74hc165-shift-reg-input.ino Copy (2) - Wokwi ESP32, STM32, Arduino Simulator

#include <stdio.h>
#include <stdio.h>
#include <math.h>
#include<string.h>
#include <LiquidCrystal_I2C.h> // Library for LCD

LiquidCrystal_I2C lcd(0x27, 16, 2); 

int count;
int ss;
const int inputPin = 5;
const int debounceDelay = 10;


//74HC165
const int dataPin = 2;   /* Q7 */
const int clockPin = 3;  /* CP */
const int latchPin = 4;  /* PL */

const int numBits = 16;   /* Set to 8 * number of shift registers */



//74HC595
#define DATA_PIN  8  // Pin connected to DS of 74HC595
#define LATCH_PIN 9  // Pin connected to STCP of 74HC595
#define CLOCK_PIN 10 // Pin connected to SHCP of 74HC595

// How many of the shift registers
#define NUM_SHIFT_REGS 2

const uint8_t numOfRegisterPins = NUM_SHIFT_REGS * 8;

bool registers[numOfRegisterPins];

float out ,out1;

void setup() {
  



  //74hc165
  Serial.begin(115200);
  pinMode(dataPin, INPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);

  //74hc595
  pinMode(DATA_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
  clearRegisters();
  writeRegisters();
  


  lcd.init(); // initialize the lcd
  lcd.backlight();
  pinMode(inputPin, INPUT);
}

int flag = 1;

void loop() {

  

  lcd.clear();                 // clear display
  lcd.setCursor(0, 0);         // move cursor to   (0, 0)
  lcd.print("Arduino");        // print message at (0, 0)

  delay(100);                 // display the above for two seconds





  // Step 1: Sample

  

  delay(100);


  while(flag){
  int bits[numBits];
  digitalWrite(latchPin, LOW);
  digitalWrite(latchPin, HIGH);

  // Step 2: Shift
  Serial.print("Bits: ");
  for (int i = 0; i < numBits; i++) {
    int bit = digitalRead(dataPin);
    bits[i] = bit;
    if (bit == HIGH) {
      Serial.print("1");
    } else {
      Serial.print("0");
    }
    digitalWrite(clockPin, HIGH); // Shift out the next bit
    digitalWrite(clockPin, LOW);
  }

  Serial.println();
  delay(100);
  Serial.println("//////");
  Serial.println(bits[0]);
  Serial.println(bits[1]);
  Serial.println(bits[2]);
  Serial.println(bits[3]);
  Serial.println(bits[4]);
  Serial.println(bits[5]);
  Serial.println(bits[6]);
  Serial.println(bits[7]);




int decimalValue = 0;



for (int i = 0; i < numBits; i++) {
  decimalValue += bits[i] * pow(2, numBits - i - 1);
}


Serial.print("\nDecimal value: ");
Serial.println(decimalValue);
out = decimalValue * (5.0/252.0);
out1 = decimalValue * (5.0/4092.0);
Serial.println(out);
if(debounce(inputPin))
  {
        count++;
  }
//显示1-5是八位的1-5V数字量，显示6-10是十二位1-5V的数字量，
switch (count)
{
  case 1:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, LOW);
    setRegisterPin(3, LOW);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, HIGH);    
    setRegisterPin(6, LOW);
    setRegisterPin(7, LOW); 
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 2:
    setRegisterPin(0, LOW);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, LOW);
    setRegisterPin(4, LOW);
    setRegisterPin(5, HIGH);    
    setRegisterPin(6, HIGH);
    setRegisterPin(7, LOW); 
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 3:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, LOW);
    setRegisterPin(2, LOW);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, LOW);    
    setRegisterPin(6, LOW);
    setRegisterPin(7, HIGH); 
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 4:
    setRegisterPin(0, LOW);
    setRegisterPin(1, LOW);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, LOW);
    setRegisterPin(5, LOW);    
    setRegisterPin(6, HIGH);
    setRegisterPin(7, HIGH); 
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 5:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, HIGH);    
    setRegisterPin(6, HIGH);
    setRegisterPin(7, HIGH); 
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 6:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, LOW);
    setRegisterPin(3, LOW);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, HIGH);    
    setRegisterPin(6, LOW);
    setRegisterPin(7, LOW);
    setRegisterPin(8, HIGH);
    setRegisterPin(9, HIGH);
    setRegisterPin(10, LOW);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 7:
    setRegisterPin(0, LOW);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, LOW);
    setRegisterPin(4, LOW);
    setRegisterPin(5, HIGH);
    setRegisterPin(6, HIGH);    
    setRegisterPin(7, LOW);
    setRegisterPin(8, LOW);
    setRegisterPin(9, HIGH);
    setRegisterPin(10, HIGH);
    setRegisterPin(11, LOW);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 

