USB CDC is a device class which implements a ‘serial over USB’ protocol. This article describes how to use the Raspberry Pi with devices connected to it using USB CDC. In a standard configuration with a USB WiFi and a USB HID (mouse plus keyboard) dongle I still can attach two Freescale (ahem, NXP) Freedom boards to the Raspberry Pi:įRDM-K22F and FRDM-K64F attached to Raspberry Pi 2 Outline USB has the advantage that it powers the board, plus I can attach multiple devices: up to four on the Raspberry Pi 2 and even more with using a USB hub.
One way is to use USB CDC (Serial over USB) as communication channel. For my home automation project with openHAB I want to attach Freescale (now NXP) FRDM ( Freedom) boards so they can take care about the realtime aspects and to act as gateways to my other systems.
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