I am trying to communicate an arduino with a Silabs F560 Toolstick Daughter Card.
On Arduino (Master)
I have loaded the i2c scanner program from http://playground.arduino.cc/Main/I2cScanner which basically pings all possible address (0x00 to 0x7F) on the bus trying to get an ACK.
On C8051F560 (Slave)
I have loaded the example Slave code given by Silicon Labs of address 0x78. I have changed the SMBus frequency to 100000 (since Arduino works on 100kHz)
The Arduino was not able to recognise it on the bus. I have tried pull-up resistors of different combinations 3.3k, 6.6k, 10k ohms. That didn't make any difference.
When I tried to analyse the bus with a logic analyser, the SiLabs MCU was disrupting the SCL driven by Arduino.
I think an example code given by a manufacturer should work fine.
Is there anything I am missing ? or is it the H/W that is damaged ?