CP2114 datasheet(13/54 Pages) SILABS

13 / 54 page

AN433

Rev. 0.5

2.15. HidUart_FlushBuffers

Description:

This function flushes the receive buffer in the device and the HID driver and/or the transmit buffer

in the device.

Prototype:

HID_UART_STATUS

HidUart_FlushBuffers

(HID_UART_DEVICE

device,

BOOL

flushTransmit, BOOL flushReceive)

Parameters:1.

device—Device object pointer as returned by HidUart_Open().

flushTransmit —Set to TRUE to flush the device transmit buffer.

flushReceive —Set to TRUE to flush the device receive buffer and HID receive buffer.

Return Value: HID_UART_STATUS

HID_UART_SUCCESS

HID_UART_INVALID_DEVICE_OBJECT

HID_UART_DEVICE_IO_FAILED

2.16. HidUart_Cancello

Description:

This function cancels any pending HID reads and writes. (Windows only)

Prototype:

HID_UART_STATUS HidUart_CancelIo (HID_UART_DEVICE device)

Parameters:

device—Device object pointer as returned by HidUart_Open().

Return Value: HID_UART_STATUS

HID_UART_SUCCESS

HID_UART_INVALID_DEVICE_OBJECT

HID_UART_DEVICE_IO_FAILED

2.17. HidUart_SetTimeouts

Description:

Sets the read and write timeouts. Timeouts are used for HidUart_Read() and HidUart_Write(). The

default value for timeouts is 1000 ms, but timeouts can be set to wait for any number of

milliseconds between 0 and 0xFFFFFFFF.

Prototype:

HID_UART_STATUS

HidUart_SetTimeouts

(HID_UART_DEVICE

device,

DWORD

readTimeout, DWORD writeTimeout)

Parameters:1.

device—Device object pointer as returned by HidUart_Open().

readTimeout—HidUart_Read() operation timeout in milliseconds.

writeTimeout—HidUart_Write() operation timeout in milliseconds.

Return Value: HID_UART_STATUS

HID_UART_SUCCESS

HID_UART_INVALID_DEVICE_OBJECT

Remarks:

If read timeouts are set to a large value and no data is received, then the application may appear

unresponsive. It is recommended to set timeouts appropriately before using the device.

CP2114 Datasheet(PDF) 13 Page - Silicon Laboratories

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