PoLabs Pokeys 57E Handleiding

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PoKeys protocol specicaon

Version: 21.12.2016

Compable PoKeys rmware versions:

PoKeys57: 2.4. 19

Brief protocol description

USB

PoKeys USB devices are USB HID device that use OS's integrated drivers to communicate with soware. No s

addional drivers are neccessary to communicate with devices.

All PoKeys USB devices use these Vendor and Product IDs:

idVendor: 0x1DC3

idProduct: 0x1001

The device encapsulates three interfaces, rst (index 0) being standard USB HID keyboard, second (index 1)

being PoKeys communicaon interface and the third (index 2) standard USB HID Joysck.

Conguraon is set or read using the second interface. On Windows host the PoKeys device is found by

searching among connected HID devices and looking their PathNames. If the PathName contains

hid#vid_1dc3&pid_1001&mi_01, this is the correct interface to PoKeys device. If more than one PoKeys device

is connected to the same host, dierenation at this level is impossible, so user ID byte must be read from the

PoKeys device. USB serial numbers can be used to dierenate between devices. PoKeys device reports serial

number in the format of xxxxx.2 (where xxxxx is the serial number of the PoKeys device).

In PoKeys communicaon DLL, request are handled this way:

1. send report with a unique request ID (simply ever-increasing value)

2. read report

3. check Requst ID, if it does not match the one in (1), sleep for 1 ms and then go to (2) (try this 5  s, me

then terminate)

4. check packet checksum, if it does not match go to (1) (try this 2 mes, then terminate)

PoKeys57 series rmware introduces bulk communicaon interface in addion to the HID interfaces menoned

above - it uses WinUSB driver on Windows (GUID of 2EA10865-4FFD-4BF3-8EF3-161549BFA270) and libusb on

Linux and OS X. Oponally, HID interfaces can be disabled.

Communication

To ensure a highest possible compability with USB PoKeys devices, ethernet PoKeys devices use Extended

packet mode as described below. Packets are transfered with TCP protocol.

Network edition

Ethernet PoKeys devices use a combinaon of UDP and TCP packets to communicate with the host. Both use a

port number 20055.

Device discovery

PoKeys devices are discovered via broadcast UDP packets. A host sends out a UDP packet with a broadcasng

address. All PoKeys devices respond with another UDP packet that contains the device's idencaon (User ID,

serial number, version) and it's IP address. At the same me, if device is congured to use DHCP server and no

DHCP server responded to the request, PoKeys will use the temporary address of x.x.x.250, where x.x.x is the

subnet address of the computer that the request was sent from (with 255.255.255.0 subnet mask).

Packet data is formated the following way:

Host -> device: empty packet (ignored)

Device -> host

- byte 1: User ID number

- bytes 2,3: Serial number

- bytes 4,5: Version

- bytes 6,7,8,9: IP address

Communication

All further communicaon with the device is acomplished with TCP or UDP connecon on port 20055. Packet

structure is 64-bytes long and is described below as Extended packet mode.

Security

Ethernet PoKeys devices support addional security opon that requires the user to enter the password before

the access to the device is granted. The password can contain any character and can be up to 32 characters

long.

Connection timeout

Aer 3 seconds of inacvity (or otherwise specied in the conguraon), ethernet PoKeys device terminates

the TCP connecon with the host.

Packet formatting

Incoming and outgoing packets are 64 bytes long. Basic packets use only rst 8 bytes. Extended packets use the

whole packet.

Host>Device

- byte 1: control 0xBB

- byte 2: operaon

- byte 3-6: operaon parameters

- byte 7: request ID

- byte 8: control byte (sum aer mod 0x100)

Device>Host

- byte 1: control 0x AA

- byte 2: operaon

- byte 3-6: operaon parameters

- byte 7: request ID

- byte 8: control byte (sum aer mod 0x100)

Extended packet mode (supported since version 1.8)

Packet size is increased to 64 bytes. First 8 bytes remain the same, addional 56 bytes are used for extended

mode. Reserved bytes should be set to 0.

Product specificaties

Merk:	PoLabs
Categorie:	Niet gecategoriseerd
Model:	Pokeys 57E

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