TMS320F28335: Trouble Reading Register PC:(Error -1156 @ 0x0)Device may be operating in low-power mode.

Ben Qin

Part Number: TMS320F28335

Hi Team,

There's an issue from the customer need your help:

Pass the parallel data to the address 0x04000 through AD7606 (although the data cannot be passed in). When the DSP address reads this address, the DSP will report Trouble Reading Register PC:(Error -1156 @ 0x0)Device may be operating in low- power mode. Do you want to bring it out of this mode? Choose 'Yes' to force the device to wake up and retry the operation. Choose 'No' to retry the operation without waking the device.(Emulation package 9.2.0.00002) .

Thanks & Regards,

Ben

over 2 years ago

0 Benjamin Collier over 2 years ago

TI__Mastermind 32186 points

Hi Ben,

So everything works fine until JTAG tries to read that address? Does a problem happen with the CPU reading this register without the debug probe connected? Has there ever been a password programmed for this device?

Best Regards,

Ben Collier

0 Ben Qin over 2 years ago in reply to Benjamin Collier

TI__Intellectual 2690 points

Hi Benjamin,

Benjamin Collier said:
So everything works fine until JTAG tries to read that address?

Yes.

Benjamin Collier said:
Does a problem happen with the CPU reading this register without the debug probe connected?

Yes.

Benjamin Collier said:
Has there ever been a password programmed for this device?

No password has been programmed for the device.

Best Regards,

Ben

0 Benjamin Collier over 2 years ago in reply to Ben Qin

TI__Mastermind 32186 points

Hi Ben,

According to the datasheet memory map, 0xD000 is part of a reserved memory block. Is there a reason that the customer is trying to use that address?

Best Regards,

Ben Collier

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28335: Trouble Reading Register PC:(Error -1156 @ 0x0)Device may be operating in low-power mode.