On Mon, Oct 20, 2008 at 5:47 PM, Dennis Muhlestein
<[EMAIL PROTECTED]>wrote:
> I've been playing around with reading and writing i2c data on my fx2lp
> board. Here is the 1st three steps for reading i2c data according to
> the TRM (13.4.4)
>
> 1. Set START=1. If BERR = 1, start timer*.
> 2. Write the 7-bit peripheral address and the direction bit (1 for a
> read) to I2DAT.
> 3. Wait for DONE=1 or for timer to expire*. If BERR=1, go to step 1.
>
> I understand you can get a BERR if another controller on the board is
> trying to send data on the bus. I'm not quite clear on what do do in
> this case.
>
> Should I
>
> a) set a timer, wait for the timer to go off, and then start over at
> step 1 or
> b) set the timer, write the address to I2DAT, and then wait for the
> timer then check DONE and BERR both.
>
> Thanks for helping noobs!
> Dennis
>
If I recall correctly, you should use option a. set a timer and then start
over at step 1.
--
Ori Idan
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