66 lines
1.8 KiB
Plaintext
66 lines
1.8 KiB
Plaintext
Overview
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========
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This example works as two USB CDC ACM devices. It will appear as two USB serial devices 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 serial device will appear on PC.
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7. Open two serial terminal with the following settings for two new USB serial devices.
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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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Running the demo
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================
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When the demo is running, the serial port of the Debug Link will output:
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Start USBX device composite example...
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Then, connect a USB cable between PC and the USB device port of the board.
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Two USB serial devices will appear in the Device Manager of Windows.
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And the serial port will output:
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CDC ACM1 device activate
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CDC ACM2 device activate
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ACM1 device serial terminal, press any key, and it will display a string, for example:
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fabcdef
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gabcdef
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3abcdef
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ACM2 device serial terminal, press any key, and it will display a string, for example:
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f123456
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g123456
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3123456
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