> Are the SCL and SDA lines active (getting "some signal out of it")
when the
> TC1322 is connected to the 16F877?  Or are you testing the F877
separately?
>
> Unfortunately, I haven't used a DAC with a PIC using the SPI/I2C
interface.
> Maybe someone else has and can offer more helpful suggestions.
>
> --Andrew
>

Both.  When I connected F877 to the TC1322 or tested the F877
separately, the lines are active i.e. I can see some oscillations on the
line once in a while since I use a relatively long delay of 200ms
between each transmission.  And by transmission, I mean the full I2C
packets (Address, Command and 2 data bytes) that needs to be sent to the
TC1322 DAC.

Currently, I am only doing a very simple program: incrementing the
12-bit word every 200ms.  So, if it's working, I should see the Vout
starts from 0V and increment slowly to 5V (after 4095 * 200ms).

Thank you very much.


------------------
Rudy Rudy
http://www.rudyrudy.com
rudy@rudyrudy.com
------------------

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.