X-keys XK-24 Android Data Report
General Information
VID
|
05f3h
|
---|---|
XK-24 Android PID #1
|
049Ch or 1180
|
XK-24 Android PID #2
|
049Dh or 1181
|
XK-24 Android PID #3
|
049Eh or 1182
|
XK-24 Android PID #4
|
049Fh or 1183
|
Consumer Usage Page
|
1
|
Usage Page
|
000Ch or 12
|
PID #1 Endpoints: Consumer Usge Page Input and Output (Hid Usage Page 12,
Hid Usage 1), Mouse (Hid Usage Page 1, Hid Usage 2), Joystick (Hid Usage
Page 1, Hid Usage 4).
PID #2 Endpoints: Consumer Usge Page Output (Hid Usage Page 12, Hid Usage
1), Mouse (Hid Usage Page 1, Hid Usage 2), Keyboard (Hid Usage Page 1, Hid
Usage 6) and Multimedia (Hid Usage Page 12 and 1, Hid Usage 1 and 128).
The use of this PID is mainly for Hardware Mode. Hardware Mode allows users
to store macros to the device itself using the MacroWorks 3.1 programming
utility or the X-keys Android app. Once the macros are stored they will
work on any computer or OS that supports HID.
PID #3 Endpoints: Consumer Usge Page Output (Hid Usage Page 12, Hid Usage
1), Mouse (Hid Usage Page 1, Hid Usage 2), Joystick (Hid Usage Page 1, Hid
Usage 4) and Multimedia (Hid Usage Page 12 and 1, Hid Usage 1 and 128).
The use of this PID is mainly for Hardware Mode. Hardware Mode allows users
to store macros to the device itself using the MacroWorks 3.1 programming
utility or the X-keys Android app. Once the macros are stored they will
work on any computer or OS that supports HID.
PID #4 Endpoints: Consumer Usge Page Input and Output (Hid Usage Page 12,
Hid Usage 1), Boot Mouse (Hid Usage Page 1, Hid Usage 2), Boot Keyboard
(Hid Usage Page 1, Hid Usage 6). This endpoint is not Android compatible,
ie, the Android OS will not be able to get a handle to it and communicate
with it due to the Boot Keyboard. Android recognizes a device in this PID
as an external hardware keyboard.
The XK-24 Android is an Android enabled device in PIDs #1, #2 or #3. This means the device can be enumerated, read (if input report available), and written to on Android OS that support host USB, generally 3.1 or higher. Android OS is not able to enumerate a device with a boot keyboard and thus if the device is in PID #4 it will appear to the Android OS as only a hardware keyboard/mouse, you will not be able to get a handle to it but it will work as a keyboard/mouse assuming there are hardware macros recorded on the keys.
XK-24 Android is supported by P.I. Engineering Macroworks 3.1 for PC users, X-keys Android for Android users, P.I. Engineering SDK samples for Microsoft C# Express, VB Express, Microsoft C++ 2010 and Eclipse and Linux.
X-keys XK-24 Android Input Report
Figure 1: X-keys XK-24 Android.
Report Length: 37 bytes (PC), 36 (Android)
1. General Incoming Data
This data is returned when new data is detected such as button presses or unit id change. This report can be manually stimulated by sending an output report: Generate Data which is very useful for obtaining the initial state of the device immediately after enumeration. This report is available only in PID #1 and PID #4.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Byte 8
|
Bytes 9-32
|
Bytes 33-36
|
Byte 37
|
Constant | Unit ID | Data Type | Keys | Keys | Keys | Keys | NumLck, CapsLck, ScrLck | Reserved | Time Stamp | # of times rebooted |
ID
|
<data>
|
DT
|
D1
|
D2
|
D3
|
D4
|
D5
|
value
|
Time
|
Reboot
|
ID: The report ID=0 and is not present on Android OS which is the
reason for the differeing report lengths between the PC and Android.
DT: Data Type value of 0 or 2 indicates the following data is a General
Incoming Data report, 2 if generated by the output report: Generate Data.
Data Type value of 214 indicates a Descriptor Data Report, see below. Data
Type value of 224 indicates a Custom Data Report, see below. Bit 1 is set
if program switch is pressed. The program switch is located on the top of
the unit.
