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Serial Port Driver MDD Functions (Windows CE 5.0)

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The following table shows the serial port driver's model device driver (MDD) functions.

Programming element Description
COM_Close This function closes the serial device. It is called after an application calls the CloseHandle function.
COM_Deinit This function de-initializes the serial port.
COM_Init This function initializes the serial port.
COM_IOControl This function implements the I/O control routine for the serial port.
COM_Open This function initializes the serial port driver.
COM_PowerDown This function informs the serial port driver that the hardware platform is about to enter suspend mode.
COM_PowerUp This function informs the serial port driver that the hardware platform is resuming from suspend mode.
COM_Read This function enables an application to receive characters from the serial port.
COM_Write This function enables an application to transmit bytes to the serial port.

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