Flash a cascade of STM32 with bootloader

[Constantin Wiesener]

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

[Tesla DeLorean]

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.

[Constantin Wiesener]

Posted on April 25, 2017 at 08:23

okay, are there any examples on how to start?