D1: For all bits 0 for key up, 1 for key down. Bit
1=Key 0, bit 2=Key 1, bit 3=Key 2, bit 4=Key 3, bit 5=Key 4, bit 6=Key 5,
bits 7-8=0 always.
D2: For all bits 0 for key up, 1 for key down. Bit
1=Key 8, bit 2=Key 9, bit 3=Key 10, bit 4=Key 11, bit 5=Key 12, bit 6=Key
13, bits 7-8=0 always.
D3: For all bits 0 for key up, 1 for key down. Bit
1=Key 16, Bit 2=Key 17, bit 3=Key 18, bit 4=Key 19, bit 5=Key 20, bit 6=Key
21, bits 7-8=0 always.
D4: For all bits 0 for key up, 1 for key down. Bit
1=Key 24, Bit 2=Key 25, bit 3=Key 26, bit 4=Key 27, bit 5=Key 28, bit 6=Key
29, bits 7-8=0 always.
D5: Bit 1=NumLock, bit 2=CapsLock, bit 3=ScrLock, bit 4=On Boot (sets
the bit when device is booted up by the usb then sets it back to 0), bit
5=program switch.
Time: If enabled using output report: Enable Time Stamp gives a time
in ms starting from when the device was plugged into a port in 4 bytes where
byte 36 is the LSB or low byte and byte 33 is the MSB or high byte.
Reboot: This is a number that indicates how many times
the device has been rebooted by the USB.
2. Descriptor Data
This data is returned after an output report: Request for Descriptor is sent. This report is available only in PID #1 and PID #4.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Byte 8
|
Byte 9
|
Byte 10
|
Byte 11
|
Byte 12
|
Byte 13
|
Byte 14
|
Byte 15
|
Byte 16
|
Byte 17
|
Bytes 18-37
|
Constant | Unit ID | Data Type | Mode | Key mapstart | Layer2 Offset | Constant | Constant | Max Columns | Max Rows | LED State | Firmware Version | PID Low | PID Hi | Keymapstart Hi | Max Macro Address Lo | Max Macro Address Hi | Reserved |
ID
|
<data>
|
214
|
Mode
|
32
|
130
|
12
|
192
|
4
|
6
|
LEDs
|
<data>
|
PIDL
|
PIDH
|
0
|
MMAL
|
MMAH
|
value
|
ID: The report ID=0 and is not present on Android OS which is the
reason for the differeing report lengths between the PC and Android.
Mode: 0 means device is in PID #1, 1 = PID #2, 2 = PID #3, 3 = PID #4.
LEDs: Bit 7 set means Green LED is on, bit 8 set means Red LED is
on.
PIDL: LSB of the Product Identification number or PID.
PIDH: MSB of the Product Identification number or PID.
MMAL: LSB of the maximum macro address, for internal use only.
MMAH: MSB of the maximum macro address, for internal use only.
3. Custom Data
This data is returned after an output report: Generate Custom Data is sent. This report is available only in PID #1 and PID #4.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Bytes Count+5 to 36
|
Byte 37
|
Constant | Unit ID | Data Type | Count of custom bytes to follow | Custom byte 1 | Custom byte 2 | Custom byte 3... | Reserved | Increment |
ID
|
<data>
|
224
|
Count
|
B1
|
B2
|
B3...
|
value
|
Increment
|
ID: The report ID=0 and is not present on Android OS which is the
reason for the differeing report lengths between the PC and Android.
Count: Number of custom bytes to follow.
B1: 1st custom byte.
B2: 2nd custom byte.
B3: 3rd custom byte and so on for as many bytes as specified in Count.
Increment: This byte is incremented each time a Custom Data report
is sent thus even if 2 identical reports are sent they will both come in
even if SuppressDuplicate reports is on.
X-keys XK-24 Android Output Report
The following types of output reports are shown in the summary below. Available for all PIDs. Note, the first byte listed in this documentation is 0 and represents the report ID. This is not present on Android. So when sending an output report on Android, eliminate this byte. Please be aware that several of these commands result in writing to the device's eeprom which has a limit to the number of writes allowed before it is "burnt out". The manufacturer's specification is 50,000 eeprom writes. Because of this we recommend the commands designated with e be executed rarely and not within timing loops.
