Using the SDK 15.0.0 SPI example (master) to send a single byte.
Sending 0x00:
Sending 0x01:
Sending 0x02:
Sending 0x04:
etc ...
Sending 0x7F:
In all the above, MOSI is low after the byte transmission; BUT ...
Sending 0x80:
Sending 0xFE:
So, when the MSB is set, MOSI goes high after the after the byte transmission - even when the last bit transmitted was low!
What's going on here??