من برنامه شما رو از لحاظ کار کردن چک نکردم ولی چند مورد اشتباه دیدم که فکر میکنم اگه اینجوری فایل main.c شما باشه درست کار کنه:
کد:
#include "stm32f10x.h"
#include <stdio.h>
//#include "lcd4bit.h"
GPIO_InitTypeDef GPIO_InitStructure;
int a=0;
//int timerValue;
//char s[16];
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
int main(void){
/********************** GPIO configuration*********************************/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB1Periph_TIM2, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//**************config NVIC************************
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//**************timer config*****************
TIM_TimeBaseStructure.TIM_Period = 1000; //
TIM_TimeBaseStructure.TIM_Prescaler = 36000 - 1; //
TIM_TimeBaseStructure.TIM_ClockDivision = 1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* TIM IT enable: for overflow */
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
/* TIM2 enable */
TIM_Cmd(TIM2, ENABLE);
while(1);//loop : when we dont have any intrrupt , thise code runing !
}
/***************** Timing ovf function********************* */
void TIM2_IRQHandler(void)
{
a++;// with each interrupt , a=a +1
// timerValue = TIM_GetCounter(TIM2);
// sprintf(s,"input:%d",timerValue);
// set_cursor(1,1);
// lcd_putsf(s);
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);//reset timer flag
}
if (a>=5)// each 5 second , pinD1 toggled !
{
GPIOA->ODR ^= GPIO_Pin_2;}// toggle code
if (a>5){
a=0;}
}