Rudy,

 Are you sending the correct address for the DAC?  I know this sounds
 trivial, but is something that needs to be checked.   Also, are you
 using the hardware I2C capabilities?   I've tried to get the hardware
 I2C (MSSP) going, but have had no luck so far.  But then I haven't
 given it much time either.   Anyway, check the address, and check to
 see if you're getting an 'ACK' bit back.

                                                      Regards,

                                                        Jim





> Hi fellow PICers,
>
> First of all, I would like to thank a lot of you for taking the time to
> read the personal info on my website, and for making a lot of
> interesting comments.  I should have joined the list years ago, and I
> would have found out what FNU stands for right then. *LOL*
>
> Now, back to the interesting PIC stuff.  I am trying to interface a
> TC1322 12-bit DAC with a 16F877.  I am using the I2C interface between
> them.  Have anyone tried this before?  Well, it is not working for me
> right now.  But I guess what I am asking is if there
> is something important to look out for (such as: SDA and SCL must be
> configured as inputs, and putting a pull-up resistors on both SCL and
> SDA pins - it took me a while to realize that).  There is definitely
> some signal out of both SCL and SDA line of 16F877, but the TC1322 does
> not seem to be receiving it.  I tried it with 2 different TC1322, so I
> don't think the DACs are 'fried'.
>
> Thank you very much in advance.  This list is the best!
>
>
> ------------------
> Rudy Rudy
> http://www.rudyrudy.com
> rudy@rudyrudy.com
> ------------------
>
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