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Bootloader in High speed run mode

Question asked by Viswajith K A on May 24, 2016
Latest reply on Jul 5, 2016 by Cutworth Wang



I am working on a bootloader code for MK22FN512VLH12, which is running in high speed mode. I am using processor expert code in KDS to read the latest image from SD card and start the firmware update. For successful flash operations I tried to switch the clock to lower frequency and start the normal run. But after the flash write, when I tried to jump into the application, it is restarting and comes to the bootloader code again. It goes to __thumb_startup() of the firmware and restarting without goes to main.But when I tried the same bootloader code in 60Mhz at normal run mode, it  is successfully  jumping to the application. My firmware is running at high speed mode,  So I need to setup the bootloader code in same frequency. Please help