I2C Slave Mode

[neums]

Hi,
will there be an official I2C Driver with an implemented slave mode in future?

Thanks.

[Giovanni]

Hi,

I am evaluating the proposals, no final decision yet. I am not yet sure about an API able to cover all cases.

Giovanni

[Giovanni]

In the meanwhile: viewtopic.php?f=16&t=3020

Giovanni

[steved]

I am not yet sure about an API able to cover all cases.

I've found that genosensor's interface has worked well for me - I've got an I2C slave which uses it quite heavily, and its pretty solid.

There are basically three scenarios which have to be handled:
1. Return a message on a read [consider as a 'status' request]
2. Accept a message, process it, and return a response [consider as a 'poll' or 'acknowledged command']
3. Accept a message and process it [consider as an 'unacknowledged command']

Number 2 is the most demanding, since the I2C bus generally has to be held in a wait state while processing the received message

Not finding I2C to be the ideal inter-processor communication method, but it's all that was available to me!