Mint NextMove PCI Manual de usuario descargar pdf (Pagina 28)

5-8 Advanced Features

5.3 Command prompt

As well as the MintTerminal object the MintMT ActiveX control also has a MintCommandPrompt object that

works with the MintController object. This allows the user to enter lines of MintMT code that will be

compiled and executed in the window.

The form must have a MintController object for the MintCommandPrompt object to function. All

communications to and from a controller pass through the MintController object. In order for the command

prompt window to function it must be linked to a specific controller and given the compiler version and

symbol table information to allow compilation.

Assuming the application already has a MintController object that can be used to communicate with a

controller, the ID of this controller object must be passed to the command prompt window to create a link.

The ID of the MintController object can be obtained using the function getID

This value can then be used to link the MintCommandPrompt object to a MintController object using the

function. setMintControllerID.

The command prompt will also need a valid symbol table for the controller. The function

getSymbolTableForController will ensure that a compatible version of the symbol table exists on the

PC, if not it will upload one from the controller.

Following this the version of the compiler needs to be set. This is determined by the version of the MintMT

virtual machine that the firmware is using. The function getFirmwareMintVMBuild can be used to

interrogate the controller and get the version of MintMT virtual machine being used by the firmware. The

command prompt can then be set up using the function setCompiler.

The below example is written in Microsoft Visual C++ (m_controller is the name of the MintController object

in the project and m_command is the name of the MintCommandPrompt object in the project).

BSTR bstrID;

BSTR bstrSymbolTable;

// create handle to controller

m_controller.setNextMovePCI1Link ( 0, 0 );

// get ID of controller object

bstrID = m_controller.getID ();

// link the command prompt to the controller

m_command.setMintControllerID ( bstrID );

// get symbol table for controller

m_controller.getSymbolTableForController ( VARIANT_FALSE, &bstrSymbolTable );

// link the command prompt to the symbol table

m_command.setSymbolTable ( bstrSymbolTable );

// set the compiler version for the command prompt

m_command.setCompiler ( m_controller.getFirmwareVMBuild () );

// clear up

::SysFreeString ( bstrID );

::SysFreeString ( bstrSymbolTable );

The example below is written in Microsoft Visual Basic (MintController is the name of the MintController

object in the project and MintCommandPrompt is the name of the Command Prompt object in the project).

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Mint NextMove PCI Manual de usuario Pagina 28