I am trying to get SPI communication to work between my Espruino Wifi and a time-to-digital dev kit.
If the dev kit board is powered off, the SPI signals from Espruino looks good (I am using a logic interface to debug). But as soon as the dev kit board is powered on, the SCK clock signal stops pulling low, -it is always high with some sporadic short low pulses.
I am a programmer with very little experience from the world of electronics. Does anyone have an idea what could be wrong?
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