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关于设置P0_6为下降沿中断触发一直不正确

user5281211
Expert 2000 points

P0SEL &=0xBF;// 1011 1111 //设置P0_6为普通IO口
P0DIR &=0xBF;// 1011 1111 //设置P0_6为输入
P0INP &=0xBF;// 1011 1111 //设置P0_6为上拉输入
P2INP &=0xDF;// 1101 1111 //P0_6
EA=1;
P0IE=1;//开P0组的中断
P0IEN |= 0x40; //0100 0000 设置P0_6为中断方式
PICTL |=0x01;//把P0这一组配置成下降沿触发

请问我以上代码哪个地方有问题

  • 0
    Guru 109510 points
    可以參考hal_key.c 裡面SW6的寫法、SW6用的是P0.1、你只要把BV(1)改成BV(6)就是P0.6下降沿触发
  • 0
    TI__Guru**** 252096 points

    建议您参考协议栈内的写法

    /* SW_6 is at P0.1 */
    #define HAL_KEY_SW_6_PORT P0
    #define HAL_KEY_SW_6_BIT BV(1)
    #define HAL_KEY_SW_6_SEL P0SEL
    #define HAL_KEY_SW_6_DIR P0DIR

    /* edge interrupt */
    #define HAL_KEY_SW_6_EDGEBIT BV(0)
    #define HAL_KEY_SW_6_EDGE HAL_KEY_FALLING_EDGE


    /* SW_6 interrupts */
    #define HAL_KEY_SW_6_IEN IEN1 /* CPU interrupt mask register */
    #define HAL_KEY_SW_6_IENBIT BV(5) /* Mask bit for all of Port_0 */
    #define HAL_KEY_SW_6_ICTL P0IEN /* Port Interrupt Control register */
    #define HAL_KEY_SW_6_ICTLBIT BV(1) /* P0IEN - P0.1 enable/disable bit */
    #define HAL_KEY_SW_6_PXIFG P0IFG /* Interrupt flag at source */