Use the ADC of the PIC 16F887 microcontroller and the LM35 sensor to measure the temperature and display it on 3 led 7 segments common anode

• Requirements: Use the ADC of the PIC16F887 microcontroller and the LM35 sensor to measure the temperature displayed on 3 led 7 segments common anode using 3 ports, only displaying units, tens and hundreds. Use a reference voltage source VREF+ connected to VDD with 5V and VREF- connected to a VSS source of 0V
•  Circuit diagram on Proteus simulation software

Figure 1. Circuit diagram for measuring temperature using PIC16F887 displayed on 3 leds directly

• Main program:

File: main.c

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#INCLUDE<TV_16F887.C>

UNSIGNED INT16 KQADC;

UNSIGNED INT J,MATRAM;

VOID HIEN_THI()

{

   MATRAM = MA7DOAN[KQADC/100];

   IF (MATRAM == 0XC0) MATRAM=0XFF;

   OUTPUT_B(MA7DOAN[KQADC%10]);

   OUTPUT_D(MA7DOAN[KQADC/10%10]);

   OUTPUT_C(MATRAM);

}

VOID MAIN()

{

   SET_TRIS_B(0x00); SET_TRIS_D(0x00);

   SET_TRIS_C(0x00); SET_TRIS_A(0xFF);

   SETUP_ADC(ADC_CLOCK_DIV_2);

   SETUP_ADC_PORTS(SAN0);

   SET_ADC_CHANNEL(0);

   WHILE(TRUE)

   {

      KQADC=0;

      FOR (J=0; J<200; J++)

      {

         KQADC=KQADC+READ_ADC();

         DELAY_MS(1);

      }

      KQADC= KQADC /2.046;

      KQADC=KQADC/200;

      HIEN_THI();

   }

}

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• TV_16F887.c Library:

File: TV_16F887.c

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#INCLUDE <16F887.H>

#DEVICE ADC=10

#FUSES NOWDT,PUT,HS,NOPROTECT,NOLVP

#USE DELAY(CLOCK=20M)

CONST UNSIGNED CHAR MA7DOAN [10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,

0x80,0x90};

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Link download: https://drive.google.com/file/d/1AjovHx2SldZukjRX2YPmwIbwlxy7vmaT/view