2019年12月27日 | STM8S105S4_PKT学习笔记（2） 外部中断

button-->PD7

Led -->PD0

main.c:

/* MAIN.C file

 * 

 * Copyright (c) 2002-2005 STMicroelectronics

 */

#include "stm8s207s6.h"

void Clock_Init(void)

{

CLK_SWCR |= 0x02;//使能切换机制

CLK_ECKR |= 0x01;//外部晶振使能

while(!(CLK_ECKR & 0x02));//等待HSE准备就绪

CLK_SWR  = 0xB4;//选择HSE为主时钟

CLK_CSSR |= 0x01;//时钟安全系统使能

}

void Gpio_Init(void)

{

PD_DDR |= 0x01;

PD_CR1 |= 0x01;

PD_CR2 |= 0x80;

}

void Exti_Init(void)

{

EXTI_CR1 |= 0x80;

}

main()

{

_asm("sim");

Clock_Init();

Gpio_Init();

Exti_Init();

_asm("rim");

while (1)

{

}

}

stm8_interrupt_vector.c:

/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices

 * Copyright (c) 2007 STMicroelectronics

 */

#include "stm8s207s6.h"

typedef void @far (*interrupt_handler_t)(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;

}

@far @interrupt void Exti_Interrupt (void)

{

/* in order to detect unexpected events during development, 

   it is recommended to set a breakpoint on the following instruction

*/

PD_ODR ^= 0x01;

return;

}

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

struct interrupt_vector const _vectab[] = {

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

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

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

};

效果：按下按键，灯亮，再次按下，灯灭