regain debug access RT1176

ingdb — Tue, 17 Jan 2023 11:04:03 GMT

Hello all,

I have a custom board based on the RT1176 processor. Everything was working fine but when testing/debugging something around FlexSPI I loaded a program on the board that prevent the debugger to connect. I got always the same error message, when trying to debug the board but also when trying to erase the flash with the GUI tool

Probe Firmware: MCU-LINK Pro (r0CF) CMSIS-DAP V2.263 (NXP Semiconductors) Serial Number: EPQGLZRRF3CNH VID:PID: 1FC9:0143 USB Path: \\?\hid#vid_1fc9&pid_0143&mi_00#c&35210a53&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030} connection failed - Em(01). Cannot find MEM-AP selected by core index (check target power).. Retrying Failed on connect: Em(01). Cannot find MEM-AP selected by core index (check target power) Connected&Reset. Was: NotConnected. DpID: 6BA02477. CpuID: 00000000. Info: <None>

As I've seen on the RT1020 eval board it is possible to brick a board by software. On the RT1020 EVK the fix was easy (change bootmode and delete the flash) but how do I do this on my custom board? I don't have a dip switch for the boot modes and I don't want to desolder resistors. Is there any other way to recover such a board?

best regards

Matthias

i.MX Processorsのトピックregain debug access RT1176

regain debug access RT1176