This is for CSR, device firmware upgrade problem:
- In most case, it seems we don't have to update boot loader, right ? so, I can implement H4 for easier. :D
- I am a little confusing, we just do a upgrade, DFU not like the FLASH rom upgrade, just read and write.
I mean, in my imaginings, it should like below:
===> DFU mode. ===> DFU_UPLOAD ===>DFU_UPLOAD_DATA DFU_UPLOAD_DATA DFU_RESET