Search found 76 matches

Thanks for your attention.
I did it and it worked. I define a variable as signed int32 that supports -32760 to 32760. Then by "type casting", I did subtraction as you see.
Thanks again.

Hi
thank you
I did it
delta=((signed int32 )input- (signed int32 )pre_in);

best regards

Hi again
I read two values on RS232 Port as "input" and "step".
then last "input" value that stored on memory on previous level, is loaded as "pre_in" .then ...

Dear RF_Developer
this is my function and definitions:

signed int16 pre_in,input,step,delta;
unsigned int16 step_in,pre_step;
signed int8 buffer[4];
int1 start_flag=0,int_flag=0,cal_fla ...

Hi
I make a program with PIC16f877a. In one of functions when I subtract two values (for example : delta=32760-(-32760)) its result is odd because its result is -16.
delta=32760-(-32760)=-16

#in ...

Hi
I want to make a look up table with 201 numbers. By CONST definition I made it but only 128 numbers is returned in main program. Please help me about maximum of look up table's elements.
My chip ...

Dear SherpaDoug
You're right. Thanks alot. I used your idea and my fault fixed.

best wishes

Hi
I have a question about RS232 communication. I use the #RDA_int and when
I receive a character (for example 'd') on this port I send an answer to
sender(PC) and wait to receive next byte. But P ...

Hi
Dear Ttelmah thanks for help.
I want to get an analog value every 400us. I want to read converted exactly after convertion because I need 4 real samples to estimate a harmonic of input signal by ...

Hi
this is a part of my code:

#include <16f877a.h>
#FUSES XT,NOWDT,PUT,BROWNOUT,NOLVP,HS
#device ADC=10
#use delay (clock=16000000)
#include <math.h>
#include <H:\P ...

Hi
I've maked a program that uses an Interrupt subroutine(AD_isr).
I defined a variable:

static int8 counter;

I want to increase this variable in my AD_isr when it occurs. But it doesn't work. ...

Hi again
I tried on many ways but all of them were wasteful.
when I changed a command in device setup it worked.
the false command :

setup_spi(SPI_MASTER|SPI_H_TO_L|SPI_XMIT_L_TO_H|SPI_CLK_D ...

Hi again

Help please...I can't get a valuable response from PCM56p. I tested any condition. I also checked all pins and wirings. I used the schematic that is mentioned in datasheet. (NOTE: ...

Dear Ttelmah
thanks for your attention but I did what you siad and it didnt work.(output always is 0 volt)
by PCM56 datasheet it is necessary to make a delay(at least a cycle)
when LE(latch enable) ...

Hi
Did anybody work with PCM56p? I tried to use it and I couldn't get a true voltage on its output. I use a PIC16f877a with a SPI communication too.(crystal: 4 MHz).
I don't know what I do. This is ...