Hi,
I'm working on firmware upgrade functionality for an STM32G491 series MCU. In our system, the MCU communicates with a processor over I2C, where the processor acts as the master and the MCU as the slave. Currently, we're using I2C1 on the MCU for this communication.
However, as per AN2606, I2C1 is not supported in boot mode for firmware flashing, which limits our ability to use standard ISP. Therefore, we're exploring the option of using In-Application Programming (IAP) over I2C1.
Is it possible to perform IAP using I2C1 in this configuration? If so, could you point me to any sample code or reference implementations?
