Initial MSP430X Port.

[awygle]

This port includes hal, pal, serial, and st drivers. It supports both large and small model code and data for MSP430X-class CPUs. It has only been tested on the EXP430FR5969 LaunchPad board.

I wouldn't be surprised if there were some things that needed to be fixed before merging - any feedback is welcomed.

[barthess]

@awygle
I can not test your code and send any feedback, but I can grant you write access if you will be a MSP430 maintainer.

Any thoughts from other repository users/contributers?

[utzig]

Is this based on the old MSP430 port or was it written from scratch?

[awygle]

This was written from scratch. I referenced the old MSP430 port a bit, as well as the AVR and STM32F0 ports, to figure out what the various APIs were supposed to do.

I'm definitely willing to maintain this port.

One non-technical thing I did want to ask - since this is in Contrib I made sure all the files are Apache 2.0 licensed and changed the copyright line from Giovanni to me, is that the right thing?

[utzig]

In contrib you can attribute everything to yourself I think. On main repo you can attribute most port specific and hal files to yourself but not core kernel files.

[awygle]

@utzig That's my understanding as well. Thanks for confirming.