3M C3266PW Guide de l'utilisateur télécharger pdf (Page 36)

36 3M™ Multi-Touch Chassis Display User Guide

3M Touch Systems, Inc. Proprietary Information – TSD-39373B

Set Feature - Reset

This is a request to perform a controller reset. Soft resets are automatic after any block

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

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

Soft 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.

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

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 53 54

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3M C3266PW Guide de l'utilisateur Page 36