timer.c

STM32(Cortex-m3)定时中断 MDK 3.4

/*

                         \\\|///
                       \\  - -  //
                        (  @ @  )
+---------------------oOOo-(_)-oOOo-------------------------+
|                 智林STM32开发板试验程序                   |
|                  Timer1 定时器中断实验                    |
|                 刘笑然 by Xiaoran Liu                     |
|                        2008.4.16                          |
|                                                           |
|           智林测控技术研究所 ZERO research group          |
|                      www.the0.net                         |
|                             Oooo                          |
+-----------------------oooO--(   )-------------------------+
                       (   )   ) /
                        \ (   (_/
                         \_)     

*/
/*----------------------------------------------------------*\
 |  引入相关芯片的头文件                                    |
\*----------------------------------------------------------*/
#include <stdio.h>
#include <stm32f10x_lib.h>    // STM32F10x Library Definitions
#include "STM32_Init.h"       // STM32 Initialization
#include "TFT018.h"

int ledLight = 0;
/*----------------------------------------------------------*\
 | HARDWARE DEFINE                                          |
\*----------------------------------------------------------*/
#define LED             ( 1 << 5 )                // PB5: LED D2
/*----------------------------------------------------------*\
 | Timer1 Update Interrupt Handler                          |
\*----------------------------------------------------------*/
void TIM1_UP_IRQHandler (void) {

  if ((TIM1->SR & 0x0001) != 0) {                 // check interrupt source

	ledLight = ~ledLight;
	if( ledLight )
    	GPIOB->ODR &= ~LED;                           // switch on LED
	else
    	GPIOB->ODR |=  LED;                           // switch off LED

    TIM1->SR &= ~(1<<0);                          // clear UIF flag
 }
} // end TIM1_UP_IRQHandler
/*----------------------------------------------------------*\
 | MIAN ENTRY                                               |
\*----------------------------------------------------------*/
int main (void) {
  stm32_Init ();                                // STM32 setup
  LCD_Init();
  LCD_Clear_Screen(Blue);

  Font = 0;
  LCD_PutString(30,0,"STM32F 开发板",Cyan,Blue);
  LCD_PutString(25,16,"定时器中断实验",Red,Yellow);
  Font = 1;
  LCD_PutString(38,32,"Version 1.0",Green,Blue);
  Font = 0;
  LCD_PutString(10,94,"智林测控技术研究所",Yellow,Blue);
  LCD_PutString(36,111,"www.the0.net",Magenta,Blue);

  for(;;) {
  	}
  }
/*----------------------------------------------------------*\
 | END OF FILE                                              |
\*----------------------------------------------------------*/