13
AT89C5132
4256A–USB–06/03
Device Status
Get Status The Host employs the DFU_GETSTATUS request to facilitate synchronization with the
device. This status gives information on the execution of the previous request: in
progress/OK/Fail/...
The device responds to the DFU_GETSTATUS request with a payload packet contain-
ing the following data:
bmRequestType bRequest wValue wIndex wLength Data
1010 0001b DFU_GETSTATUS (3) Zero Interface (4) 6 Status
0010 0001b DFU_CLRSTATUS (4) Zero Interface (4) Zero none
Table 9. DFU_GETSTATUS Response
Offset Field Size Value Description
0 bStatus 1 Number An indication of the status resulting from the execution of the most recent request.
1 bwPollTimeOut 3 Number
Minimum time in milliseconds that the host should wait before sending a subsequent
DFU_GETSTATUS. The purpose of this field is to allow the device to dynamically adjust
the amount of time that the device expects the host to wait between the status phase of
the next DFU_DNLOAD and the subsequent solicitation of the device’s status via
DFU_GETSTATUS.
4 bState 1 Number
An indication of the state that the device is going to enter immediately following
transmission of this response.
5 iString 1 Index Index of status description in string table.
Table 10. bStatus Values
Status Value Description
OK 0x00 No error condition is present
errTARGET 0x01 File is not targeted for use by this device
errFILE 0x02 File is for this device but fails some vendor-specific verification test
errWRITE 0x03 Device id unable to write memory
errERASE 0x04 Memory erase function failed
errCHECK_ERASED 0x05 Memory erase check failed
errPROG 0x06 Program memory function failed
errVERIFY 0x07 Programmed memory failed verification
errADDRESS 0x08 Cannot program memory due to received address that is out of range
errNOTDONE 0x09 Received DFU_DNLOAD with wLength = 0, but device does not think it has all the data yet
errFIRMWARE 0x0A Device’s firmware is corrupted. It cannot return to run-time operations
errVENDOR 0x0B iString indicates a vendor-specific error
errUSBR 0x0C Device detected unexpected USB reset signaling
(48 Seiten)
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