tridge/SiK — pull request #19 by ldslaron (2014-07-02 13:29:02+00:00)
Title: Made radio FIFO work with appends greater than 4 bytes

The radio TX FIFO was appending only 4 bytes at a time because the FIFO would sometimes overflow when adding bigger chunks. This change resolves that issue by adding hysteresis to the almost empty bit polling, which gets updated only with the TX clock of the radio.