Edge Gateway I/O Module GPIO MappingThe GPIOs on the external I/O Module for the Edge Gateway are behind PIC microcontroller. The PIC microcontroller is exposed tothe host system and to the host OS as a USB-HID device. Software applications developed to communicate with the GPIOs mayuse the protocol defined in the following set of references to communicate with the GPIO modules.Edge Gateway I/O Module PCIe expansion mappingThe PCIe slot on the external I/O module for the Edge Gateway are driven directly from the host PCIe bus. Since it is generic PCIeexpansion there are no PCIe device specific drivers integrated into the Windows 10 IoT Enterprise LTSB 2015 OS image. If there arespecific PCIe card used on this slot, contact the vendor of that PCIe card to verify if they have Windows 10 IoT Enterprise LTSB2015 drivers.Snappy Ubuntu Core 15 and 16OverviewUbuntu Snappy Core is a Linux OS distribution that is an entirely new mechanism for managing a system and its applications.The Edge Gateway supports the following list of Ubuntu Snappy Linux OS distribution:• Ubuntu Core 15• Ubuntu Core 16For more information on Ubuntu Snappy Core OS, see• www.ubuntu.com/cloud/snappy• www.ubuntu.com/desktop/snappy• www.ubuntu.com/internetofthingsPre-requisitesInfrastructureAn active connection to the internet is needed to update the Ubuntu Snappy Core operating system as well as applications (snaps)Prior knowledge• Familiarity with Unix\Linux commands• Knowledge of how to use the serial communication protocol• Knowledge of how to use a terminal emulator (for example; PuTTY)• Knowledge of your network settings (proxy URL, ports, name servers, and so on)Boot up and log inNOTE: The Ubuntu Snappy Core operating system has no graphical user interfaceTurn on the Edge Gateway and when prompted log in to the OS using the default credentials. The default username and passwordfor Ubuntu Snappy Core is ubuntu.NOTE: The username and password are both lowercaseFor example (Ubuntu 15);Ubuntu 15.04 localhost.localdomain tty1localhost login: ubuntuPassword:32