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TMS320F280039C: Why does the controller suspend after loading the program?

Part Number: TMS320F280039C
Other Parts Discussed in Thread: LAUNCHXL-F280039C

Tool/software:

I purchased a LAUNCHXL-F280039C development board and followed the user guide steps to add the _LAUNCHXL_F280039C predicted symbol, configured to use the 2-pin cJTAG,but still stop,had no PWM output, the same problem with my control board as shown above.

After the program is loaded to the MCU, the controller immediately enters the suspend state,My question is why it stops, why is there no PWM output?

My goal is to use the DSP to generate PWM waves to make the CLLC based DCDC work, but there is no PWM at the GPIO I set.

Any suggestion help,Thanks.