| LPCOpen Platform v1.03 LPCOpen Platform for NXP LPC Microcontrollers

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Audio input device example
USB examples

## Detailed Description

Example description
This example implements an audio interface class device mode device that enumerates as audio device (USB microphone) and sends samples to the host when a button is pressed. To run the example follow the steps below

1. Make sure USB cable is connected between the board and host PC
2. In host PC Press (Windows Key+R) to bring up the "Run" dialog
3. Enter mmsys.cpl in the edit box and press enter
4. Dialog box named Sound opens now, click on Recording tab
5. Among the list of audio devices shown look for Microphone with description LPCUSBLib Audio input Demo
6. Double click the microphone entry mentioned above
7. Microphone Properties dialog will show up, in that click on Listen tab
8. Check the Listen to this device check box then click on Apply button
9. Press the button on the board to get the audio played on host PC

   > If the entry mentioned in step 5 is not found, then from "Run" execute command "devmgmt.msc" from the list of hardware look for the COM port driver with an exclamatory mark in it. Right click and uninstall the driver, click Action menu and select Scan for hardware changes. Now under "Sound Vidio and Game controllers", a device named *"LPCUSBlib Audio Input Demo"* must be shown.

Special connection requirements
There are no special connection requirements for this example.

Build procedures:
LPC18xx/43xx example quickstart for Keil uVision4
LPC18xx/43xx example quickstart for IAR EWARM
LPC18xx/43xx example quickstart for Code Red Xpresso

Supported boards and board setup:
Hitex 1850 evaluation boards
Hitex 4350 evaluation boards
Keil 1857 evaluation boards
Keil 4357 evaluation boards
NGX 1830 Xplorer boards
NGX 4330 Xplorer boards

Submitting LPCOpen issues:
Community support for LPCOpen

## Modules
| Class descriptors
| Main definitions
| ROM stack support