kdaemerald.blogg.se

(Think of CBOR as a compact, binary form of JSON)

The Simple Management Protocol uses CBOR to encode the Bluetooth LE messages. The protocol supports a rich set of commands for updating PineTime firmware, accessing the PineTime Flash filesystem, debug logs, runtime statistics. Our PineTime Smart Watch firmware exposes the Simple Management Protocol over Bluetooth LE. We use Uint8Buffer from the typed_data Dart Library to represent byte buffers (like Bluetooth messages). Go has specific numeric types like uint8 (unsigned 8-bit integer), but Dart only has a single integer type: int. Now we'll map Go Types to Dart Types, which is needed for converting Go Structs and Functions. First let's learn how Go types are converted to Dart. We'll see convertStruct() and convertFunction() in a while. What kind of subtree is this?ĬonvertStruct() to convert a Go Struct (parsed as GenDecl)ĬonvertFunction() to convert a Go Function (parsed as FuncDecl) Next we inspect the type of the Declaration in decl. "Decls" contains all Go Struct and Function Declarations in "node" Hence we convert Go Structs and Functions by iterating over all Decls like so. Generic Declaration ( GenDecl): Declaration for a Go Structįunction Declaration ( FuncDecl): Declaration for a Go Functionĭeclarations are parked under the Decls property of our node. The ast library parses both as Declarations. Read on to learn how this Go code: nmxact/nmp/image.go // Convert From Go.įunc NewImageUploadReq() *ImageUploadReq The conversion may not be perfect, but it will be very helpful for building the PineTime Companion App! Today we shall experiment with converting Go code to Dart automatically. But Flutter runs on another language: Dart! There's a problem: The code to do all this is available in Go. We're now building with Flutter the open source Android and iOS Companion App for PineTime Smart Watch: For updating firmware, syncing date/time, pushing mobile notifications, controlling our smart home gadgets. Work-in-progress PineTime Companion App on iPhone, converted from Go to Flutter and Dart