Arnim Läuger f577c2c080 Sync uart configuration to Tx FIFO level (#1806)
* sync uart configuration to tx fifo level

* poll tx fifo empty before disabling interrupts

* echo parameter is optional for uart.setup()
2017-03-01 12:41:56 +01:00
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2016-01-16 23:11:40 +01:00
2016-09-05 20:45:19 +02:00
2016-01-16 23:11:40 +01:00