flixr/paparazzi — pull request #1 by scdwyer (2013-02-14 22:15:20+00:00)
Title: [spi][stm32] added better handling of different length cases between tx ...

...and rx buffers, use dummy buffer for tx 0 length transfer, now only need to make sure the tx buffer is at least as long as the rx buffer in the case that 0 < output_length < input_length, other cases should be handled fine regardless of buffer lengths