Frequently Asked Questions

Can I do X with Harald

A BLE scan is the only high level function implemented so far. Though sending and receiving all Bluetooth Commands and Events is within the scope of Harald, the spec is vast and it will take some time to implement. As such, it will be common to find oneself in a position where you want to do something that isn't implemented yet.

Harald has not implemented X yet, how do I do X

At the end of the day Bluetooth boils down to sending commands and receiving events. Those are defined within the Bluetooth Core Specification. Find out what commands and events you require, then leverage the plumbing of Harald to send and receive binaries you are responsible for creating and parsing. Ideally a PR is then opened!

What if I get stuck

Create an issue or head over to #nervesbluetooth in the Elixir Slack workspace. Researching what you are trying to do deeper than "send data" or "connect to something", along with putting together a list of required commands and events, and then asking for help, will go a long way towards creating a situation maintainers can be productive with.