Texas Instruments Tiva TM4C123GH6PM - Page 15

Boot Loader
DFU Device Enumerated
Exit
Send DFU_GETSTATUS
No
Send DFU_DNLOAD with
a block of firmware
image data.
State is
ERROR?
Yes
State is
DNLOAD_SYNC
or DNBUSY?
State is
DNLOAD_IDLE?
More data
to send?
No
No
YesYes
Send DFU_DNLOAD with
a zero-length payload.
Report the error condition
Send DFU_GETSTATUS
Yes
No
State is
ERROR?
Yes
No
April 8, 2013 15