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Hi, I have a board were 3 STM32 are connected to a JTAG port. The 3 STM32 are daisy chained. I am using a JLINK EDU Mini. One STM32F746 is a master for the two slaves STM32L451. The NRST pin of each slave is connected to a different GPIO of the master as well as a different push button. The NRST pin of the master is connected to the NRST pin the JLINK EDU Mini as well as a push button. The GPIO of the master (NRST of the two slaves) are configured as open drain output with a pull-up resistor and…

Hello, Thank you for your answer. I will try to get into the scripts you are talking about and I will let you know if I manage to do what I am aiming to. It is indeed a non-commercial project for now, the project just involve several MCU on the same board and it is not practical to flash them one by one. Thank you again for your help ! Regards, Théo

I have a J-Link EDU Mini. I cas succesfully program different STM32 MCU (F446 and F746) on the same JTAG bus as well as debug them at the same time. My question is now : is it possible to program multiple MCU at the same time in order to save some time. For example, let's assume I have 1 STM32F746 [#0] on my JTAG chain and the rest is 4 identical STM32F446 (#1, #2, #3, #4). Is there an option to flash the same program in the devices #1, #2, #3 and #4 at the same time (without changing my debug c…