How can i make tunnel or bridge software for stm32f4 as Cube IDE ?

[MR.AUGOK]

Hello. i am using Cube IDE for stm32f4 chip. My stm32f4 chip is connected on PCB from Uart1 to another chip that I want to update firmware.How can I update the firmware of this chip which using stm32f4 as bridge or tunnel?

I want stm32f4 to be bridge for firmware update only.

thanks for your helping.

[Andrew Neil]

why not?

[MM..1]

Can I connect directly from UART2 line to UART1 using DMA for data transfer without CPU for stm32f4? @Andrew Neil​ Try explain this without CPU .

My reply is NO

[Andrew Neil]

My question was, "why not?"

What problem(s) do you see with those suggestions?

Why do you think they will not work for you?

Remember that we know nothing about you or your project other than what you provide here - so we have to ask questions to understand your project and its requirements & constraints.

The more information you provide, the more likely you are to get good answers.

The harder you make it to find out what you're doing, the less likely you are to get good answers - or, in fact, any answers at all.

[MM..1]

Maybe you mean i reply to your Q , but no i reply Author Q.

And why not. Because Without CPU canot be configured and managed two UART in any mode DMA too.

[Andrew Neil]

(never mind)