Re: I2C, unacked address

Started by "J.C. Wren" March 27, 2008
If you're looking for some working I2C code, take a look at the I2C
support in the demo package at http://jcwren.com/arm

--jc

On Thu, Mar 27, 2008 at 2:41 PM, Paul Claessen wrote:
> Greetings,
>
> I'm trying to hook up an FM radio (SiLabs 7403) to a Keil MCB300 board over
> I2C0 (external pull-ups).
>
> Does anyone with I2C experience have an idea what could be a probably
> common
> cause for NOT getting an ACK back from the device upon sending of the
> device
> address?
>
> (I triple checked pins and connections and device address)
>
> I found some sample code for a Philips LM75 temp sensor. Got one, and
> hooked
> it up to I2C2: same problem: I don't get an ACK back (interrupt code 0x48:
> address sent, no ACK received)
>
> Any much appreciated ideas anyone?
>
> ~ Paul
>
>
>
>

An Engineer's Guide to the LPC2100 Series