Yilin Sun
6e8d03ec0a
Signed-off-by: Yilin Sun <imi415@imi.moe> |
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.. | ||
armgcc | ||
board.c | ||
board.h | ||
board_setup.c | ||
board_setup.h | ||
clock_config.c | ||
clock_config.h | ||
fx_user.h | ||
nx_user.h | ||
pin_mux.c | ||
pin_mux.h | ||
readme.md | ||
tx_user.h | ||
usb_device_config.h | ||
usbx_device_audio_loopback.c | ||
usbx_device_audio_loopback_v3_14.xml | ||
ux_device_descriptor.c | ||
ux_device_descriptor.h | ||
ux_user.h |
readme.md
Overview
This example works as a USB audio device. It will appear as USB speaker and USB microphone device on PC.
SDK version
- Version: 2.15.000
Toolchain supported
- IAR embedded Workbench 9.40.1
- Keil MDK 5.38.1
- GCC ARM Embedded 12.2
- MCUXpresso 11.8.0
Hardware requirements
- Two Micro USB cables
- Target Board
- Personal Computer(PC)
Board settings
This example can work with the USB high speed port (P9) or the USB full speed port (P10).
Prepare the Demo
- Connect a USB Micro cable between the host PC and the Debug Link USB port (P6) on the target board.
- High speed: Connect a USB Micro cable between the host PC and the on-board USB high speed port (P9). Full speed: Connect a USB Micro cable between the host PC and the on-board USB full speed port (P10).
- Open a serial terminal on PC with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- 1 stop bit
- No flow control
- Compile the demo:
- High speed: Set USB_DEVICE_CONFIG_LPCIP3511FS to 0 and USB_DEVICE_CONFIG_LPCIP3511HS to 1 in usb_device_config.h
- Full speed: Set USB_DEVICE_CONFIG_LPCIP3511FS to 1 and USB_DEVICE_CONFIG_LPCIP3511HS to 0 in usb_device_config.h
- Download the program to the target board.
- Press the on-board RESET button to start the demo. A new USB Speaker and USB Microphone device will appear on PC. Running the demo ================ After writing the program to the flash of the target board, press the reset button on your board to start the demo. The serial port will output:
USBX device audio loopback example...
Then, connect a USB cable between PC and the USB device port of the board. A USB speaker and microphone will appear in the Device Manager of Windows. The audio will output from the speaker and loop back to the microphone.
The serial port will output:
Audio device activate