ljmf00 / motospeedv40-re

Motospeed V40 Mouse Reverse Engineering

motospeedv40-re

Motospeed V40 Mouse Reverse Engineering

See more, here.

Specifications

• Manufacturer: Mototech Technology Group Ltd
• Optical Sensor: Avago ADNS-3050 (Datasheet)
• MCU: Holtek HT82F553 8-bit (No Datasheet)
• Firmware: Here
• Driver: Here

Protocol

To achieve this protocol description, I got some packets from the Windows driver using Wireshark. See here.

Commands

HID Feature report packets size: 8 bytes HID Output report packets size: 32 bytes

Command 0x28: Init

• Activate DPI triggers: {0xb2, 0x0d, 0x08, 0x78, 0x32, 0xe6, 0xee}

Command 0x26: General

• Change LED colors: {0x95, 0xf5, 0x08, 0x80, 0x95, 0xa6, 0x36}

  Structure: Next output report packet, 24-bit color for each profile, with 4 total profiles.

• Change DPI: {0x94, 0x95, 0x08, 0x58, 0x9d, 0xa6, 0xb6}

  Structure: Next output report packet, 1 byte for each profile, with 4 total profiles.

• Change Report Rate: {0x94, 0xf5, 0x08, 0xb8, 0x1d, 0xa6, 0x76}

Mouse triggers

• Change of DPI's

  • Endpoint: 0x02
  • Magic bytes: {0x06, 0x07, 0x01}

  The fourth byte is for the current DPI mode.

  Example Packet:

  06 07 01 04
  06 00 00 00
  

DPI Levels

Byte	DPI Value
01	250
02	500
03	750
04	1000
05	1250
06	1500
07	1750
08	2000
25	2500
26	3000
27	3500
28	4000

NOTE: To disable the DPI profile, do a bitwise OR with the value and 0x80, which in practice is the most significant bit. (e.g.: enabled profile 1 is 0x01 and disabled profile 1 is 0x81).