CCS/TMS320F28377S: Uniflash

Hello,

John Paul1 said:

Error connecting to the target: (Error -2131 @ 0x0) Unable to access device register. 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). (Emulation package 8.0.27.9)

This is a low level connectivity failure. Please see the below link for more details and for suggestions on how to resolve it:

https://software-dl.ti.com/ccs/esd/documents/ccs_debugging_jtag_connectivity_issues.html#device-register

Based on the Emulator package version, it sounds like you are using an older version of UniFlash. You may want to update to a later version.

Hope this helps

ki