我是一个初学者,在EK-STM32F学习板上做了一个测试程序,用定时器2控制时间,通过IO口线驱动一个LED闪烁,发现一个问题,在仿真是,灯闪得比较快,断电后运行已经写入到FLASH中的程序时,灯闪得很慢,请各位侠帮忙分析一下原因,这里先谢过各位了
快多少慢多少？什么程序？
至少应该有个编程的思路。
慢至少10倍左右
没法上传附件,晚些时候我将项目中的文件上传上来
项目中的两个相关文件
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
#include "stm32f10x_it.h"
#include "lcm.h"
#include "avr2stm32.h"
#include "display.h"
#include "touchscreen.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address ((u32)0x4001244C)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
vu16 ADC_ConvertedValue;
ErrorStatus HSEStartUpStatus;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void SysTick_Config(void);
void TIM2_Init(void);
/* Private functions ---------------------------------------------------------*/
void delay(void);
void delay()
{
int i = 0, j = 0;
for (i=0; i<0xfffff; i++) j++;
}
volatile u32 flash_timer = 0;
char display[4]={0,0};
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
debug();
#endif
//u16 flash = 0;
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* Configure the systick */
SysTick_Config();
TIM2_Init();
lcm_init();
show_logo();
en_touch_init();
while(1)
{
//u8 tmp = scan_touch();
if(0x00000000 == flash_timer)
{
//if(0x02 == touch_state)
{
touch_state = 0x00;
en_touch_init();
flash_timer = 1000;
GPIO_Write(GPIOC, GPIO_ReadOutputData(GPIOC) ^ GPIO_Pin_4);
}
}
}
}
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
/* PLLCLK = 4MHz * 14 = 56 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_14);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable peripheral clocks --------------------------------------------------*/
/* Enable DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);
/* Enable ADC1 and GPIOC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOC, ENABLE);
/* Enable GPIOA, GPIOB, GPIOC, GPIOD, GPIOE and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
/* TIM2 clocks enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
lcm_dbus_dir(LCM_DBUS_IN);
/*Configure PE.09 -- PE.10 as input pull_up; LCM_BUSY LCM_INT*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
/*Configure PE.08 PE.11-- PE.15 as output push-pull; LCM_RST LCM_CS2 LCM_CS1 LCM_RD LCM_WR LCM RS*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_11 | 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_10MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_Write(GPIOE, 0XFFFF);
/* Configure PC.04 -- PC.11 as Output push-pull : COM1~4 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures Vector Table base location.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
/* Configure the Priority Group to 2 bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* enabling interrupt */
//NVIC_InitStructure.NVIC_IRQChannel=USB_LP_CAN_RX0_IRQChannel;
//NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
//NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
//NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//NVIC_Init(&NVIC_InitStructure);
/* DISABLE the EXTI1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE;
NVIC_Init(&NVIC_InitStructure);
/* enabling interrupt */
NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure the SysTick handler priority */
NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 2, 0);
}
void SysTick_Config(void)
{
/* Configure HCLK clock as SysTick clock source */
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
/* SysTick interrupt each 100 Hz with HCLK equal to 72MHz */
SysTick_SetReload(720000);
/* Enable the SysTick Interrupt */
SysTick_ITConfig(ENABLE);
/* Enable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Enable);
}
void TIM2_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 8000;
TIM_TimeBaseStructure.TIM_Prescaler = 17;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM2,DISABLE);
/* only counter overflow/underflow generate U interrupt */
TIM_UpdateRequestConfig(TIM2,TIM_UpdateSource_Regular);
/* Output Compare Timing Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
TIM_OCInitStructure.TIM_Channel = TIM_Channel_1;
TIM_OCInitStructure.TIM_Pulse = 4000;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInit(TIM2, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable);
/* TIM IT enable */
TIM_ITConfig(TIM2, TIM_IT_CC1 | TIM_IT_Update, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM2, ENABLE);
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* Input : - file: pointer to the source file name
* - line: assert_param error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 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
", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
第二个
/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name : stm32f10x_it.c
* Author : MCD Application Team
* Version : V1.0
* Date : 10/08/2007
* Description : Main Interrupt Service Routines.
* This file can be used to describe all the exceptions
* subroutines that may occur within user application.
* When an interrupt happens, the software will branch
* automatically to the corresponding routine.
* The following routines are all empty, user can write code
* for exceptions handlers and peripherals IRQ interrupts.
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
#include "stm32f10x_it.h"
#include "lcm.h"
#include "avr2stm32.h"
#include "display.h"
#include "touchscreen.h"
extern volatile u32 flash_timer;
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
const u16 com[4]={GPIO_Pin_11,GPIO_Pin_10,GPIO_Pin_9,GPIO_Pin_8};
/* Private macro -------------------------------------------------------------*/
#define COMPORT (u16)(GPIO_Pin_11 | GPIO_Pin_10 | GPIO_Pin_9 | GPIO_Pin_8)
/* Private variables ---------------------------------------------------------*/
u8 var=0,lcdcr=0;
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : NMIException
* Description : This function handles NMI exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NMIException(void)
{
}
/*******************************************************************************
* Function Name : HardFaultException
* Description : This function handles Hard Fault exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void HardFaultException(void)
{
/* Go to infinite loop when Hard Fault exception occurs */
while (1)
{
}
}
/*******************************************************************************
* Function Name : MemManageException
* Description : This function handles Memory Manage exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void MemManageException(void)
{
/* Go to infinite loop when Memory Manage exception occurs */
while (1)
{
}
}
/*******************************************************************************
* Function Name : BusFaultException
* Description : This function handles Bus Fault exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void BusFaultException(void)
{
/* Go to infinite loop when Bus Fault exception occurs */
while (1)
{
}
}
/*******************************************************************************
* Function Name : UsageFaultException
* Description : This function handles Usage Fault exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void UsageFaultException(void)
{
/* Go to infinite loop when Usage Fault exception occurs */
while (1)
{
}
}
/*******************************************************************************
* Function Name : DebugMonitor
* Description : This function handles Debug Monitor exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DebugMonitor(void)
{
}
/*******************************************************************************
* Function Name : SVCHandler
* Description : This function handles SVCall exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SVCHandler(void)
{
}
/*******************************************************************************
* Function Name : PendSVC
* Description : This function handles PendSVC exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void PendSVC(void)
{
}
/*******************************************************************************
* Function Name : SysTickHandler
* Description : This function handles SysTick Handler.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SysTickHandler(void)
{
}
/*******************************************************************************
* Function Name : WWDG_IRQHandler
* Description : This function handles WWDG interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WWDG_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : PVD_IRQHandler
* Description : This function handles PVD interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void PVD_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TAMPER_IRQHandler
* Description : This function handles Tamper interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TAMPER_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : RTC_IRQHandler
* Description : This function handles RTC global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RTC_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : FLASH_IRQHandler
* Description : This function handles Flash interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void FLASH_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : RCC_IRQHandler
* Description : This function handles RCC interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI0_IRQHandler
* Description : This function handles External interrupt Line 0 request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI0_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI1_IRQHandler
* Description : This function handles External interrupt Line 1 request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI1_IRQHandler(void)
{
EXTI_ClearITPendingBit(TOUCH_SCREEN_EXTI_LINE);
if(0x00 == touch_state)
{
dis_touch_init();
touch_state = 0x01;
touch_timer = 10;
}
else
{
touch_state = 0x00;
}
}
/*******************************************************************************
* Function Name : EXTI2_IRQHandler
* Description : This function handles External interrupt Line 2 request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI2_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI3_IRQHandler
* Description : This function handles External interrupt Line 3 request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI3_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI4_IRQHandler
* Description : This function handles External interrupt Line 4 request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI4_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel1_IRQHandler
* Description : This function handles DMA Stream 1 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel1_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel2_IRQHandler
* Description : This function handles DMA Stream 2 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel2_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel3_IRQHandler
* Description : This function handles DMA Stream 3 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel3_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel4_IRQHandler
* Description : This function handles DMA Stream 4 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel4_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel5_IRQHandler
* Description : This function handles DMA Stream 5 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel5_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel6_IRQHandler
