Grizzly.ZWave.QRCode (grizzly v0.22.3) View Source

Z-Wave QR code This module handles Z-Wave QR codes that follow Silicon Labs Software Design Specification SDS13937 and SDS13944.

Link to this section Summary

Types

t()

Device information

QR Code version (S2-only or Smart Start-enabled)

Functions

Encode device information into Z-Wave QR Code format The output of this is either a 90 byte or 136 byte string that should be put into a QR Code. Z-Wave specifies that the 90-byte code (no UUID16) is made into a 29x29 pixel QR Code. The 136-byte* code (w/ UUID16) should be put into a 33x33 pixel QR Code. QR Codes should be encoded as type "text" with error correction "L". NOTE: SDS13937 has a mistake with the code length. It says 134 bytes, but the UUID16 encode has 2 extra bytes for presentation, so it should be 136.

Link to this section Types

Specs

t() :: %Grizzly.ZWave.QRCode{
  application_version: 0..65535,
  dsk: Grizzly.ZWave.DSK.t(),
  manufacturer_id: 0..65535,
  product_id: 0..65535,
  product_type: 0..65535,
  requested_keys: [Grizzly.ZWave.Security.key()],
  uuid16: nil | Grizzly.ZWave.SmartStart.MetaExtension.UUID16.t(),
  version: version(),
  zwave_device_type: {atom(), atom()} | 0..65535,
  zwave_installer_icon:
    Grizzly.ZWave.IconType.name() | Grizzly.ZWave.IconType.value()
}

Device information

  • :zwave_device_type - either {generic_device_type, specific_device_type} or a number

Specs

version() :: :s2 | :smart_start

QR Code version (S2-only or Smart Start-enabled)

Link to this section Functions

Specs

encode!(t()) :: iolist()

Encode device information into Z-Wave QR Code format The output of this is either a 90 byte or 136 byte string that should be put into a QR Code. Z-Wave specifies that the 90-byte code (no UUID16) is made into a 29x29 pixel QR Code. The 136-byte* code (w/ UUID16) should be put into a 33x33 pixel QR Code. QR Codes should be encoded as type "text" with error correction "L". NOTE: SDS13937 has a mistake with the code length. It says 134 bytes, but the UUID16 encode has 2 extra bytes for presentation, so it should be 136.