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Help: MIMXRT1020-EVK suddenly stopped working !

Question asked by Mark Butcher on Nov 14, 2019
Latest reply on Nov 18, 2019 by samsaprunoff

Hi All


I have been working successfully with the MIMXRT1020-EVK for some time and had a working code loaded in QSPI-FLASH - so that it booted from there and ran this code.


Using IAR I was then developing code directly in RAM so that I didn't need to program the QSPI-FLASH each time and always had a working reference after a power cycle.


I wanted to check something in MCUXpressor and so loaded its blinky project to the board (to QSPI-Flash). The load failed for some reason and there is presumably no QSPI Flash code loaded any more (since the original code doesn't start any more) but no debugger (either MCUXpressor or IAR) can now load or connect any more. The MCUXpresso error message, when trying to load the blinky reference:


The board still appears as DAPLink with USB-CDC so the Open SDA debugger looks OK.


Any idea what went wrong and whether it is recoverable somehow??