example code in the slides for UART I/O (or maybe in hw)
huh...ve are sinkink! ve are sinkink! resp: vat are you sinkink about?
"i see nussink!"
we get to play with serial interfaces like i2c, spi, usart
sync/async
"So a pirate walks into a bar with a parrot on his shoulder and the parrot keeps squawking :pieces of seven, pieces of seven:.  The bartender asks the pirate
 what the deal is with the bird.  The pirate replies, :Yarr, (parroty|parody|parity) error!:"

init sequence for uart
set swrst
init all usart regs with swrst=1
enable usart mod via mex sfrs
clear swrst via software
enable interrupts

example code! yay! in the slides! time to leave