Other Parts Discussed in Thread: UNIFLASH
I have some TM4C123FE6PMI failed in use. With the failed boards, I was unable to re-flash the microcontroller.
Here are the things I tried.
- I was able to unlock the microcontroller using LM Flash Programmer
- I was unable to read the memory of the microcontroller using uniflash
When I tried to connect to target with XDS200, I got the messages below.
-----[Print the reset-command software log-file]-----------------------------
This utility has selected a 560/2xx-class product.
This utility will load the program 'xds2xxu.out'.
The library build date was 'Sep 20 2022'.
The library build time was '17:17:24'.
The library package version is '9.9.0.00040'.
The library component version is '35.35.0.0'.
The controller does not use a programmable FPGA.
The controller has a version number of '13' (0x0000000d).
The controller has an insertion length of '0' (0x00000000).
This utility will attempt to reset the controller.
This utility has successfully reset the controller.
-----[Print the reset-command hardware log-file]-----------------------------
This emulator does not create a reset log-file.
-----[An error has occurred and this utility has aborted]--------------------
This error is generated by TI's USCIF driver or utilities.
The value is '-233' (0xffffff17).
The title is 'SC_ERR_PATH_BROKEN'.
The explanation is:
The JTAG IR and DR scan-paths cannot circulate bits, they may be broken.
An attempt to scan the JTAG scan-path has failed.
The target's JTAG scan-path appears to be broken
with a stuck-at-ones or stuck-at-zero fault.
[End]
I checked 1 through 7 listed in your Application Report SPMA075, page 27.
https://www.ti.com/lit/pdf/spma075
1 through 6 were fine. 3.3V and 1.2V were there. 16MHz crystal on my PCB was not oscillating.
I'm trying to understand if it’s possible to make the microcontroller work again.