topic After flash programming, board is not working, in i.MX Processors

After flash programming, board is not working,

Seongyon_Jeong — Mon, 07 Aug 2023 02:44:11 GMT

IMXRT1020 board

I added sdram initializing code and delete preprocessor XIP_BOOT_HEADER_DCD_ENABLE=1 in example lwip-echo-freertos,

After Example lwip_ipv4_ipv6_echo_freertos, flash programming board is not working,

and.. Flash programming is not impossible.

Recovery is complete , Anyway attached my project, Please test this project by programming this binary on Board flash, What is wrong.??

Hui_Ma — Wed, 09 Aug 2023 00:57:59 GMT

Hi,

Thank you for the patience.

I did a test with RT1020 EVK board using attached code.

I could regenerate your mentioned issue (debugger lost connection).

While, I can follow this thread mentioned way to recover the board.

First of all, please make sure you set the board SW8 (on the board bottom side) with serial download mode:

1) SW8: 1-OFF,2-OFF,3-OFF,4-ON

2) Power off and power on again, or Press Reset button

Below is my test result:

After that, change SW8 back to 1-OFF,2-OFF,3-ON,4-OFF, then you can debug another project as expected.

Wish it helps.

Mike