2020年02月13日 | STM8s103F3p 16位定时器 STM2

/************************************************************************************

/* MAIN.C file

 * 

 * Copyright (c) 2002-2005 STMicroelectronics

 */

//16位定时器2的中断方式

//周期为50ms

#include "stm8s103f.h"

main()

{

 //端口初始化

 PD_DDR=0x0f;

 PD_CR1=0x0f;

 PD_CR2=0x00;

 PD_ODR=0x0f;//端口D的前4位输出高电平

 //定时器初始化

 TIM2_IER=0x00;//禁止中断

 TIM2_EGR=0x01;//允许产生更新事件

 TIM2_PSCR=0x01;//计数器时钟=主时钟/128=2Mhz/2

        //相当于技术周期是1us

 TIM2_ARRH=0xC3;//设置重装载时候寄存器的高8位  

 TIM2_ARRL=0x50;//设置重装载时候寄存器的低8位 

         //0xc350=50000*1us=50ms

 TIM2_CNTRH=0xC3;//设定计数器的初始值高8位 

 TIM2_CNTRL=0x50;//设定计数器的初始值低8位

 TIM2_CR1=0x01;//b0=1；允许计数器工作

        //b1=0；允许更新

        //设置控制器，启动定时器

 TIM2_IER=0x01;//允许更新中断

 _asm("rim");//允许全局中断

 while (1)

 {}

}

/************************************************************************************

/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices

 * Copyright (c) 2007 STMicroelectronics

 */

#include "stm8s103f.h"

typedef void @far (*interrupt_handler_t)(void);

void TIM2_UPD_IRQHandler(void);

struct interrupt_vector {

 unsigned char interrupt_instruction;

 interrupt_handler_t interrupt_handler;

};

@far @interrupt void NonHandledInterrupt (void)

{

 /* in order to detect unexpected events during development, 

    it is recommended to set a breakpoint on the following instruction

 */

 return;

}

extern void _stext();     /* startup routine */

@near @interrupt void TIM2_UPD_IRQHandler(void)

{

  TIM2_SR1=0x00;//清楚更新标志

  PD_ODR^=0x0f;

}

struct interrupt_vector const _vectab[] = {

 {0x82, (interrupt_handler_t)_stext}, /* reset */

 {0x82, NonHandledInterrupt}, /* trap  */

 {0x82, NonHandledInterrupt}, /* irq0  */

 {0x82, NonHandledInterrupt}, /* irq1  */

 {0x82, NonHandledInterrupt}, /* irq2  */

 {0x82, NonHandledInterrupt}, /* irq3  */

 {0x82, NonHandledInterrupt}, /* irq4  */

 {0x82, NonHandledInterrupt}, /* irq5  */

 {0x82, NonHandledInterrupt}, /* irq6  */

 {0x82, NonHandledInterrupt}, /* irq7  */

 {0x82, NonHandledInterrupt}, /* irq8  */

 {0x82, NonHandledInterrupt}, /* irq9  */

 {0x82, NonHandledInterrupt}, /* irq10 */

 {0x82, NonHandledInterrupt}, /* irq11 */

 {0x82, NonHandledInterrupt}, /* irq12 */

 {0x82, (interrupt_handler_t)TIM2_UPD_IRQHandler}, /* irq13 */

 {0x82, NonHandledInterrupt}, /* irq14 */

 {0x82, NonHandledInterrupt}, /* irq15 */

 {0x82, NonHandledInterrupt}, /* irq16 */

 {0x82, NonHandledInterrupt}, /* irq17 */

 {0x82, NonHandledInterrupt}, /* irq18 */

 {0x82, NonHandledInterrupt}, /* irq19 */

 {0x82, NonHandledInterrupt}, /* irq20 */

 {0x82, NonHandledInterrupt}, /* irq21 */

 {0x82, NonHandledInterrupt}, /* irq22 */

 {0x82, NonHandledInterrupt}, /* irq23 */

 {0x82, NonHandledInterrupt}, /* irq24 */

 {0x82, NonHandledInterrupt}, /* irq25 */

 {0x82, NonHandledInterrupt}, /* irq26 */

 {0x82, NonHandledInterrupt}, /* irq27 */

 {0x82, NonHandledInterrupt}, /* irq28 */

 {0x82, NonHandledInterrupt}, /* irq29 */

};