Oct 21, 2018 To begin with installation process of CDC Serial Driver, download and extract Android CDC Serial Driver on your Windows PC. Next, open the Device manager on your Computer by pressing Win+ R to launch Run Command in Run Command Window Type.
Communication Device Class - Abstract Control Model (CDC-ACM)This USB class is usually used for serial port emulation and as a modem interface.The class is also often used in combination with older software which previously used RS-232 to communicate with an external device.
Accessing CDC on Linux
On Linux no drivers are needed, the device should show up as/dev/ttyACM0 or similar. 'sudo screen /dev/ttyACM0 115200'can be used to access the device.
Accessing CDC on Windows
On Windows 8.1 and below the 'usbser' driver is not automaticallyassigned to the CDC-ACM device. An .inf file for the CDC-ACM device must be installed on these older systems. The device can be accessed via COM portemulation programs e.g. PuTTY.
Accessing CDC on macOS
On macOS no drivers are needed, the device should show up as/dev/tty.usbmodem13245678 or similar. The 'screen' terminalprogram can be used to access the device.
Windows 10 comes with a re-designed driver for CDC-ACM. At the time of writing (June 2019) Windows 10 has an issue with large IN CDC transfers. Sometimes packets seems to disappear inside the Windows 10 USB stack.
The only workaround is to read in small chunks. Or to add a delay to the transfers.We have analysed this using a hardware USB analyser and a test program whichreads data from the device. The device (USB high-speed) sends out data continuously in 512 bytes packets. Each packet has a unique, consecutive ID.The test application checks that the received packet always has the ID of the previous packet + 1. After a couple dozen packet the error usually appears and a packet ends up missing.When comparing the packets which are seen 'on the wire' using the USB analyser with the packets which the Windows 10 program received it can be seen that sometimes packets are missing even though they were clearly successfully received by Windows 10. E.g. on the analyser one can see packets 30, 31, 32, 33 and on Windows 10 one can see 30, 31, 33. It would appear that the method through which data is read from the COM port (Windows API ReadFile, ReadFile overlapped or ReadFileEx) has no effect on the missing packets.
When using the same program on Windows 7 no issues can be seen.
Retrieved from 'https://wiki.segger.com/index.php?title=CDC&oldid=5453'
Download the Arduino EnvironmentYou can direct download the latest version from this page:, When the download finishes, unzip the downloaded file. Make sure to preserve the folder structure. Double-click the folder to open it. There should be a few files and sub-folders inside.Connect Seeeduino to PCConnect the Seeeduino board to your computer using the USB cable.
The green power LED (labeled PWR) should go on.Install the driver Installing drivers for the Seeeduino with window7. Plug in your board and wait for Windows to begin its driver installation process. After a few moments, the process will fail. Open the Device Manager by right clicking “My computer” and selecting control panel.
Look under Ports (COM & LPT). You should see an open port named 'USB Serial Port' Right click on the 'USB Serial Port' and choose the 'Update Driver Software' option. Next, choose the 'Browse my computer for Driver software' option. Finally, select the driver file named 'FTDI USB Drivers', located in the 'Drivers' folder of the Arduino Software download.Note: the FTDI USB Drivers are from Arduino. But when you install drivers for other Controllers, such as Xadow Main Board, Seeeduino Clio, Seeeduino Lite,you need to download corresponding driver file and save it. And select the driver file you have downloaded.
The below dialog boxes automatically appears if you have installed driver successfully. You can check that the drivers have been installed by opening the Windows Device Manager.
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
January 2023
Categories |