【外设】74HC595移位寄存器
一、管脚图：http://www.arduino.cn/forum.php?mod=image&aid=22075&size=300x300&key=79334414bd5a6aa4&nocache=yes&type=fixnonehttp://www.arduino.cn/forum.php?mod=image&aid=22076&size=300x300&key=02f10a04e09803bd&nocache=yes&type=fixnone
二、真值表：
http://www.arduino.cn/forum.php?mod=image&aid=22077&size=300x300&key=4556e882718e4a58&nocache=yes&type=fixnone
三、电路图
http://www.arduino.cn/forum.php?mod=image&aid=22078&size=300x300&key=7d96aade418e0d15&nocache=yes&type=fixnone
放大的图：
附上代码：
/*define pin*/
#define SCLR_PIN 2
#define SI_PIN 3
#define SCK_PIN 4
#define RCK_PIN 5
#define OE_PIN 6
/*define the map of value 0-9*/
#define NUM_VAL 11
int val= {
0xDE,//0
0x06,//1
0xEC,//2
0xAE,//3
0x36,//4
0xBA,//5
0xFA,//6
0x0E,//7
0xFE,//8
0xBE,//9
0x01,//dot
};
/*define the function of display val*/
void disVal(int val);
void setup() {
// put your setup code here, to run once:
pinMode(SCLR_PIN, OUTPUT);
pinMode(SI_PIN, OUTPUT);
pinMode(SCK_PIN, OUTPUT);
pinMode(RCK_PIN, OUTPUT);
pinMode(OE_PIN, OUTPUT);
return;
}
void loop() {
digitalWrite(OE_PIN, LOW);
// put your main code here, to run repeatedly:
for(int i = 0; i < NUM_VAL; i++ )
{
disVal(val);
//disVal(0xDE);
delay(1000);
}
return;
}
void disVal(int val)
{
//set RCK to Low
digitalWrite(RCK_PIN, LOW);
//clear SHIFT Story
digitalWrite(SCLR_PIN, LOW);
digitalWrite(SCLR_PIN, HIGH);
//set the val to SHIFT Story
shiftOut(SI_PIN, SCK_PIN, MSBFIRST, val);
//set RCK to HIGH
digitalWrite(RCK_PIN, HIGH);
return;
}
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