stm32 to stm32 download

[Jlim.1]

If the stm32 mcu is connected as shown in the figure below,

is there a way to download fw image from the master stm32(STM32WB35) mcu to the slave stm32(STM32L0) mcu?

[TDK]

Not with standard tools. You could implement the SWD protocol to transfer it from WB->L0 at great effort.

[Tesla DeLorean]

Well some of the L0 have a UART interface on the SWDIO/SWCLK pins.

Can probably done far more efficiently, with less code, using a very high speed serial connection.

From a debugger context you'd want to expose SWDIO/SWCLK from each processor to its own set of pins/pads

[Jlim.1]

Thank you for your answer.

Is there an easier code among SWD protocols...?

[Jlim.1]

I'm not sure what you mean. Could you explain it in more detail?

[Tesla DeLorean]

Which bit? How to transfer data over a UART?