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so what work code now?

when i compile it cannot work

This receive xbee code. Why when I want to receive char 'aa' cannot be successful (x == 'a') ?

#include <18f4620.h>
#fuses HS,NOLVP,NOWDT,NOPROTECT
#use delay(clock=20000000) ...

Hi:

I connected a LM35 temperature sensor to my PIC16F877A MCU to take temperature readings. The following is my code:

#include <16F877A.h>
#device *=16
#device ADC=10
#include < ...

I'm sorry. I not mean function but how to write coding.

#include <16F877.H>
#device adc=8
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=4000000)
#use rs232 ...

Thanks. How to make code that have initial value for port analog a0, then when port a0 change make led bright? Then if any other change same happen. I don't know what function I must use.

Here's a demo program that shows how to display the A/D voltage
on the LCD, from 0 volts to 5.00 volts.

#include <16F877.H>
#device adc=10
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, ...

This is the line that does the voltage scaling:

volts = (float)(adc_value * 5)/1023.0;

Mathematically it is:

Volts = ADCcounts * FullscaleVolts / FullscaleCounts

So if you want to change ...

Here's a demo program that shows how to display the A/D voltage
on the LCD, from 0 volts to 5.00 volts.

#include <16F877.H>
#device adc=10
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, ...