CCS/TMDSHVMTRINSPIN: TMDSCNCD28069MISO, proj_lab1b debugging error with connected motor

Dmitriy Voloshin

Part Number: TMDSHVMTRINSPIN
Other Parts Discussed in Thread: TMDSCNCD28069MISO

Tool/software: Code Composer Studio

Encounterd an error at step 3.

Step 3. Connect motor, power on EVM kit,
 Enable the real-time debugger again.
 Set the variable “gMotorVars.Flag_enableSys” and “gMotorVars.Flag_Run_Identify” equal to 1 again.
 Set the variable “gMotorVars.SpeedRef_krpm” to a different value to ensure the motor still runs.

The moment I change "gMotorVars.Flag_Run_Identify" to 1 with HV power on. Driver loses connection with the board. The picture above shows and the motor starts to rotate. At TMDSCNCD28069MISO two blue LEDs continue to be ON permanently.

Then I tried to use DC low voltage source (0V - 60V). I started with 20V, changed "gMotorVars.Flag_Run_Identify" to 1... everything fine. Slowly rised voltage to ~30-35V, same error showed up. (motor not rotating)

I am using CC version: 9.0.0.00018 clean install.

Any suggestions?

over 5 years ago

0 Sean Bigley over 5 years ago

TI__Genius 17175 points

Are you able to scope the JTAG lines to see if there are any transients on the clock and data lines? Sometime these debug issues can be hard to track down and replicate on our end. You may consider moving to lab2b and see if the issue persists. Lab1b is not needed for a known hardware set, as it is only intended to characterize and debug custom hardware.

Sean

0 Dmitriy Voloshin over 5 years ago in reply to Sean Bigley

Prodigy 110 points

I've changed wires connecting the motor. From unshielded to shielded, and grounded it to the board ground. Problem solved...

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CCS/TMDSHVMTRINSPIN: TMDSCNCD28069MISO, proj_lab1b debugging error with connected motor