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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Data types shared between V0 and V1 advertisements
/// Power in dBm, calibrated as per
/// [Eddystone](https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power)
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct TxPower {
/// Power in `[-100, 20]`
power: i8,
}
impl TxPower {
/// Power in `[-100, 20]`
pub fn as_i8(&self) -> i8 {
self.power
}
}
impl TryFrom<i8> for TxPower {
type Error = TxPowerOutOfRange;
fn try_from(value: i8) -> Result<Self, Self::Error> {
if !(-100..=20).contains(&value) {
Err(TxPowerOutOfRange)
} else {
Ok(TxPower { power: value })
}
}
}
/// Tx power was out of the valid range `[-100, 20]`.
#[derive(Debug)]
pub struct TxPowerOutOfRange;
/// MDP's context sync number, used to inform other devices that they have stale context.
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub struct ContextSyncSeqNum {
/// 4-bit sequence
num: u8,
}
impl ContextSyncSeqNum {
/// Returns the context seq num as a u8
pub fn as_u8(&self) -> u8 {
self.num
}
}
impl TryFrom<u8> for ContextSyncSeqNum {
type Error = ContextSyncSeqNumOutOfRange;
fn try_from(value: u8) -> Result<Self, Self::Error> {
// must only have low nibble
if value > 0x0F {
Err(ContextSyncSeqNumOutOfRange)
} else {
Ok(ContextSyncSeqNum { num: value })
}
}
}
/// Seq num must be in `[0-15]`.
#[derive(Debug)]
pub struct ContextSyncSeqNumOutOfRange;
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