As a developer, you are likely very comfortable in that environment and have the tools you need installed and configured to your liking. For features that are not dependent on the target hardware, it makes sense to do as much development as possible on your PC system. Many of the libraries, networking protocols, and languages needed for developing IoT applications are available on your PC Linux installation provided by your distribution. Note that the actual weather sensing devices and actuators will be stub implementations so that readers can replicate this without needing custom hardware but it should be reasonably straightforward to link in physical devices if they are available.
The devices in our fleet will communicate with each other to implement the desired IoT application. Our actuator systems will read the weather data and affect changes in their environment, such as darkening windows, based on the weather readings. Our sensor systems will act as remote devices that return weather data to a central location.
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We will customize our application code to produce two classes of systems common in IoT designs sensors and actuators. We will be developing a weather station application which are extremely common in the maker community. The goal is to familiarize readers with the general workflow and to create something to be used as a jumping off point for future development. The application we will develop here is similar in scope to many existing IoT designs, albeit extremely simplified. Note that the focus of this discussion is applications that are suitable for a 32- or 64- bit system running Linux and will not discuss smaller systems more suitable for an RTOS. Using readily available OS images will allow developers to bring up new platforms and quickly focus on IoT features while deferring hardware specifics to later in the development cycle.
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This post will detail some quick methods for prototyping IoT applications without needing to understand traditional embedded systems details such as bootloaders, device drivers and OS kernels. Developers without traditional embedded systems backgrounds are being asked to build applications to meet consumer demand and many of these developers are looking for quick ways to get started. The recent emergence of the Internet of Things (IoT) and associated applications into the mainstream means more developers will be required to develop these systems in the coming years.
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