// Define Connections to 74HC165
// PL pin 1
int load = 7;
// CE pin 15
int clockEnablePin = 4;
// Q7 pin 7
int dataIn = 5;
// CP pin 2
int clockIn = 6;
int led1 = 8;
int led2 = 9;
int led3 = 10;
int led4 = 11;
void setup()
{
// Setup Serial Monitor
Serial.begin(9600);
// Setup 74HC165 connections
pinMode(load, OUTPUT);
pinMode(clockEnablePin, OUTPUT);
pinMode(clockIn, OUTPUT);
pinMode(dataIn, INPUT);
digitalWrite(led1,1);
delay(250);
digitalWrite(led2,1);
delay(250);
digitalWrite(led1,0);
delay(250);
digitalWrite(led2,0);
}
void loop()
{
// Write pulse to load pin
digitalWrite(load, LOW);
delayMicroseconds(5);
digitalWrite(load, HIGH);
delayMicroseconds(5);
// Get data from 74HC165
digitalWrite(clockIn, HIGH);
digitalWrite(clockEnablePin, LOW);
byte incoming = shiftIn(dataIn, clockIn, LSBFIRST);
digitalWrite(clockEnablePin, HIGH);
// Print to serial monitor
Serial.print("Pin States:\r\n");
Serial.println(incoming, BIN);
// delay(20);
if(incoming==0b11101111)
{
digitalWrite(led1,1);
}
else
{
digitalWrite(led1,0);
}
}