Teach you how to use “Call ID Module”

The core IC of this module is HT9032D，when someone is calling ( current telephone must show the calling number), model serial port(TTL level) will output hexadecimal data,the data include date/time/phone number ect important information. Data indicate: have call, the serial output hexadecimal will appear ox55 for more than ten times, then appear ox04, after the data of ox04 is the data length/date/time/phone number/BCC byte.

Arduino UNO x1
Call ID Module x1
LCD1602 A Shield x1
Screw Shield x1（If it is LCD1602 B Shield，can not need it）
Male – female Dupont Line x3

Call ID Module +5V –> Arduino 5V

Call ID Module GND –> Arduino GND

Call ID Module RXD –> Arduino RXD

#include <LiquidCrystal.h>
#define LCD_BACKLIGHT_PIN 10
LiquidCrystal lcd(8, 13, 9, 4, 5, 6, 7);
 
static int Ht9032_flag=0;
static int Ht9032_i=0;
static char Ht9032_code[25];
static int Ht9032_codeleng=0;
char SBUF0 = 0;
 
void setup()
{
  pinMode(10,OUTPUT);
  digitalWrite( LCD_BACKLIGHT_PIN, LOW ); 
  delay(200);
  lcd.begin(16, 2);
  lcd.clear();
  digitalWrite( LCD_BACKLIGHT_PIN, HIGH); 
  lcd.setCursor(0,0);
  lcd.print("Test Code V1.0"); 
  lcd.setCursor(0,1);
  lcd.print("Waiting Caller..");
 
  Serial.begin(1200);
  delay(100);
}
 
void loop()
{
  Ht9032_get();
}
 
void Serial_display()
{
  for(int i=1;i<Ht9032_codeleng+1;i++)
  {
    Serial.print(char(Ht9032_code[i]));
    Serial.print("/");
  }
}
 
void lcd_display()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("DATE:");
  lcd.print(char(Ht9032_code[1]));
  lcd.print(char(Ht9032_code[2]));
  lcd.print('/');
  lcd.print(char(Ht9032_code[3]));
  lcd.print(char(Ht9032_code[4]));
  lcd.print(" ");
  lcd.print(char(Ht9032_code[5]));
  lcd.print(char(Ht9032_code[6]));
  lcd.print(':');
  lcd.print(char(Ht9032_code[7]));
  lcd.print(char(Ht9032_code[8]));
 
  lcd.setCursor(0,1);
  lcd.print("NO.:");
 
  for(int i=9;i<Ht9032_codeleng+1;i++)
  {
     lcd.print(char(Ht9032_code[i]));
  }
}
 
void Ht9032_get()
{
  while (Serial.available() > 0)  
  {
  Serial.flush();
  SBUF0 = Serial.read();  
  switch(Ht9032_flag)
  {
    case 0x00:if (SBUF0==0x55)  
               {
                 Ht9032_flag=0x01;
                 Ht9032_i=0x01;
               }break;
 
    case 0x01:if (SBUF0==0x55) 
               {
                 Ht9032_i++;
               }                        
               else
               {
                 Ht9032_flag=0x00;
                 Ht9032_i=0x00;
        }
               if(Ht9032_i==0x0a)
               {
                 Ht9032_flag=0x02;
                 Ht9032_i=0x00;
               }break;
 
    case 0x02:if(SBUF0==0x04) 
          {
                Ht9032_flag=0x03;
              }
              else if(SBUF0==0x80)
              {
                Ht9032_flag=0x03;
               }break;
 
     case 0x03:Ht9032_codeleng = SBUF0; 
               Ht9032_i=0;
               Ht9032_code[Ht9032_i++]=Ht9032_codeleng;
               Ht9032_flag=0x04;                                        
               break;
 
    case 0x04:Serial.print(Ht9032_code[Ht9032_i-1],HEX);
              Ht9032_code[Ht9032_i++]=SBUF0;  
              if( Ht9032_i > Ht9032_codeleng+1 ) 
         {  
                //Serial_display();
                lcd_display();
            Ht9032_flag=0x00;
        Ht9032_i=0x00;                              
          }
              else
              { Ht9032_flag=0x04; }
          break;
     default:break;
   }
  }
}

1. First finish the connection of the wire according to the wire diagram.

2. Then copy the test code to Arduino IDE, then download the code