Thread: Using CCP modules
View Single Post
  #2   Spotlight this post!  
Unread 11-02-2006, 12:47
Kevin Watson's Avatar
Kevin Watson Kevin Watson is offline
La Caņada High School
FRC #2429
Team Role: Mentor
  
Join Date: Jan 2002
Rookie Year: 2001
Location: La Caņada, California
Posts: 1,335
Kevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond reputeKevin Watson has a reputation beyond repute
Re: Using CCP modules
Quote:
Originally Posted by steven114
I'm trying to count a fast-moving encoder, and instead of having thousands of interrupts firing every second I thought it would be a good idea to use the CCP modules in Capture mode to count the number of ticks. However, ifi_aliases.h says that CCP2-5 all have output buffers on them that prevent them from being used in Capture mode, even if you select USER_CCP in the code. Is it true that there is _no_ way to do this? If not, what happened to CCP1? I couldn't find it mentioned anywhere in the documentations, and cross-referencing from the PIC datasheet to the RC docs didn't turn up anything. Anyone know if CCP1 is available for use?
Thanks,
Steven
Section 17.1.2 of the data sheet might be of interest. This document might also help: http://kevin.org/frc/robot_controller_signal_map.pdf

-Kevin
__________________
Kevin Watson
Engineer at stealth-mode startup
http://kevin.org