pub fn decode_qr_payload(qr: &str) -> Result<OnboardingInfo>Expand description
Decode a Matter QR code payload (the MT:... string, with or without the MT: prefix).
The payload is a Base38-encoded 88-bit integer with the following layout (LSB first):
- bits 0- 2 : version (3 bits)
- bits 3-18 : vendor ID (16 bits)
- bits 19-34 : product ID (16 bits)
- bits 35-36 : commissioning flow (2 bits)
- bits 37-44 : discovery capabilities (8 bits)
- bits 45-56 : discriminator (12 bits)
- bits 57-83 : passcode (27 bits)
- bits 84-87 : padding (4 bits, must be zero)