Magtek MAGTEK User Manual download pdf (Page 66)

MagTek Communications Protocol, Driver Reference Manual

McpReset

This function is used to reset the channel and reestablish communications with an MCP device.

The result of reset is the same as closing and reopening the channel except the device handle

remains the same.

DWORD McpReset( HANDLE hDevice );

Parameters

hDevice

Handle to the specified device (communications resource) that is to be reset. This handle was

returned from the McpOpen function.

Return Value

The returned value indicates the outcome of the reset function.

Value Meaning

MCP_ST_OK Success. The channel has been reset.

MCP_ST_INVALID Invalid device handle hDevice

MCP_ST_FAILED Other error

Remarks

After opening a device, the host application can re-establish, or reset the channel by calling

McpReset. This function cancels any outstanding commands and restores the communication

channel to its initial state. Using this function is more desirable than closing and reopening the

channel.

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Magtek MAGTEK User Manual Page 66