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

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

‎08-07-2017 06:52 AM
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edenli
Contributor V

Hi Guys,

We got the NXP dual motor Damo board ,and download the Damo code from NXP,http://www.nxp.com/downloads/en/apps/MTRCKTDPS5643L_SW.exe  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:

pastedImage_2.jpg

and that is not the trapezoidal wave!

Why is that?

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