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?