topic Re: LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port" in LPC Microcontrollers

LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port"

brandonProgramming — Mon, 04 Mar 2024 18:20:27 GMT

I am working on an LPC5536 EVK board and was able to run the example code. I then updated the CMSIS-DAP firmware from 2.245 to 3.133 and now I receive the following error messages when I attempt to debug my example software program "led_blinky".

I am using MCUXpresso 11.9

Re: LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port"

brandonProgramming — Mon, 04 Mar 2024 18:21:13 GMT

Does anyone have CMSIS-DAP MCU-LINK_Installer_2.245

Re: LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port"

Alice_Yang — Tue, 05 Mar 2024 07:54:21 GMT

Hello @brandonProgramming

I don't think problem is CMSIS-DAP firmware 3.133. I test this firmware with LPC55s36-evk, there is no issue. While I have MCU-LINK_installer_2.250.exe, you can test if need. Can not find 2.245.

Recommend you enter ISP mode, then use GUI Flash tool inside MCUXpresso IDE (or blhost tool) erase flash all. then Remove ISP jumpers. Create a new IDE workspace, import LED demo. Debug again.

Alice

Re: LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port"

brandonProgramming — Tue, 05 Mar 2024 13:17:33 GMT

I gave the GUI flash tool a try to erase all flash, but there are no probes for me to connect to...Note the board was in isp mode by shorting out J25.

Re: LPC55S36 EVK board: CMSIS-DAP Update causes "No connection to chips debug port"

Alice_Yang — Wed, 06 Mar 2024 01:25:58 GMT

Hello @brandonProgramming

Enter ISP mode through connecting 3-4 of J43.

Alice