CCS: TMS320F28379D custom board getting DAP error

raj eg

Prodigy 230 points

Other Parts Discussed in Thread: TMS320F28379D

Hi Rafael,

Thanks for the information, After programming the XDS100 now TI board is working fine.

Now we are having one more concern.

We designed our own board using the reference designs schematics provided for TMS320F28379D by TI.

In our board when we tried to flash through the XDS1002. we are getting the following error.

Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK)

I have attached our schematics design for your reference. 7838.TI Controller Schematic.pdf

Kindly suggest some check points to resolve.

Thanks,

Rajendhran

over 5 years ago

0 Ki over 5 years ago

TI__Guru**** 472411 points

Hi Rajendhran,

The DAP error is explained in the below link:

https://software-dl.ti.com/ccs/esd/documents/ccs_debugging_jtag_connectivity_issues.html#cannot-access-the-dap

Did you try lowering the TCLK setting?

I cannot comment on your schematics design as it is beyond my area of expertise. I will move this thread to the device forum.

Thanks

0 Frank Ankapong over 5 years ago

TI__Mastermind 28275 points

Hi Raj,

Have you looked at the suggestions in the link provided by Ki on the DAP error? For schematic designs, please follow the recommendations we give in the C2000 datasheet.

C2000™︎ microcontrollers

C2000 microcontrollers forum

CCS: TMS320F28379D custom board getting DAP error

Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK)