make dm
- build binary file for flash persistant data,
- build C struct definition based on
data_model_def.json
make flash
- compile code and upload main program and flash data to MCU
- 1, define json data structure
- 2, initial values in python code
- 1, use hash256 to distinguish data model versions (structure difference)
- 2, use crc32-mpeg2 to verify struct data