Overview
========
This example works as two USB CDC ACM devices. It will appear as two USB serial devices on PC.
Toolchain supported
===================
- IAR embedded Workbench 9.30.1
- Keil MDK 5.37
- GCC ARM Embedded 10.3.1
- MCUXpresso 11.6.0
Hardware requirements
=====================
- Mini/micro USB cable
- EVK-MIMXRT1020 board
- Personal Computer(PC)
Board settings
==============
No special settings are required.
Prepare the Demo
================
1. Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
2. Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- 1 stop bit
- No flow control
3. Compile the demo with the configuration, "flexspi_nor_debug".
4. Write the program to the flash of the target board.
5. Press the reset button on your board to start the demo.
6. Connect a USB cable between the PC and the USB device port of the board.
7. PC can detect two USB ACM devices.
Running the demo
================
When the demo is running, the serial port of the Debug Link will output:
Start USBX device composite example...
Then, connect a USB cable between PC and the USB device port of the board.
Two USB serial devices will appear in the Device Manager of Windows.
And the serial port will output:
CDC ACM1 device activate
CDC ACM2 device activate
ACM1 device serial terminal, press any key, and it will display a string, for example:
fabcdef
gabcdef
3abcdef
ACM2 device serial terminal, press any key, and it will display a string, for example:
f123456
g123456
3123456
imi415
d983b267f0
