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Constantin Wiesener
Constantin Wiesener
Associate
April 24, 2017
Question

Flash a cascade of STM32 with bootloader

  • April 24, 2017
  • 2 replies
  • 691 views
Posted on April 24, 2017 at 17:10

Consider the following setting:

One MAIN STM32F407 and one LOW STM32F407.

There are both connected via a UART. But only the main is connected with the UART to a flasher.

How could I flash both CPU (both are running with bootloader) through the one UART connected to the MAIN CPU?

Thanks for your help and best regards,

Constantin

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    2 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    April 24, 2017
    Posted on April 24, 2017 at 17:48

    Make a simple forwarder that copies the data too/from the main device to the slave, so as to create a tunnel. ie data received on one USART is transmitted out the other. Pick a common speed, ie 9600 8E1

    You could also have the main device use the loader protocol to flash the slave.

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    Constantin Wiesener
    Constantin WiesenerAuthor
    Associate
    April 25, 2017
    Posted on April 25, 2017 at 08:23

    okay, are there any examples on how to start?

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