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[PIC] AC parameters reading by ADC & serial comunication using pic16F877A & micro c

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vir_paksh@yahoo.co.in

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Can any body help me? both in software & hard ware changes
to read ac parameters like voltage & current. Now my program & hardware reads DC parameters fantastically but I need to read ac parameters. And I need modification to my program i.e. 1.port D have to switched to high(FF), when ADC_Read(0)>265 and ADC_Read(0)<215. 2.port D have to switched to high(FF) when ADC_Read(0) to ADC_Read(4) >265 and 3.port D must be 0 for 215<ADC_Read(0)<265. And port D must be 0 for ADC_Read(0) to ADC_Read(4) <265. Program & proteus attached.

My program is as below:


Code C - [expand]
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char message9[] = "VIRUPAKSHA SB";
char message10[] = "V";
char message11[] = "A";
char message12[] = "'C";
 
char message1[] = "IN PP:";
   char message2[] = "OUT PP:";
  char message3[] = "R-PH CNT:";                //
   char message4[] = "Y-PH CNT:";
  char message5[] = "B-PH CNT:";
  char message6[] = "DC VOLT:";
   char message7[] = "BAT CH CNT:";
    char message8[] = "HEAT:";
 char *temp = "0000";
 unsigned int ADC_Value;
 void main() {
  //ANSEL = 0b00000000; // RA2/AN2 is analog input
  ADCON0 = 0b00001000; // Analog channel select @ AN2
   ADCON1 = 0b10000000;
 // CMCON0 = 0x07 ; // Disbale comparators
  TRISC = 0b00000000; // PORTC All Outputs
  TRISA = 0b11111111; // PORTA All Outputs, Except RA3 and RA2
   UART1_Init(9600); // baud rate at 9600bps
 delay_ms(100);
 
  UART1_Write_Text(message9);
  UART1_Write('\r');
 
 Delay_ms(2000);
 
  do {
 
   adc_value = ADC_Read(0);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message1);
  UART1_Write_Text(temp);
  UART1_Write_Text(message10);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(1);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message2);
  UART1_Write_Text(temp);
 UART1_Write_Text(message10);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(2);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message3);
  UART1_Write_Text(temp);
  UART1_Write_Text(message11);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(3);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message4);
  UART1_Write_Text(temp);
  UART1_Write_Text(message11);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(4);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message5);
  UART1_Write_Text(temp);
  UART1_Write_Text(message11);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(5);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message6);
  UART1_Write_Text(temp);
 UART1_Write_Text(message10);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(6);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message7);
  UART1_Write_Text(temp);
  UART1_Write_Text(message11);
  UART1_Write('\r');
   Delay_ms(2000);
   adc_value = ADC_Read(7);
   temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
   temp[1] = (adc_value/100)%10 + 48;
   temp[2] = (adc_value/10)%10 + 48;
   temp[3] = adc_value%10 + 48;
 UART1_Write_Text(message8);
  UART1_Write_Text(temp);
  UART1_Write_Text(message12);
  UART1_Write('\r');
   Delay_ms(2000);
  } while(1);
 }

 

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