I am using the AN12837SW reference design for my smart metering project with the MKM35Z512VLL7 controller. I have reviewed the firmware upgrade and bootloader code for "Firmware Upgrade through UART", but I still have some doubts. Could you please clarify the following points:
Which software tool should I use on the PC to test the firmware upgrade process?
How should I load the .bin file, divide it into 256-byte chunks, and add CRC data for transmission?
I have already reviewed the document AN12829, but I could not clearly understand the OTA frame format. Could you please explain this in more detail?
Is there any specific software tool or additional documentation available for testing the firmware upgrade feature?
