Issue Reading/Writing NOR Flash on OpenMV N6 with ST-Link v3

OpenMV Boards
1

Hi,

I am trying to flash custom firmware onto the OpenMV N6 board using ST-Link v3 and STM32CubeProgrammer.

I can connect to the MCU successfully, but I am unable to read from or write to the NOR Flash.

Could you please advise me on how to access or program the NOR Flash?

2

Hi, you need to put the chip in dev mode using BOOT1. See the switch above the header, and then you can use the board like any other ST dev board.

3

Hi, I set the BOOT1 pin to ‘ON’ and successfully connected STM32CubeProgrammer to the N6 MCU. However, I am unable to read from or write to the NOR Flash on the OpenMV N6 board.

4

Here’s what we use to factory-provision the system:

FlashLayout.zip (33.7 KB)

The flash loader maps to what the st tools use to understand things. You probably need to load that onto the board to access it.