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arnold_w
arnold_w
Senior II
June 25, 2015
Question

Why does my PGSERR-bit get set when I enable UART-interrupts?

  • June 25, 2015
  • 1 reply
  • 574 views
Posted on June 25, 2015 at 15:46

I am working with the Discovery development board STM32F407 microcontroller and building using Eclipse/GNU. My project has a bootloader and an application. After my bootloader has finished programming the application, I check the FLASH_SR (address 0x4002 3C0C) word and it's all zeros, meaning no errors. After that execution continues in the newly programmed application and when I enable interrupts on UART4 using __HAL_UART_ENABLE_IT(&huart4, UART_IT_RXNE) the PGSERR-bit gets set for some mysterious reason and the next time I try to reprogram the flash it fails (unless I recycle power before attempting to re-program). Can someone please help me figure out why this is happening?

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    1 reply

    arnold_w
    arnold_wAuthor
    Senior II
    June 26, 2015
    Posted on June 26, 2015 at 09:46

    I found the problem, it was an uninitialized pointer in my interrupt routine causing this problem.

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