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##

# 1.1.9.4.4 DRV_USART_Close Function

## C

    void DRV_USART_Close( DRV_Handle handle )

## Summary

Closes an opened-instance of the USART driver.

## Description

This routine closes an opened-instance of the USART driver, invalidating the handle. Any buffers in the driver queue that were submitted by this client will be removed. A new handle must be obtained by calling DRV_USART_Open before the caller may use the driver again.

## Precondition

DRV_USART_Open must have been called to obtain a valid opened device handle.

## Parameters

Param | Description
--- | ---
handle | A valid open-instance handle, returned from the driver's open routine

## Returns

None.

## Example

    // 'handle', returned from the DRV_USART_Open

    DRV_USART_Close(handle);

## Remarks

None.