ChibiOS Free Embedded RTOS

This sounds very good, I am looking forward to it - I find the current EXT configuration system somewhat cumbersome, especially when moving between ports. It's great that now the complexity will be shifted from the end user to the port implementation.

I personally like #5 the most. {E.g. the current USB-CDC 'driver' implementation works like that, you need to call a particular hook from the start-of-frame handler for the driver to work.}

Also, for instance on Kinetis, the EXT configuration structure doesn't need to contain anything else than the ...

I've been playing around with the I2C driver: m

No really substantial changes; I've fixed the clock bug Fred reported, and slightly rewrote the driver itself and added comments - I needed to clear up for myself what's going on where. One of the reasons for the rewrite (basically moved if/else ...

I have actually discovered that the approach I described does not quite work (on F042) because F042's bootloader *always* checks the BOOT0 pin (and the only other possibility is setting the option byte) - so the only reliable way I found to not just jump to the bootloader code but also stay there is ...

The current kinetis i2c driver would actually benefit from a slight overhaul: add DMA, implement timeout (ignored in the current implementation); also I ran into a problem when i2cMasterTransmitTimeout is called with 'rxsize' 0 (this is indicated in the ChibiOS docs to be done when transmit is ...

Thanks, that should do as well. Nice solution!

There may be a better way of doing this, I would go with

So the mailbox mechanism is working fine - you get out exactly what you post in.

BTW your pool code looks a bit fishy to me: Pool_Buffer contains 128 "pointers to OutputMessage" (sizeof each of the 128 things is the size of the pointer). But in the chPoolObjectInit call you declare that each item ...

I think it should be

The second parameter to chMBFetch should a pointer to the thing you want to receive. You want to receive a pointer.

Thanks! Pretty cool! {I was starting to get antsy.} I hope it's mostly OK. I tested what I could and tried to code conscientously ...

@jstruebel - I did not add your FRDM-K20D50M/USB_SERIAL demo because the USB_SERIAL demos needed slight updating (at least Makefile, chconf.h) and I do not have a ...