LPC MicrocontrollersのトピックRe: LPC4078: DAP error while reading DP-Ctrl-Stat register.

LPC4078: DAP error while reading DP-Ctrl-Stat register.

Sahil_Bhat — Wed, 27 Apr 2022 17:06:19 GMT

Hi ,

I am using Jlink commander tool to upload bootloader into microcontroller LPC4078. I am getting an error (Error: DAP error while reading DP-Ctrl-Stat register) and now I can't connect to the device anymore. I was able to upload the bootloader the first time.

I tried erasing the flash but that does not seem to be working either. i read on the web about and found that it might be because the microcontroller has entered a bad state.

Kindly help me understand why'd microcontroller go into such a state ? and how can i bring it back to a normal working state?

Please find screenshots of the problem attached

Re: LPC4078: DAP error while reading DP-Ctrl-Stat register.

Alice_Yang — Thu, 28 Apr 2022 10:18:43 GMT

Hello,

Please try to enter ISP mode, and erase all to test.

About how to enter ISP mode, please refer to LPC4078 UM and below thread:

https://community.nxp.com/t5/LPCXpresso-IDE-FAQs/Regaining-debug-access-to-target-MCU/m-p/473923

Alice

Re: LPC4078: DAP error while reading DP-Ctrl-Stat register.

Sahil_Bhat — Thu, 05 May 2022 13:27:44 GMT

Thank You, This solved my problem.