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  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Wed Mar 10, 2004 10:48 am   Subject: External EEPROM returning 0xFF only
No ... it is the code with the zero in the parentheses.

I'm like you ... I don't understand what I'm overlooking.
I feel like its just sitting in front of me, but I'm too close to see it. :conf ...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Tue Mar 09, 2004 8:48 pm   Subject: External EEPROM returning 0xFF only
Just a quick update for anyone who cares (at this point I almost don't).

I replaced the 2401 eeprom with a new one and it works ... with one oddity. The following snippet of code shows that I had ...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Mon Mar 08, 2004 4:31 pm   Subject: External EEPROM returning 0xFF only
Thanks for the 'oops' factor check. Yes, I'm aware of the 'U' pin-out for ICs. We design test equipment for the automotive industry here, so I have just a little electrical back ground. Wink

...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Mon Mar 08, 2004 3:11 pm   Subject: External EEPROM returning 0xFF only
PCM programmer:

You spoke the works that I was hoping you wouldn't -- "...and it worked fine." Working from your notes, top down ...

I went a head and added the fuses statement (#fuses HS,NOPUT ...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Mon Mar 08, 2004 12:11 pm   Subject: External EEPROM returning 0xFF only
PCM programmer:

Sorry for the delay ... weekends can be just too much fun sometimes.

Here is my "Test" program. It is a simple three step process -- Read data, Write data, Read again. (The com ...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Fri Mar 05, 2004 6:19 pm   Subject: External EEPROM returning 0xFF only
That is what I was doing while I was waiting for a reply ... It still isn't working. With a scope, I can see the SDA and SCL lines dropping from 5v to VSS. So the PIC is accessing the lines. I have ...
  Topic: External EEPROM returning 0xFF only
Gag

Replies: 14
Views: 31800

PostForum: General CCS C Discussion   Posted: Fri Mar 05, 2004 4:25 pm   Subject: External EEPROM returning 0xFF only
I'm having a problem with storing some setup and calibration data on an external eeprom for a battery powered, handheld pressure gauge. The eeprom keeps returning 0xFF whenever I read it.

I'm hopi ...
 
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