karthick

It's one of the things where, if you don't know how to approach it, you probably don't want to be doing it (because it'll cost you too much time). It's not inside the "normal" use case of a netduino - you'd need to take the source of the firmware, add the required functionality there, compile it and overwrite the firmware on your netduino with your custom one.

hi stefan,

I left I2C and now trying trying to connect 2 netduino to one netduino using RS232 as it has two serial port pins.....Anyway thanks for your reply.....

I don't think Netduino/MF supports the I2C slave mode.
The most simple, yet reliable way to exchange data between two (or more) Netduinos are using the UART. Until you don't use the RS232, you may wire the two boards without any additional hardware.
Supposing to use the COM1 on both the Netduinos, wire the I/O #0 of the first board to the I/O #1 of the second one. The other wire is the complementary.
Cheers

Hi Mario

Thanks for the valuable information... i will Try this and hope i get through this problem....

The Netduino microcontroller supports only Master mode, so you'd need to implement I2C slave in software (i.e. write native C/C++ driver, due to precise timing requirements that cannot be achieved in managed code).

At the moment, the only interface available to connect two Netduinos is SerialPort (SPI slave is not supported in the current version of .NET Micro Framework).

Hi CW2

Thanks for the reply..... I am a new to programming world.... Can you please give a outline of what to do to implement I2C slave in software...

thanks for helping .....

i am also struggling to code Netduino without Documentation... I have to look for forum members project code to learn....But that is not enough if you want to try new..... Can somebody Help in this????