AnsweredAssumed Answered

Bootloader sometimes run slow.

Question asked by Calvin63 on May 19, 2016
Latest reply on May 19, 2016 by Clive One
Hi:
   My systems run STM32F427@168 MHz using external oscillator @ 8 MHz. The system will first run boot-loader then jump to main application.

 I find that sometimes the boot-time is long. After check it's due to boot-loader. So I toggle LED to measure the running speed of boot-loader.

  I found that normal speed is about 12~13 times slow speed. Since I use the normal "system_stm32f4xx.c" without any modification, I will support it has no bugs. Is there any hint or what can I do to check why sometimes it slow. (Note that after jump to FW, the FW will run the same system_stm32f4xx.c again, and the FW speed is 100% OK).

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