Report
|
Format
|
Description
|
---|---|---|
1
|
0, 179, LEDIndex, State, 0... | Index Based Set LED (Flash) |
2
|
0, 189, UnitID, 0... | Set Unit IDe |
3
|
0, 180, Freq, 0... | Set Frequency of Flash |
4
|
0, 214, 0... | Request Descriptor |
5
|
0, 210, Enable, 0... | Enable Time Stamp |
6
|
0, 177, 0... | Generate Data |
7
|
0, 224, Count, B1, B2, B3..., 0... | Generate Custom Data |
8
|
0, 204, Mode, 0... | Change PIDe |
9
|
0, 201, Modifier, 0, HC1, HC2, HC3, HC4, HC5, HC6, 0... | Keyboard Reflector (PID #2 and #4 only) |
10
|
0, 203, Buttons, Mouse X, Mouse Y, 0, Wheel Y, 0... | Mouse Reflector |
11
|
0, 202, Joystick X, Joystick Y, Joystick Z rot., Joystick Z, Joystick Slider, Game Buttons 1, Game Buttons 2, Game Buttons 3, Game Buttons 4, 0, Point of View Hat, 0... | Joystick Reflector (PID #1 and #3 only) |
12
|
0, 225, Usage ID LSB, Usage ID MSB, 0... | Multimedia Reflector (PID #2 and #3) |
13
|
0, 195, Version LSB, Version MSB, 0... | Set Version Numbere |
14
|
0, 238, 0... | Reboot Device |
15
|
0, 187, Bank 1 Intensity, Bank 2 Intensity, 0... | Set Backlight Intensity |
16
|
0, 184, 0... | Toggle Backlights |
17
|
0, 182, Bank, OnOff, 0... | Turn On/Off Rows of Backlights |
18
|
0, 181, Index, State, 0... | Index Based Set Backlights (Flash) |
19
|
0, 173, Bank, IncDec, Wrap, 0... | Incremental Change of Backlight Intensity |
20
|
0, 199, Save, 0... | Save Backlight State to EEPROMe |
eCommand writes to EEPROM, do not
perform this command excessively, do not exceed 50,000 writes to EEPROM.
Endpoint: Vendor Defined Usage Page.
Report Length: 36 bytes (PC), 35 (Android).
1. Index Based Set LED (Flash)
Send this output report to control the LEDs and the 2 additional digial outputs.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 5-36
|
Constant | Command | LED Index | LED State | Constant |
0
|
179
|
LEDIndex
|
LEDState
|
0
|
LEDIndex: 0=Out 1, 1=Out 2, 6 = Green LED, 7 = Red LED.
LEDState: 0 = off, 1 = on and 2 = flash. Set the frequency of the
flash with output report: Set Frequency of Flash.
2. Set Unit ID
Send this output report to set the Unit ID of the device. This is useful if connecting more than one of the same device to the a computer.
Byte 1*
|
Byte 2
|
Byte 3
|
Bytes 4-36
|
Constant | Command | Unit ID (0-255) | Constant |
0
|
189
|
value
|
0
|
3. Set Frequency of Flash
Send this output report to control the frequency of the flashing of the indicator LEDs.
Byte 1*
|
Byte 2
|
Byte 3
|
Bytes 4-36
|
Constant | Command | Frequency | Constant |
0
|
180
|
Freq
|
0
|
Freq: 1-255 where 1 is the fastest flash and 255 is the slowest. 255 is approximately 4 seconds between flashes.
4. Request Descriptor
After sending this output report a Descriptor input report will be generated.
Byte 1*
|
Byte 2
|
Bytes 3-36
|
Constant | Command | Constant |
0
|
214
|
0
|
5. Enable Time Stamp
By default the Time Stamp feature is enabled. To turn off send this command with Byte 3=0.
Byte 1*
|
Byte 2
|
Byte 3
|
Bytes 4-36
|
Constant | Command | Enable | Constant |
0
|
210
|
0=off, 1=on
|
0
|
6. Generate Data
After sending this output report a General Incoming Data input report will be generated with bit 2 of PS set. This is useful in determining the initial state of the device before any data has changed.
