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the answer has got to be easy...

 
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tbob



Joined: 06 Dec 2006
Posts: 3
Location: Providence, RI

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the answer has got to be easy...
PostPosted: Wed Dec 06, 2006 9:35 am     Reply with quote
I'm using the CCS compiler as a plugin for MPLAB. It recognizes the output_g() function, but not the setup_power_pwm() function. Here's my code:

Code:

#include <18F8722.h>

#fuses HS, NOWDT, NOPROTECT, NOLVP, BROWNOUT, PUT
         //High Speed external oscillator, no Watchdog timer
         //No code protection, no low voltage programming
         //Brownout reset, Power up timer
#use DELAY (CLOCK=10000000)   //Clock is 10MHz
#use fast_io(G)

void main (void)
{
   output_g(0x08);
   SETUP_POWER_PWM(PWM_FREE_RUN, 1, 65535, 4095, 128, 1, 0);
   setup_power_pwm_pins(PWM_ODD_ON);
}


when I build, I get the following message:
Quote:

Clean: Deleting intermediary and output files.
Clean Warning: File "C:\5DIS1000\BB_Motorcontrol\source\main.o" doesn't exist.
Clean: Done.
Executing: "C:\Program files\Picc\CCSC.exe" "main.c" "-I .\include" +FH +DF +LN +T -A +M +Z +Y=9 +EA
*** Error 12 "C:\5DIS1000\BB_Motorcontrol\source\main.c" Line 43(1,16): Undefined identifier SETUP_POWER_PWM
*** Error 12 "C:\5DIS1000\BB_Motorcontrol\source\main.c" Line 44(1,21): Undefined identifier setup_power_pwm_pins
2 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: Wed Dec 06 10:19:09 2006


I've tried both uppercase and lowercase for the "SETUP_POWER_PWM" line. What am I missing!!?? thanks for the help, and sorry for noobing.
jecottrell



Joined: 16 Jan 2005
Posts: 559
Location: Tucson, AZ

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PostPosted: Wed Dec 06, 2006 9:49 am     Reply with quote
Look in the header file and see what the possible setup options are for the PWM.

John
tbob



Joined: 06 Dec 2006
Posts: 3
Location: Providence, RI

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PostPosted: Wed Dec 06, 2006 10:53 am     Reply with quote
OK, I'll look, but I'm not exactly sure what I'm looking for. There's a section on the CCP, which mentions SET_PWMx_DUTY(), but no mention of SETUP_POWER_PWM(). Is it possible that not all functions are available for all processors?

I'm using (in case you didn't glean from the code) an 18F8722.

thanks!
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Dec 06, 2006 11:00 am     Reply with quote
Also look in the data sheet. For example, the 18F4431 data sheet
has this section in it:
Quote:
17.0 POWER CONTROL PWM MODULE


The 18F8722 doesn't have it.
Ttelmah
Guest
PostPosted: Wed Dec 06, 2006 11:05 am     Reply with quote
Of course it is.
The point is that the .h file for the particular processor, lists which module control setups exist for the particular chip. The POWER_PWM module only exist in the 18F1220, 1230, 2331, 2431, 4331, & 4431 chips at present.
Hence before using a module, look at the data sheet for your chip, and see if it present, and then at the .h file to see what the configurations are.

Best Wishes
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