1. Set the hardware jumpers (Tower system/base module) to default settings.
Prepare the Demo
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1. Connect the first micro USB cable between the PC host and the debug USB port on the board.
2. Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
3. Download the program to the target board.
4. Connect the second micro USB cable between the PC host and the USB port on the board.
5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Note
1. When connected to MacBook, change the PCM format from (0x02,0x00, ) to (0x01,0x00, ) in
g_config_descriptor[CONFIG_DESC_SIZE] in the usb_descriptor.c. Otherwise, it can't be enumerated and
noise is present when recording with the QuickTime player because the sampling frequency and bit resolution
do not match.
2. When device functionality is changed, please uninstall the previous PC driver to make sure the device with changed functionality can run normally.
3. If you're having audio problems on Windows 10 for recorder, please disable signal enhancement as the following if it is enabled and have a try again.
Running the demo
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When the example runs successfully, you should see similar output on the serial terminal as below: