AnsweredAssumed Answered

Kinetis Bootloader flashing problems

Question asked by Filip Trajkovic on Aug 18, 2017
Latest reply on Aug 20, 2017 by Filip Trajkovic

Hi everybody,


I'm working with flash resident bootloader for MK66F MCU family on custom made board. I have encountered the problem when i want to flash the bootloader to the board over the programmer, currently i'm using Segger J-link Base programmer. When i run bootloader over debugger everything works fine. But once i stop the debugger and i reset my board it starts to  behaves like the bootlader is not flashed properly on the board. I then try to connect to the board and read the memory with the Segger Jmem app and it gives me the next window:

It doesn't allow me to read the memory.

When i flash any other program that i made, it works without any problem. I debug it, reset it and it works fine. I don't know what could be the problem here? Is it some bug in the KBOOT v.2 release or something else? If someone can help me to solve this issue i would be really grateful.


Best regards,