embedded Flash Interface,
initialize the PLL and update the SystemFrequency variable. */
}
/**
* @brief Inserts a delay time.
* @param nTime: specifies the delay time length, in milliseconds.
* @retval : None
*/
void Delay(__IO uint32_t nCount)
{
for(; nCount != 0; nCount--);
}
/**
* @brief Decrements the TimingDelay variable.
* @param None
* @retval : None
*/
void TimingDelay_Decrement(void)
{
if (TimingDelay != 0x00)
{
TimingDelay--;
}
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
#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)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
/**
******************************************************************************
* @file GPIO/IOToggle/stm32f10x_it.c
* @author MCD Application Team
* @version V3.1.0
* @date 06/19/2009
* @brief Main Interrupt Service Routines.
* This file provides template for all exceptions handler and peripherals
* interrupt service routine.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
*
© COPYRIGHT 2009 STMicroelectronics
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"
#include "stm32f10x_tim.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup GPIO_IOToggle
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/******************************************************************************/
/* Cortex-M3 Processor Exceptions Handlers
*/
/******************************************************************************/
/**
* @brief This function handles NMI exception.
* @param None
* @retval None
*/
int state;
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 PendSV_Handler exception.
* @param None
* @retval None
*/
void PendSV_Handler(void)
{
}
/**
* @brief This function handles SysTick Handler.
* @param None
* @retval None
*/
void SysTick_Handler(void)
{
}
void TIM2_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2,TIM_IT_Update)!=RESET)
{
TIM_ClearITPendingBit(TIM2,TIM_FLAG_Update);
switch(state)
{case 0:
GPIO_ResetBits(GPIOB, GPIO_Pin_12);
GPIO_SetBits(GPIOB, GPIO_Pin_13);
GPIO_SetBits(GPIOB, GPIO_Pin_14);
GPIO_SetBits(GPIOB, GPIO_Pin_15);
break;
case 1:
GPIO_SetBits(GPIOB, GPIO_Pin_12);
GPIO_ResetBits(GPIOB, GPIO_Pin_13);
GPIO_SetBits(GPIOB, GPIO_Pin_14);
GPIO_SetBits(GPIOB, GPIO_Pin_15);
break;
case 2:
GPIO_SetBits(GPIOB, GPIO_Pin_12);
GPIO_SetBits(GPIOB, GPIO_Pin_13);
GPIO_ResetBits(GPIOB, GPIO_Pin_14);
GPIO_SetBits(GPIOB, GPIO_Pin_15);
break;
case 3:
GPIO_SetBits(GPIOB, GPIO_Pin_12);
GPIO_SetBits(GPIOB, GPIO_Pin_13);
GPIO_SetBits(GPIOB, GPIO_Pin_14);
GPIO_ResetBits(GPIOB, GPIO_Pin_15);
break;
}
if(++state>=4)
{state=0;}
}
}
/******************************************************************************/
/* 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****/