MCP2200T-ISLASHSS datasheet(18/44 Pages) MICROCHIP

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MCP2200

DS20002228C-page 18

 2011-2015 Microchip Technology Inc.

EXAMPLE 2-13:

2.3.1.14

GetSelectedDeviceInfo

Function:

String^ SimpleIOClass::GetSelectedDeviceInfo(void)

EXAMPLE 2-14:

2.3.1.15

InitMCP2200

Function:

void SimpleIOClass::InitMCP2200 (unsigned int VendorID, unsigned int ProductID)

EXAMPLE 2-15:

2.3.1.16

IsConnected

Function:

bool SimpleIOClass::IsConnected()

Summary:

Returns the selected device path name.

Description:

The function returns a string containing the unique path name of the selected device.

Precondition:

At least one call to the InitMCP2200() is required in order to initiate a DLL search for the compatible

devices. VID and PID must be previously set via a call to InitMCP2200(VID, PID).

Parameters:

None.

Returns:

This function returns a string containing the unique path name of the selected device.

Remarks:

The default selected device is the first one that the DLL finds. If the user wants to retrieve other

devices path names (assuming more than one device is present in the system), a call to

SimpleIOClass::SelectDevice(deviceNo)

is required.

Summary:

Configures the Simple IO class for a specific Vendor and product ID.

Description:

Sets the Vendor and Product ID used for the project.

Precondition:

None.

Parameters:

Vendor ID

- assigned by USB IF (www.usb.org)

Product ID

- assigned by the Vendor ID Holder

Returns:

None.

Remarks:

Call this function before any other calls, to set the Vendor and Product IDs.

Summary:

Checks with the OS if the current VID/PID device is connected.

Description:

Checks if a MCP2200 device is connected to the computer. If so, it returns True, otherwise the result

will be False.

Precondition:

VID and PID must be previously set via a call to InitMCP2200(VID, PID).

Parameters:

None.

Returns:

True - if at least one device is connected to the host.

False - if there are no devices connected to the host.

Remarks:

No actual communication with the end device is occurring. The function inquires the OS if the

specified VID/PID was enumerated.

lblStatusBar->Text = SimpleIOClass::GetSelectedDevice();

lblStatusBar->Text = SimpleIOClass::GetSelectedDeviceInfo(void)

InitMCP2200 (0x4D8, 0x00DF);

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