* Description : This function handles DMA Stream 6 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel6_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : DMAChannel7_IRQHandler
* Description : This function handles DMA Stream 7 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void DMAChannel7_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : ADC_IRQHandler
* Description : This function handles ADC global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void ADC_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USB_HP_CAN_TX_IRQHandler
* Description : This function handles USB High Priority or CAN TX interrupts
* requests.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USB_HP_CAN_TX_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USB_LP_CAN_RX0_IRQHandler
* Description : This function handles USB Low Priority or CAN RX0 interrupts
* requests.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USB_LP_CAN_RX0_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : CAN_RX1_IRQHandler
* Description : This function handles CAN RX1 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void CAN_RX1_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : CAN_SCE_IRQHandler
* Description : This function handles CAN SCE interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void CAN_SCE_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI9_5_IRQHandler
* Description : This function handles External lines 9 to 5 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI9_5_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM1_BRK_IRQHandler
* Description : This function handles TIM1 Break interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM1_BRK_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM1_UP_IRQHandler
* Description : This function handles TIM1 overflow and update interrupt
* request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM1_UP_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM1_TRG_COM_IRQHandler
* Description : This function handles TIM1 Trigger and commutation interrupts
* requests.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM1_TRG_COM_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM1_CC_IRQHandler
* Description : This function handles TIM1 capture compare interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM1_CC_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM2_IRQHandler
* Description : This function handles TIM2 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM2_IRQHandler(void)
{
//GPIO_InitTypeDef GPIO_InitStructure;
//static u16 Seg_Old;
if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1);
}
else if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
if(0x00000000 != flash_timer)
{
flash_timer--;
}
if(0x00 != lcm_timer)
{
lcm_timer--;
}
if(0x0000 != touch_timer)
{
touch_timer--;
if(0x0000 == touch_timer)
{
if(0x01 == touch_state)
{
if(Bit_RESET == GPIO_ReadInputDataBit(TOUCH_SCREEN_PORT, TOUCH_SCREEN_Y0))
{
touch_state = 0x02;
}
else
{
touch_state = 0;
en_touch_init();
}
}
else
{
touch_state = 0;
en_touch_init();
}
}
}
}
}
/*******************************************************************************
* Function Name : TIM3_IRQHandler
* Description : This function handles TIM3 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM3_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : TIM4_IRQHandler
* Description : This function handles TIM4 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM4_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : I2C1_EV_IRQHandler
* Description : This function handles I2C1 Event interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void I2C1_EV_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : I2C1_ER_IRQHandler
* Description : This function handles I2C1 Error interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void I2C1_ER_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : I2C2_EV_IRQHandler
* Description : This function handles I2C2 Event interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void I2C2_EV_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : I2C2_ER_IRQHandler
* Description : This function handles I2C2 Error interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void I2C2_ER_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : SPI1_IRQHandler
* Description : This function handles SPI1 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SPI1_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : SPI2_IRQHandler
* Description : This function handles SPI2 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SPI2_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USART1_IRQHandler
* Description : This function handles USART1 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USART1_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USART2_IRQHandler
* Description : This function handles USART2 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USART2_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USART3_IRQHandler
* Description : This function handles USART3 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USART3_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : EXTI15_10_IRQHandler
* Description : This function handles External lines 15 to 10 interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void EXTI15_10_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : RTCAlarm_IRQHandler
* Description : This function handles RTC Alarm interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RTCAlarm_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name : USBWakeUp_IRQHandler
* Description : This function handles USB WakeUp interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USBWakeUp_IRQHandler(void)
{
}
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
思路
通过在TIM2中递减全局量flash_timer,在main函数中判断flash_timer是否为零,如果为零,则重新为其赋值,并翻转LED输出脚的状态
请问你的晶振频率是多少，SYSCLK是多少？
如何判断“慢至少10倍左右”，使用什么仪器？
说慢10倍左右只是凭感觉,
不好意思,因为我是初学,是先从GPIO开始的,还没有去学习时钟那部分,SYSCLK我也说不清楚
刚才去观察晶振的时候找到问题所在了,
实验板上的晶振是插在插座上的,晶振接触有问题的话就会跑得很慢
这就对了，STM32中有时钟失效的保护机制
当外部晶振失效时，STM32自动转为由内部的RC振荡器提供时钟，保证CPU能够正常运行。
STM32的时钟失效保护机制
STM32的时钟失效保护机制不错：当外部晶振失效时，STM32自动转为由内部的RC振荡器提供时钟，保证CPU能够正常运行；当外部晶振恢复时，STM32自动转为由外部晶振提供时钟；当然前提是，事先配置系统使用外部晶振作为时钟源。
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