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how to store data using PIC16F877A?

 
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matcobra



Joined: 14 Feb 2011
Posts: 8

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how to store data using PIC16F877A?
PostPosted: Sat Mar 26, 2011 1:22 am     Reply with quote
Hello, anyone can help me how to store data inside PIC? Currently I just made project about fruit indicator that show the parameter of sweetness/sourness fruit. So I need to store data that I already done test on the fruits. I hope anyone can help out how to figure my problems.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Sat Mar 26, 2011 1:52 pm     Reply with quote
See this thread. It has two example programs which show how to write
to the internal data eeprom in the PIC. The programs are for the 16F690
but they will also work with the 16F877A:
http://www.ccsinfo.com/forum/viewtopic.php?t=32722
matcobra



Joined: 14 Feb 2011
Posts: 8

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PostPosted: Mon Mar 28, 2011 10:50 am     Reply with quote
thks, I have read your link but I just get blur. How I must supposed to combine the coding from the link with my original coding?

my original coding:
Code:


#include <16F877A.h>
#device adc=10
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=10000000)

#include <lcd.c>

#define x input (pin_b0) // ph output
#define y input (pin_b1) // voltage output
//#define z input (pin_b2) // glucose output

void main()
{
int16 adc_value;
float value1;
float value2;
float volt;


lcd_init();

setup_adc_ports(AN0);
setup_adc(ADC_CLOCK_DIV_8);
set_adc_channel(0);

while(1)

{
value1=read_adc();
value2=(value1*5)/1023;
volt=value2*2 ;
 
   lcd_putc("\f----:FRUITi:----\n");
   delay_ms(3100);
 
   
if(x==1)
   {   
     if((volt>5.00)&&(volt<=10.00))
     
      {
      printf(lcd_putc,"T:SWEET   \n",);delay_ms(3200);
      printf(lcd_putc,"G:MANY    \n",);delay_ms(3200);}
     else if((volt>3.00)&&(volt<=5.00))
     {printf(lcd_putc,"T:SWEETSOUR      \n",);delay_ms(3200);
      printf(lcd_putc,"G:MEDIUM        \n",);delay_ms(3200);}
     else if((volt>0.00)&&(volt<=3.00))
     {printf(lcd_putc,"T:SOUR        \n",);delay_ms(3200);
        printf(lcd_putc,"G:LITTLE      \n",);delay_ms(3200);}
   }

if(y==1)
   {

   {
      printf(lcd_putc,"pH:%3.2f",volt);delay_ms(3200);}

   }


 }
}

ok, if I managed to do this, i want to ask, are the data will be save inside PIC?...or we need to used external memory card to save the data?... Can you explain my problems..I just get blur, do we need to used external memory card too if we can save data inside PIC...
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