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Piccolo (F2803x) I2C sending data problem

Eyal Ben Artsi
Prodigy 90 points

Hi,

 I have a problem regarding the operation of the Piccolo I2C sending data.

I want to write some data out the I2C port to a digital resistor (AD5248) located on the PCB, and I'm really stuck.

I am looking at the signals on a scope to verify what is send by the I2C, and I see that it works fine for the first byte transfer (a total of 3 bytes).

 I see the start, only 1 byte of data, followed by a stop.

The big problem is that nothing happens after that. Same routine, 1 clock, 1 data byte (the address byte), and nothing.

1) I'm using I2C interrupt.

2) I am using the FIFO transmit.

3) I put pull up resistors on the SDA and SCL (as TI request)

Can I get some help 

Thanks,

Eyal Ben Artsi