Difference between revisions of "PIC16F877A ADC on Starter Borad"

     
     
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    [[Category:Starter PIC16F877]]
    		 
    [[Category:Starter PIC16F877]]
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    In this tutorial we will see how to read the ADC values on PIC16f877A starter board.<br>
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    Starter board comes with on board POT connected to ADC0, same POT value will be read and transmitted on UART at 9600 baudrate.
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    <br><br>
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    =PIC16F877A ADC pins=
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    PIC16F877A has inbuilt 8channel 10-bit ADC. Below tables shows the ADC pin mapping.<br>
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    {| class="table table-striped table-hover table-condensed table-bordered"
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    |-class="info"
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    !Adc Channel || Pic16f877a Pin || Pin Function
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    |-
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    |0|| PA.0 || AN0
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    |-       
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    |1|| PA.1 || AN1
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    |-       
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    |2|| PA.2 || AN2/VREF-
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    |-       
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    |3|| PA.3 || AN3/VREF+
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    |-           
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    |4|| PA.5 || AN4
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    |-       
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    |2|| PE.0 || AN5
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    |-       
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    |3|| PE.1 || AN6
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    |-         
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    |4|| PE.2 || AN7
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    |}<br><br>
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    =Code=
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    Below is the sample code to read the ADC value of channel0 and sent it on UART at 9600 baud rate.<br>
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    As the POT is connected to ADC0, the values can be varied using this POT.
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    <html>
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    <script src="https://gist.github.com/sharanago/83a7537783383c8130576a79a493c87a.js"></script>
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    </html>
      
     
    [[File:Pic16f877aADC01.PNG]]<br><br>
    		 
    [[File:Pic16f877aADC01.PNG]]<br><br>
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    =Demo=
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    [[File:Pic16f877aADC00.gif]]<br><br>

    Latest revision as of 18:58, 2 May 2016

    In this tutorial we will see how to read the ADC values on PIC16f877A starter board.
    Starter board comes with on board POT connected to ADC0, same POT value will be read and transmitted on UART at 9600 baudrate.

    PIC16F877A ADC pins

    PIC16F877A has inbuilt 8channel 10-bit ADC. Below tables shows the ADC pin mapping.

    Adc Channel Pic16f877a Pin Pin Function
    0 PA.0 AN0
    1 PA.1 AN1
    2 PA.2 AN2/VREF-
    3 PA.3 AN3/VREF+
    4 PA.5 AN4
    2 PE.0 AN5
    3 PE.1 AN6
    4 PE.2 AN7


    Code

    Below is the sample code to read the ADC value of channel0 and sent it on UART at 9600 baud rate.
    As the POT is connected to ADC0, the values can be varied using this POT.

    #include "adc.h"
    #include "uart.h"
    int main()
    {
    int adcValue;
    ADC_Init(); /* Initialize the ADC module */
    UART_Init(9600); /* Initialize UART at 9600 baud rate */
    while(1)
    {
    adcValue = ADC_GetAdcValue(0); // Read the ADC value of channel zero
    UART_Printf("ADC0 Value:%4d \n\r",adcValue); // Send the value on UART
    }
    return (0);
    }
    view raw pic16f877a_ADC.c hosted with ❤ by GitHub

    Pic16f877aADC01.PNG

    Demo

    Pic16f877aADC00.gif

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