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How to flash firmware image through uart in stm32l476-discovery

Question asked by zhang.samuel.001 on Nov 3, 2015
Latest reply on Nov 3, 2015 by Clive One
Dear all:

I wonder how can I flash firmware image from PC through uart port (uart1/2/3) in stm32l476-discovery board.

It is said in reference manual "nBoot1" should be set to 1 which represents so called "Boot0" - a virtual port would be set to low level. Then one can burn image through any uart to internal flash.

But I don't know how to set the register "nBoot1" to 1 in condition of no way to write register after reset.

I also tried to ignore this setting and just set "Boot0" to VDD. But each time, for each UART, same error occurred: "No response from the target...".

So I'm here to look for your help on this issue.

Anyone who has STM32L476-Discovery or NUCLEAR board on hand, please give me your hand.

Thanks. 

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