check sum validation, may skip flashing of block #389
Description
Is your feature request related to a problem? Please describe.
The uf2 specification refers to the optional checksum within each uf2 block. This checksum can be used to skip flashing of flash pages without any changes in the content.
Describe the solution you'd like
Implementing checksum verification during flashing can allow skipping flash pages, speed up the flashing process, and reduce wear out.
Additional context
Uf2 Spec
https://github.com/microsoft/uf2/blob/90e9741f217f5a40c98ba74d663e408041037578/README.md?plain=1#L258-L276
It appears that ESP has implemented this feature; let’s not fall behind! :-D