iOS Sensor Apps with Arduino

MaxSonar Range Finder for iPhone

At least in the first instance, we’re going to make use of the sensor in analog mode, and connect it to our Arduino board, which in turn will be connected to our iPhone via the Redpark cable.

Open Xcode, choose to create a new project, select a View-based application for the iPhone device family, and when prompted name it “MaxSonar” and save it to the Desktop.

Adding the Serial Library

Open your copy of the Redpark Serial SDK and grab the redparkSerial.h and rscMgr.h header files from the inc/ folder, and the libRscMgrUniv.a static libraries from lib/. Drag and drop them into your new MaxSonar project, remembering to tick the “Copy items into destination group’s folder (if needed)” checkbox when prompted.

We also need to add the External Accessories framework, so click on the project icon at the top of the Project pane in Xcode, and click on the MaxSonar Target and then on the Build Phases tab. Finally, click on the Link Binary with Libraries item to open up the list of linked frameworks, and click on the + symbol to add a new framework. Select the External Accessory framework from the drop-down list and click the Add button.

Finally, we need to declare support for the cable. Click on the SerialConsole-Info.plist file to open it in the editor. Right-click on the bottommost row of the list and select Add Row from the menu. An extra row will be added to the table, and you’ll be presented with a drop-down menu. Type UISupportedExternalAccessoryProtocols ...