Byte 1*
|
Byte 2
|
Bytes 3-36
|
Constant | Command | Constant |
0
|
177
|
0
|
7. Generate Custom Data
After sending this output report a Custom Data input report will be generated with Byte 3 set to 224 and the count and custom bytes following.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6...
|
Bytes (Count+4) to 36
|
Constant | Command | Count of custom bytes to follow | Custom byte 1 | Custom byte 2 | Custom byte 3... | Constant |
0
|
224
|
Count
|
B1
|
B2
|
B3...
|
0
|
Count: Number of custom bytes to follow.
B1: 1st custom byte.
B2: 2nd custom byte.
B3: 3rd custom byte and so on for as many bytes as specified in Count.
8. Change PID
Send this output report to change between the four PIDs. This needs to be done if the user wishes a different combination of endpoints. The combinations are described above.
Byte 1*
|
Byte 2
|
Byte 3
|
Bytes 4-36
|
Constant | Command | Mode | Constant |
0
|
204
|
Mode
|
0
|
Mode: 0 for PID #1, 1 for PID #2, 2 for PID #3 and 3 for PID #4.
PID #1 Endpoints: Consumer Usge Page Input and Output (Hid Usage Page 12,
Hid Usage 1), Mouse (Hid Usage Page 1, Hid Usage 2), Joystick (Hid Usage
Page 1, Hid Usage 4).
PID #2 Endpoints: Consumer Usge Page Output (Hid Usage Page 12, Hid Usage
1), Mouse (Hid Usage Page 1, Hid Usage 2), Keyboard (Hid Usage Page 1, Hid
Usage 6) and Multimedia (Hid Usage Page 12 and 1, Hid Usage 1 and 128).
The use of this PID is mainly for Hardware Mode. Hardware Mode allows users
to store macros to the device itself using the MacroWorks 3.1 programming
utility or the X-keys Android app. Once the macros are stored they will
work on any computer or OS that supports HID.
PID #3 Endpoints: Consumer Usge Page Output (Hid Usage Page 12, Hid Usage
1), Mouse (Hid Usage Page 1, Hid Usage 2), Joystick (Hid Usage Page 1, Hid
Usage 4) and Multimedia (Hid Usage Page 12 and 1, Hid Usage 1 and 128).
The use of this PID is mainly for Hardware Mode. Hardware Mode allows users
to store macros to the device itself using the MacroWorks 3.1 programming
utility or the X-keys Android app. Once the macros are stored they will
work on any computer or OS that supports HID.
PID #4 Endpoints: Consumer Usge Page Input and Output (Hid Usage Page 12,
Hid Usage 1), Boot Mouse (Hid Usage Page 1, Hid Usage 2), Boot Keyboard
(Hid Usage Page 1, Hid Usage 6).
9. Keyboard Reflector
Sends native keyboard messages. Must have the device set to a PID with a keyboard endpoint; PID #4 or PID #2.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Byte 8
|
Byte 9
|
Byte 10
|
Bytes 11-36
|
Constant | Command | Modifier | Constant | Hid Code 1 | Hid Code 2 | Hid Code 3 | Hid Code 4 | Hid Code 5 | Hid Code 6 | Constant |
0
|
201
|
Modifier
|
0
|
HC1
|
HC2
|
HC3
|
HC4
|
HC5
|
HC6
|
0
|
Modifier: Bit 1=Left Ctrl, bit 2=Left Shift, bit 3=Left Alt, bit
4=Left Gui, bit 5=Right Ctrl, bit 6=Right Shift, bit 7=Right Alt, bit 8=Right
Gui.
HC1=Hid Code for 1st key down, or 0 to release previous key press
in this byte position.
HC2=Hid Code for 2nd key down, or 0 to release previous key press
in this byte position.
HC3=Hid Code for 3rd key down, or 0 to release previous key press
in this byte position.
HC4=Hid Code for 4th key down, or 0 to release previous key press
in this byte position.
HC5=Hid Code for 5th key down, or 0 to release previous key press
in this byte position.
