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EVAL-L9942 interface problem

Question asked by Philipp_Z on Sep 18, 2014
Latest reply on Sep 22, 2014 by Philipp_Z
Hello!

I bought 3 Eval-L9942 boards. I connected supply voltage (5V). Enable (connect to 5V) and a step clock (5V. 100Hz). The VS supply is 12V.
The motor i have connected does not move. All outputs are at 12V constantly.
I have connected a SPI interface (Aardvark) and read out the phase count register (it counts up).
Have I missed something? I have no clue why the driver is not working.

By the way, is it possible to read out the phase counter or change the motor direction without overwriting the phase counter?

best regards
Philipp
Electronics Design Engineer

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