CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support
Keypad and DS1302 Question

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
glenjoy



Joined: 18 Oct 2004
Posts: 21

View user's profile Send private message

Keypad and DS1302 Question
PostPosted: Wed Feb 11, 2009 8:24 am     Reply with quote
I will be connect my keypad tp PORT D, it is a 4x3 keypad, do I need to put pull-up resistor on my ROWS (A,B,C and D)?

Another question, I am using DS1302.C driver, when I initialized rtc_init(), there is an error on proteus saying there is a logic contention on RTC_IO, is this normal?
Piccolo



Joined: 19 May 2006
Posts: 23
Location: Connecticut

View user's profile Send private message

pullup resistors
PostPosted: Wed Feb 11, 2009 9:41 am     Reply with quote
The need for pullups is certain, but some PIC parts do have internal pullup resistors on some of the ports that can be used for you keypad. Check your data sheet for your part.
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group