HC6=Hid Code for 6th key down, or 0 to release previous key press
in this byte position.
10. Mouse Reflector
Sends native mouse messages.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Bytes 8-36
|
Constant | Command | Buttons | Mouse X | Mouse Y | Constant | Wheel Y | Constant |
0
|
203
|
Buttons
|
X
|
Y
|
0
|
WY
|
0
|
Buttons: Bit 1=Left, bit 2=Right, bit 3=Center, bit 4=XButton1,
bit 5=XButton2.
X=Mouse X motion. 128=0 no motion, 1-127 is right, 255-129=left,
finest inc (1 and 255) to coarsest (127 and 129).
Y=Mouse Y motion. 128=0 no motion, 1-127 is down, 255-129=up, finest
inc (1 and 255) to coarsest (127 and 129).
WY=Wheel Y. 128=0 no motion, 1-127 is up, 255-129=down, finest inc
(1 and 255) to coarsest (127 and 129).
Example 1: Move mouse 1 mickey, the finest increment.
x+: 0, 203, 0, 1, 0, 0, 0
x-: 0, 203, 0, 255, 0, 0, 0
y+: 0, 203, 0, 0, 1, 0, 0
y-: 0, 203, 0, 0, 255, 0, 0
Example 2: Wheel Y with increment of 5.
+ motion: 0, 203, 0, 0, 0, 0, 5
- motion: 0, 203, 0, 0, 0, 0, 250 where 250=255-5
Example 3: Left button click.
left button down: 0, 203, 1, 0, 0, 0, 0
left button up: 0, 203, 0, 0, 0, 0, 0
Example 4: Left button down and drag
with mouse at starting position: 0, 203, 1, 0, 0, 0, 0
move mouse with button down: 0, 203, 1, 30, 30, 0, 0
release button: 0, 203, 0, 0, 0, 0, 0
11. Joystick Reflector
Sends native joystick messages. Must have the device set to a PID with a joystick endpoint; PID #1 or PID #3.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Byte 6
|
Byte 7
|
Byte 8
|
Byte 9
|
Byte 10
|
Byte 11
|
Byte 12
|
Byte 13
|
Bytes 14-36
|
Constant | Command | Joystick X | Joystick Y | Joystick Z rot. | Joystick Z | Joystick Slider | Game Buttons | Game Buttons | Game Buttons | Game Buttons | Constant | Point of View Hat | Constant |
0
|
202
|
X
|
Y
|
Z rot.
|
Z
|
Slider
|
GB1
|
GB2
|
GB3
|
GB4
|
0
|
Hat
|
0
|
X: Joystick X, 0-127 is from center to full right, 255-128 is from
center to full left.
Y: Joystick Y, 0-127 is from center to bottom, 255-128 is from center
to top.
Z rot.: Joystick Z rot., 0-127 is from center to bottom, 255-128
is from center to top.
Z.: Joystick Z, 0-127 is from center to bottom, 255-128 is from center
to top.
Slider: Joystick Slider, 0-127 is from center to bottom, 255-128
is from center to top.
GB1: Game buttons 1-8, bit 1= game button 1, bit 2=game button 2,
etc.
GB2: Game buttons 9-16, bit 1= game button 9, bit 2=game button 10,
etc.
GB3: Game buttons 17-24, bit 1= game button 17, bit 2=game button
18, etc.
GB4: Game buttons 25-32, bit 1= game button 25, bit 2=game button
26, etc.
Hat: 0 to 7 clockwise, 8 is no hat.
12. Multimedia Reflector
Sends 2 byte multimedia messages. Must have the device set to a PID with a multimedia endpoint; PID #2 or PID #3. When in this PID there is no input data report available thus users of this feature will not be able to read any data, only write output reports. If desiring this feature users are instructed to use MacroWorks 3.1 programming utility for programming of the buttons and converting to a multimedia PID. This command must be followed with an "up" command with ULo and UHi =0.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 8-36
|
Constant | Command | Usage ID Lo | Usage ID Hi | Constant |
0
|
225
|
ULo
|
UHi
|
0
|
ULo=Usage ID low byte see hut1_12.pdf, pages 75-85 Consumer Page.
