52 lines
1.5 KiB
Plaintext
52 lines
1.5 KiB
Plaintext
Overview
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========
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This example works as a USB audio device. It will appear as USB speaker and USB microphone device on PC.
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Toolchain supported
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===================
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- IAR embedded Workbench 9.20.2
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- Keil MDK 5.36
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- GCC ARM Embedded 10.3.1
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- MCUXpresso 11.5.0
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Hardware requirements
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=====================
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- Two Micro USB cables
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- Target Board
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- Personal Computer(PC)
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Board settings
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==============
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This example only work with the USB high speed port (P9).
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Prepare the Demo
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================
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1. Connect a USB Micro cable between the host PC and the Debug Link USB port (P6) on the target board.
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2. Connect a USB Micro cable between the host PC and the on-board USB high speed port (P9).
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3. Open a serial terminal on PC with the following settings:
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- 115200 baud rate
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- 8 data bits
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- No parity
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- 1 stop bit
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- No flow control
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4. Compile the demo.
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5. Download the program to the target board.
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6. Press the on-board RESET button to start the demo. A new USB Speaker and USB Microphone device will appear on PC.
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Running the demo
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================
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After writing the program to the flash of the target board,
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press the reset button on your board to start the demo.
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The serial port will output:
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USBX device audio loopback example...
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Then, connect a USB cable between PC and the USB device port
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of the board. A USB speaker and microphone will appear in the
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Device Manager of Windows. The audio will output from the speaker
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and loop back to the microphone.
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The serial port will output:
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Audio device activate
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