BOOSTXL-DRV8301: Control Register 1 resets to 0, and motor stops spinning

Part Number:BOOSTXL-DRV8301

Problem: When trying to run motor control code with DRV8301 boosterpack on F28379D LaunchPad, motor initially spins, control register 1 goes to value 0 (control register 2 stays at its vlaue), then all three motor phases start outputting close to Vdc voltage. 

Goal: Please help me figure out how to fix this issue.

• Notes:
  • I don't see any of the status led's turning on indicating a fault, and when reading the status registers, I read 0. 
  • I dont think the drv8301 booster pack resets and goes in an unresponsive state, because I am still able to read control register 2 correctly as a value of 9.
  • Please find IO assignments for 379D attached if you want to check correct assignment

• Possible causes
  • 379D launchpad by itself
  • Don't think so
  • DRV8305 boosterpack,  which has almost the same pinout as drv8301,  works with 379D launchpad.
  • Tried a different 379D launchpad, and same issue

• drv8301 Boosterpack by itself

• • Don't think so
  • Tried a different drv8301 Boosterpack, and same issue

• • DRV8301 boosterpack works on 377S launchpad

• Software
  • Don’t think so
  • 8301 booster pack works with 377S launchpad
    • So as long as gpio assignments is correct, software not an issue
  • I Checked code gpio assignments
    • Works when using 8305 boosterpack with 379D launchpad, which has almost the same pinout as 8301
    • Only differences are:
      • Reordering of the Vsense pins
      • DC-Cal for 8301 is in place of Wake pin for 8305
      • Extra octw pin for 8301
      • Extra PWRGD pin on 8305
    • Thus only sources of assignment error is octw pin

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