UHi=Usage ID high byte see hut1_12.pdf, pages 75-85 Consumer Page.
Example: My Computer - 0, 225, 94, 01, 0... and send report using WriteData. Then 0, 225, 0, 0, 0... and send report using WriteData. In this example 0194 is the Usage ID for My Computer.
13. Set Version Number
Send this output report to set the Version of the device. This is not the firmware version given in the descriptor but a 2 byte number available on enumeration. The value is "remembered" so if it is changed, using this report, the device must be rebooted. The device can be rebooted by replugging it or by sending the output report : Reboot Device. The device is also rebooted when changing pids using output report: Change PID.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 5-36
|
Constant | Command | Version LB (0-255) | Version HB (0-255) | Constant |
0
|
195
|
value
|
value
|
0
|
14. Reboot Device
Send this output report to reboot the device without having to unplug it. After sending this report the device must be re-enumerated.
Byte 1*
|
Byte 2
|
Bytes 3-36
|
Constant | Command | Constant |
0
|
238
|
0
|
15. Set Backlight Intensity
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 5-36
|
Constant | Command | Bank 1 Intensity | Bank 2 Intensity | Constant |
0
|
187
|
Intensity
|
Intensity
|
0
|
Intensity: 0-255 where 0 is no intensity for that color or off,
and 255 is the brightest.
16. Toggle Backlights
Byte 1*
|
Byte 2
|
Bytes 3-36
|
Constant | Command | Constant |
0
|
184
|
0
|
17. Turn On/Off Rows of Backlights
Send this output report to either turn on or off rows of the backlights.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 5-36
|
Constant | Command | Bank # | State | Constant |
0
|
182
|
Bank
|
OnOff
|
0
|
Bank: 0 = bank 1, 1 = bank 2.
OnOff: For all bits 0 for no backlighting, 1 for backlighting. Bit
0 = 1st row, bit 1=2nd row, bit 2=3rd row, bit 3=4th row, bit 4=5th row,
bit 5=6th row. Note the intensities are not affected by this command.
18. Index Based Set Backlights (Flash)
Control of individual backlights.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Bytes 5-36
|
Constant | Command | Key Index | State | Constant |
0
|
181
|
Index
|
State
|
0
|
Index: For bank 1 equals the index given in Figure 1. For bank 2
add 32 to the index given in Figure 1. For example to control the lower
left key bank 1 index=5, the corresponding bank 2 is index=37.
State: 0 = off, 1 = on and 2 = flash. Set the frequency of the flash
with output report: Set Frequency of Flash.
19. Incremental Change of Backlight Intensity
Send this output report consecutively to step through 10 levels of intensity of the backlights.
Byte 1*
|
Byte 2
|
Byte 3
|
Byte 4
|
Byte 5
|
Bytes 6-36
|
Constant | Command | Bank # | Increment/Decrement | Wrap/No Wrap | Constant |
0
|
173
|
Bank
|
IncDec
|
Wrap
|
0
|
Bank: 0 = bank 1, 1 = bank 2.
IncDec: 0=decrease, the intensity will decrease each time this command
is sent and either wrap around to the brightest setting or stay off depending
on Wrap or 1=increase, the intensity with increase each time this
command is sent and either wrap around to off or stay at the brightest setting
depending on Wrap.
Wrap: 0=wrap, when the highest (or lowest depending on IncDec)
intensity setting it reached the next command will wrap around to the lowest
(or highest depending on IncDec), 1=No wrap, when the highest (or
lowest) intensity setting is reached consecutive commands will do nothing.
20. Save Backlight State to EEPROM
Send this output report to change the default backlighting on startup of device to the current backlight state, ie, what ever backlights are on or off at the time this report is sent will be the new default.
Byte 1*
|
Byte 2
|
Byte 3
|
Bytes 4-36
|
Constant | Command | Save | Constant |
0
|
199
|
Save
|
0
|
Save: Any value other than 0 will save the current backlight state to the EEPROM so when the device is replugged it will display this save backlighting. Note because there is a limited number of times the EEProm can be written to, it is not a good idea to do this often.
*This first byte may be omitted on some non-PC operating systems. On these systems the read and write lengths will be 1 byte smaller.