How to execute flash code for both the cores (CM7 ^ CM4) through I2C bootloader for STM32H745XI?

Vijay Pratap · ‎2022-10-11

Hi,

I am using STM32H745XI having Device ID: 0x450, Revision ID: V, Bootloader version: 0x90.I have pulled high Boot(pin), which is causing inbuilt bootloader to get executed. Both cores boot are enabled i.e. BCM4 & BCM7 are checked.Over i2c, I am able to communicate with bootloader and getting proper response for bootloader version, memory read/write command and go command.

below are the address and CRC for GO command:

(Address: 08000000 CRC: 08)

ACK is also received, but flash code is not getting executed (both 0x08000000 & 0x08100000, code are loaded).

Just to check the Flash code, I pulled down the Boot(pin) and observing both the cores behaving as per code.

can you please help me if i am missing anything in executing the code from flash.

FBL · ‎2022-11-08

Hello @Vijay Pratap,

Please check AN4221, 2.5 Go command section.

Make sure that the vector table is set correctly to point to the application address.

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