CC2640中，矩阵键盘问题

使用2640的片子，

首先我开启了矩阵键盘读回行相应IO口的中断：

  PIN_setConfig(hKeyPins, PIN_BM_IRQ, Board_KEY_ROW0  | PIN_IRQ_BOTHEDGES);PIN_setConfig(hKeyPins, PIN_BM_IRQ, Board_KEY_ROW1  | PIN_IRQ_BOTHEDGES);PIN_setConfig(hKeyPins, PIN_BM_IRQ, Board_KEY_ROW2  | PIN_IRQ_BOTHEDGES);PIN_setConfig(hKeyPins, PIN_BM_IRQ, Board_KEY_ROW3  | PIN_IRQ_BOTHEDGES);

然后，在Board_key.c中的中断处理函数：Board_keyCallback中添加获取健值的代码，使用单列拉高的方式，

COL0{PIN_setOutputValue(hKeyPins, Board_KEY_COL1, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL2, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL0, 0);//拉低0列;PAW_Delay_ms(25);if(PIN_getInputValue(Board_KEY_ROW1) == 0){keysPressed |= KEY_UP;}if(PIN_getInputValue(Board_KEY_ROW2) == 0){keysPressed |= KEY_LEFT;}if(PIN_getInputValue(Board_KEY_ROW3) == 0){keysPressed |= KEY_DOWN;}}
//COL1{PIN_setOutputValue(hKeyPins, Board_KEY_COL0, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL2, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL1, 0);//拉低0列;PAW_Delay_ms(25);if(PIN_getInputValue(Board_KEY_ROW2) == 0){keysPressed |= KEY_SELECT;}if(PIN_getInputValue(Board_KEY_ROW3) == 0){keysPressed |= KEY_RIGHT;}}
//COL2{PIN_setOutputValue(hKeyPins, Board_KEY_COL0, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL1, 1);PIN_setOutputValue(hKeyPins, Board_KEY_COL2, 0);PAW_Delay_ms(25);if(PIN_getInputValue(Board_KEY_ROW1) == 0){keysPressed |= KEY_MUTE;}if(PIN_getInputValue(Board_KEY_ROW2) == 0){keysPressed |= KEY_VOLUME_UP;}if(PIN_getInputValue(Board_KEY_ROW3) == 0){keysPressed |= KEY_VOLUME_DOWN;}

但是 并没有成功。

请问2640的按键中断处理函数中是否能添加引脚处理？

Viki Shi：

可以，按键本身就是中断输入判断

fangchang he：

回复 Viki Shi:

hi,

我在Board_keyCallback;函数中开启了一个SWI定时器：Util_constructClock(&keyReadClock, Board_keyReadHandler,100, 0, false, 0);

static void Board_keyCallback(PIN_Handle hPin, PIN_Id pinId)
{keysPressed = 0;Util_startClock(&keyReadClock);if(value == 0x01)keysPressed |= KEY_UP;if(value == 0x02)keysPressed |= KEY_LEFT;if(value == 0x03)keysPressed |= KEY_DOWN;if(value == 0x12)keysPressed |= KEY_SELECT;if(value == 0x13)keysPressed |= KEY_RIGHT;if(value == 0x21)keysPressed |= KEY_DOWN;if(value == 0x22)keysPressed |= KEY_RIGHT;if(value == 0x23)keysPressed |= KEY_DOWN;Util_startClock(&keyChangeClock);
}

之后在Board_keyReadHandler;函数中使用轮询的方式读取矩阵键值：

static void Board_keyReadHandler(UArg a0)
{value = keyread();
}

现在问题是，只有第一次能发送健值；而之后都不会进入中断处理函数static void Board_keyCallback(PIN_Handle hPin, PIN_Id pinId)了，

请问是什么原因呢？