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標題: STM8外部中斷配置詳解 [打印本頁]
作者: jialinx    時間: 2015-9-14 12:56
標題: STM8外部中斷配置詳解
1：引用STM8 的中斷庫
  #include "stm8s_exti.h"
2：配置外部中斷的觸發管腳
GPIO_Init(LEDS_PORT,MB,GPIO_MODE_IN_FL_IT );
或者
GPIO_Init(LEDS_PORT,MB,GPIO_MODE_IN_PU_IT );
3:初始化中斷
EXTI_DeInit();
EXTI_SetTLISensitivity(EXTI_TLISENSITIVITY_RISE_ONLY);//下降沿觸發中斷
EXTI_SetExtIntSensitivity((EXTI_PORT_GPIOD),EXTI_SENSITIVITY_RISE_ONLY);

4：中斷服務子程序的配置
（1）外部定義中斷服務子程序
@far @interrupt void EXTI3 (void)
{
  disableInterrupts();
  counter ();
  enableInterrupts();
}
（2）聲明外部中斷子程序
extern void EXTI3 ();
（3）配置外部中斷子程序向量表
struct interrupt_vector const _vectab[] = {
{0x82, (interrupt_handler_t)_stext},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, EXTI3              },
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, TIM2_UPD_OVF_TRG_IRQHandler },
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, UART_RI            },
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
{0x82, NonHandledInterrupt},
};
注：在配置中斷實以上三部缺一不可







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