In order to use the S32K310 chip as a sub-MCU, we plan to load the HSE firmware and add our development source code so that it communicates with the main MCU via SPI. We are considering directly flashing the S32K310 chip using a gang programmer without using JTAG or similar methods. However, our research shows that the HSE firmware must be loaded first, and then the development firmware is added. Therefore, we are inquiring whether there is any way during the development phase to integrate the HSE and the development firmware into a single binary firmware. It would be ideal to flash just one firmware image.
