#include "TM1637.h"
#define clk 5
#define dio 6

TM1637 tm1637(clk,dio);

int numList[10] ={0,1,2,3,4,5,6,7,8,9};//0~9
int bitList[4] = {0,1,2,3};

int signal = A5;

int firstNum = 0;
int secondNum = 0;
int thirdNum = 0;
int fourthNum = 0;

void setup(){
    tm1637.init();
    tm1637.set();
    pinMode(signal,INPUT);
    Serial.begin(9600);
}

void loop(){
    int showNum = 0;
    int theBit = 0;
    int a5Signal = analogRead(signal);
   
    //取千位值
    int firstBit = a5Signal/1000;
    if(firstBit>=1){
        firstNum = numList[firstBit];
    }
    else {
        firstNum = numList[0];
    }

    //取百位值
    int secondBit = a5Signal%1000/100;
    if(secondBit>=1){
        secondNum = numList[secondBit];
    }
    else {
        secondNum = numList[0];
    }
    
    //取十位值
    int thirdBit = a5Signal%1000%100/10;
    if(thirdBit>=1){
        thirdNum = numList[thirdBit];
    }
    else {
        thirdNum = numList[0];
    }
        
    //取个位值
    int fourthBit = a5Signal%1000%100%10;
    if(fourthBit>=1){
        fourthNum = numList[fourthBit];
    }
    else {
        fourthNum = numList[0];
    }
    Serial.println(a5Signal);
 
    tm1637.display(bitList[0],firstNum);
    tm1637.display(bitList[1],secondNum);
    tm1637.display(bitList[2],thirdNum);
    tm1637.display(bitList[3],fourthNum);

    delay(500);
    
 }