Re: [Fx2lib-devel] EEPROM / I2C

[Daniel O'C. <doc...@gs...>]

On 15/03/2011, at 7:09, Derek Bouius wrote:
>>> It appears to ignore the address which is odd..
>>> I can't see an obvious bug in the code yet, still looking..
>>> 
> Not sure what address you are referring to, the I2C 'prom_addr' or the
> offset into the eeprom 'addr'.

I am referring to addr.

I ended up basically cut & pasting the eeprom example code to start off with. My I2C EEPROM is 128kbit and is strapped to 001.

> Keep in mind that the 'prom_addr' gets shifted left by one in the I2C
> read and write routines. Some device datasheets report their 7 bit I2C
> address as an 8 bit value, already shifted.

OK.

I need to look at it more, but I accidentally hung the micro so I can't re-test it until I get back to work to power cycle it :)

> Derek
> 
>>> Thanks.
>>> 
>>> --
>>> Daniel O'Connor software and network engineer
>>> for Genesis Software - http://www.gsoft.com.au
>>> "The nice thing about standards is that there
>>> are so many of them to choose from."
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--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C