简洁高效的ESP32处理矩阵键盘代码…

/**********矩阵键盘IO映射***************
  3(9)  1(8)   5(4)
                    2(13)
                    7(12)
                    6(18)
                    4(19)
 *************************************/
uint8_t Trg=0,Cont=0;
void Key_Task(void)
{
  uint8_t ReadData,ColumnData,RowData;
  pinMode(9,INPUT_PULLUP);pinMode(8,INPUT_PULLUP);pinMode(4,INPUT_PULLUP);//列线输入
  pinMode(13,OUTPUT);pinMode(12,OUTPUT);pinMode(18,OUTPUT);pinMode(19,OUTPUT);//行线
  //列高行低
  digitalWrite(13,0);digitalWrite(12,0);digitalWrite(18,0);digitalWrite(19,0);
  ColumnData =0x01<<8 | (digitalRead(9)<<6) | (digitalRead(8)<<5) | (digitalRead(4)<<4); //读取列线

  pinMode(9,OUTPUT);pinMode(8,OUTPUT);pinMode(4,OUTPUT);//列线
  pinMode(13,INPUT_PULLUP);pinMode(12,INPUT_PULLUP);pinMode(18,INPUT_PULLUP);pinMode(19,INPUT_PULLUP);//行线输入
  //列低行高
  digitalWrite(9,0);digitalWrite(8,0);digitalWrite(4,0);
  RowData = (digitalRead(19)<<3) | (digitalRead(18)<<2) | (digitalRead(12)<<1) | digitalRead(13); //读取行线

  ReadData=(ColumnData | RowData)^0XFF;
  Trg = ReadData&(ReadData^Cont);	//记录短按键值
  Cont = ReadData;	//记录长按键值

/****************矩阵键码表***********
  1-0X41  	2-0X21 	3-0X11
  4-0X42	5-0X22 	6-0X12
  7-0X44	8-0X24 	9-0X14
  *-0X48	0-0X28 	#-0X18
************************************/
  //按键任务区
  if(Trg == 0x48){ //*按下
    
  }
}