    writeRegisters();
  break;
  case 8:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, LOW);
    setRegisterPin(2, LOW);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, LOW);
    setRegisterPin(6, LOW);
    setRegisterPin(7, HIGH);
    setRegisterPin(8, HIGH);    
    setRegisterPin(9, LOW);
    setRegisterPin(10, LOW);
    setRegisterPin(11, HIGH);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;
  case 9:
    setRegisterPin(0, LOW);   //低位
    setRegisterPin(1, LOW);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, LOW);
    setRegisterPin(5, LOW);
    setRegisterPin(6, HIGH);
    setRegisterPin(7, HIGH);    
    setRegisterPin(8, LOW);
    setRegisterPin(9, LOW);
    setRegisterPin(10, HIGH);
    setRegisterPin(11, HIGH); 
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW);   //高位
    writeRegisters();
  break;
  case 10:
    setRegisterPin(0, HIGH);
    setRegisterPin(1, HIGH);
    setRegisterPin(2, HIGH);
    setRegisterPin(3, HIGH);
    setRegisterPin(4, HIGH);
    setRegisterPin(5, HIGH);    
    setRegisterPin(6, HIGH);
    setRegisterPin(7, HIGH); 
    setRegisterPin(8, HIGH);
    setRegisterPin(9, HIGH);
    setRegisterPin(10, HIGH);
    setRegisterPin(11, HIGH);
    setRegisterPin(12, LOW);
    setRegisterPin(13, LOW);    
    setRegisterPin(14, LOW);
    setRegisterPin(15, LOW); 
    writeRegisters();
  break;

}


if (count == 1 || count == 6)  ss = 1;   
if (count == 2 || count == 7)  ss = 2;     
if (count == 3 || count == 8)  ss = 3;   
if (count == 4 || count == 9)  ss = 4;     
if (count == 5 || count == 10)  ss = 5;  

if (count>10){
    count =0;

  }




delay(100);
lcd.clear();                 // clear display
lcd.setCursor(0, 0);         // move cursor to   (0, 0)
lcd.print(decimalValue);        // print message at (0, 0)
lcd.setCursor(0, 1);  
lcd.print(out);  
lcd.setCursor(6, 0);         // move cursor to   (0, 0)
lcd.print(decimalValue);        // print message at (0, 0)
lcd.setCursor(6, 1);  
lcd.print(out1); 
lcd.setCursor(13, 0);         // move cursor to   (0, 0)
lcd.print(count); 
lcd.setCursor(13, 1);         // move cursor to   (0, 0)
lcd.print(ss);
lcd.setCursor(15, 1);         // move cursor to   (0, 0)
lcd.print("V"); 
delay(100);      

 }

}



/*
int bits[numBits];

// Step 1: Load
digitalWrite(latchPin, LOW);
digitalWrite(latchPin, HIGH);

// Step 2: Shift
Serial.print("Bits: ");
for (int i = 0; i < numBits; i++) {
  int bit = digitalRead(dataPin);
  bits[i] = bit;
  if (bit == HIGH) {
    Serial.print("1");
  } else {
    Serial.print("0");
  }
  digitalWrite(clockPin, HIGH); // Shift out the next bit
  digitalWrite(clockPin, LOW);
}

// Convert binary to decimal
int decimalValue = 0;
for (int i = 0; i < numBits; i++) {
  decimalValue += bits[i] * pow(2, i);
}

Serial.print("\nDecimal value: ");
Serial.println(decimalValue);
delay(1000);



*/
boolean debounce(int pin)
{
  boolean state;
  boolean previousState;
  previousState = digitalRead(pin);
  for(int counter=0;counter<debounceDelay; counter++)
  {
    delay(1);
    state = digitalRead(pin);
    if(state != previousState)
    {
      counter = 0;
      previousState = state;

    }

  }
    return state;



}


void clearRegisters() {
  // Reset all register pins
  for (int i = numOfRegisterPins - 1; i >= 0; i--) {
    registers[i] = LOW;
  }
}

void setRegisterPin(int index, int value) {
  // Set an individual pin HIGH or LOW
  registers[index] = value;
}

void writeRegisters() {
  // Set and display registers
  digitalWrite(LATCH_PIN, LOW);

  for (int i = numOfRegisterPins - 1; i >= 0; i--) {
    digitalWrite(CLOCK_PIN, LOW);
    digitalWrite(DATA_PIN, registers[i]);
    digitalWrite(CLOCK_PIN, HIGH);
  }

  digitalWrite(LATCH_PIN, HIGH);
}