[riot-notifications] [RIOT] drivers: peripheral UART driver interface overhaul (#3265)

Hauke Petersen notifications at github.com
Mon Jun 29 12:13:32 CEST 2015

same, it does not make any difference if you call it from inside an ISR: all printf does is basically filling a ringbuffer and setting the uart TX isr interrupt. All we need to make sure, that we disable interrupts whenever tinkering the the TX buffer, so that there is no concurrent write access to the buffer...

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