Analog-way MIDRA PLATFORM TPP Current Programmer's Guide Manuale Utente Scaricare il pdf (Pagina 14)

PROGRAMMER'S GUIDE FOR v01.02.11

3.1 Establishing a connection with a Midra™

3.1.1 usage

This example gives you the proper way to establish the connection with a Midra™ device. It is made of

four recommended steps : socket opening, device type checking, command set version checking and

Midra™ registers read back.

3.1.2 summary of the commands sequence

 socket opening initial step, TCP/IP connection and device ready wait for.

 device type checking verifying the right expected device.

 command set version checking verifying matching of controller commands and machine commands.

 Midra™ registers read back machine current state retrieval.

3.1.3 detailed commands sequence

 socket opening : As indicated in §CONTROLING MIDRA chapter, TCP/IP must be used to control

Midra™. The device acts as a server. Once the TCP connection is established, the controller shall

check that the device is ready, by reading the READY status, until it returns the value 1.

Syntax : *

Answer : *<value>

The controller shall wait and retry until it receives the value 1.

 device type checking : This read only command gives the device type.

Syntax : ?

Answer : DEV<value>

The numerical <value> gives the

connected device type. Other values match other Analog Way devices.

 command set version checking : This read only command gives the

version number of the command set. It is recommended to check that

this value matches the one expected by the controller.

Syntax : VEvar

Answer : VEvar1

Meaning that the device is using a command set in version 1.

 Midra™ registers read back : This step is recommended to initialize the controller. Various

methods exist, depending on controller software architecture.

To ease this initialization step, the device features the DIESE command, to enumerate (read

back) all its registers current values. This produces a huge amount of data that can saturate the

controller. A command parameter allows reducing this volume by sending only register values

different from their default value. If the volume is still too high, the controller should enumerate

himself all the required registers, at its own rate.

<value>

device

257

Eikos2

258

Saphyr

259

Pulse2

260

SmartMatriX2

261

QuickMatriX

262

QuickVu

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Analog-way MIDRA PLATFORM TPP Current Programmer's Guide Manuale Utente Pagina 14

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