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I forgot to mention some of behavior while I was coding that program.

I normally use smart prox5 to burn ic.

Behavior: I take one New ic from bar and working with it.
I change program and write ...

Hello everyone,

I'm again with my problem.
Now I am working with pic18f4520.

I am using that ic for controlling generator.

I have power supply 48volt to 12volt by using ic3844 (smps) then 78 ...

Pin number
2,3,4,5

means i use +Vref pin also

anyway thanks nia for information
waiting for reply

Chip 18F4520
Compiler version 4.049
RA0,RA1,RA2,RA3 these pin are connected with analog sensing.
i thought that uc require time to convert ADC value .

thanks for the reply.

Misel

hi,
I'm again with my problem.
I can't solve it.

My simple program for read adc.
I use 100t0 ground for pull down.

And sense analog voltage.

My program

void adc_init()
{ ...

I have SmartproX5 for program the IC.
But it has no option for 16F1939.

And compiler PCW4.049 it has no device type 16F1939.
So I can't program that IC.

misel

Thanks gpsmikey
I want it in ccs

Misel

How can I program 16F1939.

I can't find any solution.

regards
Misel

still having problem with 18f4550
but not in 18f4520

thanks
regards Misel

Dear sir,
I'm still having problem.
Another thing I'm accessing two Dallas from two pins. I did it the easiest way just make two function and accessed it by calling

#include <ds18b20_1.c>
...

Dear sir thanks for the reply.
Yes firstly I tried in 18f4550.
But now for getting problem there I shift in 18f4520.

Now I'm using 18f4520 and oscillator is internal RC oscillator 8MHz.

Fuse ...

Yes sir I implemented that code you gave me.
But still having problem with 18f4550.

Now I change my ic and take 18f452 and use internal crystal and get 99.99% accurate. means temperature does not ...

Dear member again I'm in problem with 18f4520

My program works well in Proteus but not in real board.

I use common ds18b20 program and modified

/*-------1-wire definitions-------*/
#define O ...

Sorry PCM programmer. I will read datasheet carefully.

regards
misel

yes lcd is blinking
but still got no good news