UNI/O CCS C protocol code

JW2881 · Joined: 18 Jun 2009 Posts: 2

It's me, Looking to use EEprom with low interfacing pin. Anybody have
idea for me? Looking for 11AAXXX Microchip eeprom but have no
example code with CCS compiler.

FvM · Joined: 27 Aug 2008 Posts: 2337 Location: Germany

You can port the Microchip example sources for Hitech C.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

CCS has a driver file for it. It's in this location:

JW2881 · Joined: 18 Jun 2009 Posts: 2

I could not find this driver on my pc. I use CCS 4.057 version.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Send an email to CCS support and ask them nicely if they will email you
the driver file. Be sure to send them your customer reference number
so they know that you own the compiler.

dpechman · Joined: 04 Dec 2007 Posts: 43

have somebody tested this driver with 11AA02E48?

it's compliant with the driver?

I am trying to read 0xfa to 0xff to extract the mac and all address are returning the same aleatory number each time I restart the board.

If I run the code with microchip demo for c18 it works. My hardware is ok.

temtronic · Posted: Fri Feb 24, 2012 2:58 pm

Since you've got both the C18 source and the CCS code, it can't be that hard to compare how the code works (and doesn't).

dpechman · Joined: 04 Dec 2007 Posts: 43

Sure it is, just asking if someone have tried with success because I don't analyse yet anything in the operation of the driver, just make it run in my code.

Trying to save some time, this is why I choose to try this pre-build driver first. If anybody reply until Monday I will have to try the reverse-engineering from c18 driver and checks with the datasheet.

dpechman · Joined: 04 Dec 2007 Posts: 43

In the datasheet of 11AA02E48 says:

"This data sheet documents only the
device’s features and specifications that
are in addition to the features and specifications
of the 11AA020 device."

11AA020 is compliant, then, I believe it have to work.

dpechman · Joined: 04 Dec 2007 Posts: 43

I found a problem.

In the c18 initialization there is a difference, the internal pull up is activated(no, I don't have one in my board), then I put a resistor of 10k in the board to confirm and it start to show different bytes.

The bytes after the 3rd(0xfc to 0xff) after each restart still the same, but the 1st and 2nd are random yet.

next step, activate the internal weak pull up.

dpechman · Joined: 04 Dec 2007 Posts: 43

YEAH!!!!! WORKS!!!!

bit_set(*0xF89, 6); //activate pull up LATA.REPU

Just not sure why with external pull up it fails, perhaps impedance.

my mac: 00:04:a3:03:f0:40

Thanks temtronic for making me work Smile

laziness killed the man

temtronic · Posted: Fri Feb 24, 2012 8:25 pm

Heck, all I know is that the 'new' PICs are FAR more complicated than the quartz windowed versions that I played with 20 years ago. I don't know HOW anyone can remember all the 'details' BUT I do know that reading is very,very important and knowing WHERE the information might be is the key.Details, it's always in the details.....
I've 'settled' on 3 or 4 PICS and 'fine tune' code to make them work,though the great features the new ones have.....well, they're only 'new' for a week or so.
I'm sure you'll remember better, by being gently pushed rather than having the answer served on a silver platter.

dpechman · Joined: 04 Dec 2007 Posts: 43

I agree 100%, and say that the hardest part is what makes much of the quorum of this forum to work with embedded electronics. I also have 20 years involved in the area, but only about 10 with microchip. And the more deepen it, the more I like it.