arduino宏的应用实例2--用宏暴力处理矩阵键盘 （转）

#define readMatrixKey(rowPin,columnPin,onTrigger,onPop) do{\
    pinMode(columnPin,INPUT_PULLUP);\
    pinMode(rowPin,OUTPUT);\
    static bool Trg = false;\
    static bool Cont = false;\
    static bool Pop = false;\
    static unsigned long timdel = millis();\
    if (millis() - timdel >= 20) {\
      bool ReadData = !digitalRead(columnPin);\
      Trg = ReadData & (ReadData ^ Cont); \
      Pop = Cont != ReadData & !Trg; \
      Cont = ReadData; \
      if (Trg) {\
        onTrigger;\
      }\
      if (Pop) {\
        onPop; \
      }\
      timdel = millis(); \
    }\
    pinMode(columnPin,INPUT);\
    pinMode(rowPin,INPUT);\
  } while (0)
void setup() {
  // put your setup code here, to run once:
  for (int i = 2; i < 10; i++)
  {
    pinMode(i, INPUT);
  }
  Serial.begin(9600);
}
 
void loop() {
  // put your main code here, to run repeatedly:
  readMatrixKey(2, 6,  Serial.println("2,6 PUSH"), Serial.println("2,6 POP"));
  readMatrixKey(2, 7,  Serial.println("2,7 PUSH"), Serial.println("2,7 POP"));
  readMatrixKey(2, 8,  Serial.println("2,8 PUSH"), Serial.println("2,8 POP"));
}
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