3M C3266PW Manual De Usuario
38
3M™ Multi-Touch Chassis Display User Guide
3M Touch Systems, Inc. Proprietary Information – TSD-39373 REV E
Set Feature - Reset
This is a request to perform a controller reset. Soft resets are automatic after any block
parameter changes.
parameter changes.
Table 11. Reset - Setup Stage
Offset Field
Size
Value
Description
0
bmRequestType
1
0x21
Class,H2D,Interface
1
bRequest
1
0x09
Set Report
2
wValue
2
0x0303
msb=03=Feature
lsb=03= Feature Report ID
lsb=03= Feature Report ID
4
wIndex
2
0
Always 0
6
wLength
2
8
Always 8
Table 12. Reset – Data Stage
Offset Field
Size
Value
Description
0
Report ID
1
0x03
Feature Report ID
1
Report Subtype
1
0x07
Indicates a reset request
2
bResetType
1
0x01
0x02
0x02
Soft Reset
Hard Reset
Hard Reset
3--7
5
0
Not used
A Hard Reset will cause the controller to re-enumerate.
In the case of a Soft Reset, after sending the command, the controller will acknowledge
(ACK) the transfer, but the command will not yet be completed. Before sending any
other commands, the host should poll with GetStatus until the command status field
returns “Soft Reset Occurred,” “Command Complete,” or “Fail”. Any timeout for this
status polling should be 2 seconds minimum.
(ACK) the transfer, but the command will not yet be completed. Before sending any
other commands, the host should poll with GetStatus until the command status field
returns “Soft Reset Occurred,” “Command Complete,” or “Fail”. Any timeout for this
status polling should be 2 seconds minimum.
Set Feature –Restore Defaults
This is a request to restore parameter defaults.
Table 13. Restore Defaults -- Setup Stage
Offset Field
Size
Value
Description
0
bmRequestType
1
0x21
Class,H2D,Interface
1
bRequest
1
0x09
Set Report
2
wValue
2
0x0303 msb=03=Feature
lsb=03= Feature Report ID
4
wIndex
2
0
Always 0
6
wLength
2
8
Always 8