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Hi mcr1981,

I had the same problem using pic18f13k22. The problem was that i had to setup CCP2 before setup timer 2 in the main code, CCP2 would not work without it, a bug with that pic.
You said ...

HI MCR 1981,

I am no coding expert but i did pick up a few tips doing my project, i think to set up a PWM, you need to set up timer 2, it determines the PWM frequency,

using the formula
Period ...

Hi Mike & everybody,

Thanks for all your suggestions, I increased the sampling time of the xbee to its maximum 50ms and discovered an extra PIN was configured as a an analogue sample pin, so it ...

Hi Mike,

Okay. At 100RPM there is 6 samples per revolution, this will correspond to half a sin wave depending where the first sample was taken. ie from o to pie.

The ADC converter change this an ...

Hi Mike,

Thanks for your input, i am still working on the problem and am trying some of your suggestions, which make interesting reading.

I had an idea of an alternative solution. Considering t ...

Hi Mike, SherpaDoug,

Sorry for the late reply, Wednesday and Thursday are lecture and training full, so I haven't had a chance to reply until now.

Answers to original posts

1) Not entirely su ...

Hi Mike,

Sorry yes it is alot of information, to clarify.

1) The only input into the PIC is from the coordinator xbee. Tx/Rx Pin. A router xbee is connected to a flexiforce sensor via an OPAMP. ...

Hi All,

I have a general question regarding the best way to output a 10bit number on a PIC pin, the number is related to a force sensor voltage whose value changes every 10th of a second, voltage i ...

Ah thats a shame, i use CCS PIC C compiler. I have not got MPLAB setup, but maybe i should as it is very interesting to know how to solve future problems.
Thanks for the help.

Yes, that did work, Thanks for your help. I had a look at the .lst file. My first time looking at one. From what i have read, the .lst file is the assembly code the compiler uses to execute the progra ...

Hi,

I have being testing the other PWM, all work fine using the following code but if i set up CCP2 then all of the CCP stop working and pins are 0v.

#include <18F25k22.h>
#fuses HS,NOBR ...

Hi PCM,

yes that did solve the problem and CCP1 works fine but when i add CCP2, both CCP1 and CCP2 stop and have 0v at the pins

#include <18F25k22.h>
#fuses HS,NOBROWNOUT,NOWDT,PUT,STV ...

Hi TteImah,

i could not find a built in function to disable the secondary oscillator but i have being learning to use the datasheet a bit more and it says to use the TXCON register setting bit TXS ...

Hi All,

Pic18F25k22 has 5 CCP available. After reading the datasheet and lots of posts on this website, i used the following code to set up CCP1 and CCP2.

#include <18f25k22.h>
#fuses HS ...

Hi All,

I have a general question regarding PWM and CCP. I am using PIC 18F13k22 which has one CCP1 but 4 PWM pins, namely P1A,P1B,P1C and P1D, can each of the pin be used as a PWM output.

The h ...