- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
Part Number: DK-TM4C129X
Hi,
I did the following:
1) In IAR Embedded Workbench, pressed "Download & Launch Debugger" for TI example code "grlib_demo"
2) I didn't see the grlib_demo program appear on the touchscreen. In fact it seemed like my old code was still being run by the uC despite the Debug Log stating that it loaded "grlib_demo" and performed a software reset.
3) I decided that maybe I needed to manually reset the uC so it could load the just uploaded FW and display grlib_demo. Pressed the RESET button located next to the touchscreen
4) grlib_demo program appears on touchscreen but uC eternally resets (the touchscreen kept flashing from a white screen to the grlib_demo and back again). I can't stop the resetting.
5) When trying to upload new FW to get out of this eternal reset state, programs say something to the effect of "target cannot be initialized"
I finally got out of this eternal reset state by holding down the reset button, and immediately after releasing it I began uploading new FW. In that narrow window of time, my computer can still see the USB connection so it can initiate a FW update.
But for future reference, I'd like to better understand:
(1) Why did the uC enter this eternal reset state when I was in debugger mode and pressed the HW reset button?
(2) Why didn't grlib_demo appear when I pressed "Download & Launch Debugger" in IAR Embedded Workbench (this might be a question for them, but I thought I'd throw it out there anyways)?
Thank you for the input,
Kevin
