MOSI signal of STAMP 6 spikes

[robybyte]

While measuring RX TX signals of telemetry a strage signal appered on MOSI of STAMP 6 (pin number 2 at the SmartFusion IC).
Signal looked like a falling exponential function (as you discharge a capacitor) creating some spikes (Vpp was in the given limit of the SM2).

TODO: Measurments at pin 2 all the way to the corresponding STAMP.

Issue