DFU_DNLOAD request commands

AN3156

14/26

DocID017068 Rev 4

5

DFU_DNLOAD request commands

The download request is used to perform different commands. The command selection is

done through the value of parameter wValue in the USB request structure. The following

operations are supported:

•

Write Memory (wValue > 1)

•

Set Address Pointer (wValue = 0 and first byte = 0x21)

•

Erase (wValue = 0 and first byte = 0x41)

•

Read Unprotect (wValue = 0 and first byte = 0x92)

•

Leave DFU (leave DFU mode and Jump to application)