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 support@ccsinfo.com

ICD-U64 with 18F46j50: verification fails

 
Post new topic   Reply to topic    CCS Forum Index -> CCS ICD / Mach X / Load-n-Go
View previous topic :: View next topic  
Author Message
kristofvl



Joined: 21 Jun 2004
Posts: 3

View user's profile Send private message

ICD-U64 with 18F46j50: verification fails
PostPosted: Fri Mar 19, 2010 7:19 am     Reply with quote

I'm having a strange problem reoccurring during the verification stage in programming an 18F46j50 with an ICD-U64.

My configuration:
- the CCS compiler 4.1
- the latest ccsload (4.023)
- several (5) boards, all equipped with a PIC 18F46j50
- MCLR pulled up with 10k resistor
- board powered from USB port's 5V, properly converted to 3.3V
- MCLR, PGD, PGC, GND, and VDD (3.3V from the board) connected to the ICD

The problem:
A small piece of code (turning an LED on and off) tends to work perfectly, but as soon as I go for larger program sizes (more than a 1000 instructions), I get verification errors.
The "Verify Data" phase will take very long, and end up with a "Could not read target ROM: Did not ack message"

Strangely, when afterwards checking with "Verify Chip=File", it goes faster and smoother, and returns an error on the fuses: the first byte is fine, the others are all 0xFF's.

Anyone experiencing the same?
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> CCS ICD / Mach X / Load-n-Go 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