Posted on September 26, 2013 at 06:34Yes, this is possible. What I would suggest is to find a library that you like that has plenty of examples. For instance I use the CMISS V1.2 library and generally use the examples that are meant for the Discovery development kit.
What you will probably want to do is to set up a DMA channel to write your I2C input to memory. There are various options for doing the second half of your transfer, dependent on your unique application.
Is the mcu going to be merely a bridge between these two devices? Do you need to put the data into a specific packet? Do you need to buffer the data and send upon request? These (and more) questions will control your end implementation.
If all you want is a continuous bridge, the I would set up your input DMA stream ISR to write directly to the output data register. This would work best if you were expecting a continuous or frequent data stream from your input.
There are many more options, such as double buffering, that will most likely give you the flexibility to give you what you want.
Again, respond back with more details if you want more advice.
