shiftOut

位移输出函数，输入value数据后会自动把数据移动分配到8个并行输出端

语法

 void shiftOut(uint8 dataPin, uint8 clockPin, uint8 bitOrder, uint8 value)

参数

• dataPin 数据引脚

• clockPin 时钟引脚

• bitOrder 移位的顺序，MSBFIRST 或 LSBFIRST

• value 数据

返回值

无

示例

uint16 data = 500;
shiftOut(dataPin, clockPin, MSBFIRST, (data >> 8));
shiftOut(dataPin, clockPin, MSBFIRST, data);


data = 500;
shiftOut(dataPin, clockPin, LSBFIRST, data);
shiftOut(dataPin, clockPin, LSBFIRST, (data >> 8));				
			

应用示例：74HC595

int latchPin = 8;
int clockPin = 12;
int dataPin = 11;

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
}

void loop() {
  for (int j = 0; j < 256; j++) {
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, LSBFIRST, j);
    digitalWrite(latchPin, HIGH);
    delay(1000);
  }
}				
			

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