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DRV3901-Q1: Problems reading the trigger status from STATUS0 register

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Part Number: DRV3901-Q1
Other Parts Discussed in Thread: AM2632-Q1,

Tool/software:

I am attempting to implement a fault diagnostic between the MCU and the DRV3901-Q1.  I am repeating the following two SPI transactions.  1. Write to CMD1 to CLR_FAULT, 2. Read  STATUS0.  I am alternating between asserting trigger 1 and trigger 2.  I can always read the status of the trigger 1 being asserted.  I can never read trigger 2 being asserted.  I am testing this using the DRV3901-Q1 EVM attached to our MCU (AM2632-Q1).  I have removed the shunts so that the DRV3901-Q1 can be controlled by the MCU instead of the on board MSP430.


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