mt2523 General GPIO can be used as keypad pin？
时间：10-02
整理：3721RD
点击：
1.No, keypad driver only support hardware detect key, only use the special GPIO which have KEYPAD mode to detect key.
2、The keypad column pins are GPIO18~20, the row pins are GPIO21~23.
3、When use keypad ， you should ensure at least one column and one row.
4、If you want to use general GPIO as keypad , you cannot use hardware keypad module to detect key, and mustachieve keypad scan flow by your own software.
2、The keypad column pins are GPIO18~20, the row pins are GPIO21~23.
3、When use keypad ， you should ensure at least one column and one row.
4、If you want to use general GPIO as keypad , you cannot use hardware keypad module to detect key, and mustachieve keypad scan flow by your own software.