Figure 53. Dfu_Upload Request: Device Side; Figure 54. Dfu_Upload Request: Host Side - ST STM32F105 Series Application Note

AN2662 DFU bootloader

Figure 53. DFU_UPLOAD request: Device side

DFU_UPLOAD request
Current status is
No
dfuIDLE or dfuUPLOAD-IDLE
Yes
Stall
Acknowledge
the request
No
wBlockNum == 0 ?
Yes
No
wBlockNum > 1?
Yes
Stall
No
ROP Active?
Yes
Send the supported
Send the requested State = dfuERROR
number of data bytes command codes
Status = errVENDOR

Figure 54. DFU_UPLOAD request: Host side

DFU_UPLOAD request
No
Request acknowledged?
Get Device Status
No
Status == errVENDOR
?
Yes
Read the requested
Read Protection
Error
number of data bytes
Is active
Doc ID 14156 Rev 1 71/83