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Why Spi sclk from the MPC5643L Dual motor Damo board  is not normal,but the motor can runn normally?

Question asked by Eden Li on Aug 7, 2017

Hi Guys,

We got the NXP dual motor Damo board ,and download the Damo code from NXP,  into the board, and the motor run normally,but i use the Scope to observe the sclk of the DSPI, but the signal is shown as below:

and that is not the trapezoidal wave!

Why is that?