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pub use self::{
air_baudrate::AirBaudRate,
baudrate::BaudRate,
option::{
fec_mode::ForwardErrorCorrectionMode, io_drive_mode::IoDriveMode,
transmission_power::TransmissionPower, wakeup_time::WakeupTime, TransmissionMode,
},
uart_parity::Parity,
};
pub use error::Error;
pub use typed_builder::TypedBuilder;
#[cfg(feature = "value_enum")]
use clap::ValueEnum;
mod air_baudrate;
mod baudrate;
mod error;
mod option;
mod uart_parity;
#[cfg(test)]
mod read;
#[cfg(test)]
mod write;
#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
#[cfg_attr(test, derive(proptest_derive::Arbitrary))]
#[cfg_attr(feature = "value_enum", derive(ValueEnum))]
pub enum Persistence {
#[default]
Temporary,
Permanent,
}
#[mutants::skip]
impl From<Persistence> for u8 {
fn from(mode: Persistence) -> Self {
match mode {
Persistence::Temporary => 0xC2,
Persistence::Permanent => 0xC0,
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, TypedBuilder)]
#[cfg_attr(test, derive(proptest_derive::Arbitrary))]
pub struct Parameters {
pub address: u16,
pub channel: u8,
#[builder(default)]
pub uart_parity: Parity,
#[builder(default)]
pub uart_rate: BaudRate,
#[builder(default)]
pub air_rate: AirBaudRate,
#[builder(default)]
pub transmission_mode: TransmissionMode,
#[builder(default)]
pub io_drive_mode: IoDriveMode,
#[builder(default)]
pub wakeup_time: WakeupTime,
#[builder(default)]
pub fec: ForwardErrorCorrectionMode,
#[builder(default)]
pub transmission_power: TransmissionPower,
}
impl Parameters {
pub fn to_bytes(&self) -> [u8; 5] {
let mut bytes = [0u8; 5];
bytes[0] = ((0xFF00 & self.address) >> 8) as u8;
bytes[1] = (0x00FF & self.address) as u8;
let parity = u8::from(self.uart_parity);
let uart_rate = u8::from(self.uart_rate);
let air_rate = u8::from(self.air_rate);
let speed_byte = (parity << 6) | (uart_rate << 3) | air_rate;
bytes[2] = speed_byte;
bytes[3] = self.channel;
let transmission_mode = u8::from(self.transmission_mode);
let io_drive_mode = u8::from(self.io_drive_mode);
let wakeup_time = u8::from(self.wakeup_time);
let fec = u8::from(self.fec);
let transmission_power = u8::from(self.transmission_power);
let options = (transmission_mode << 7)
| (io_drive_mode << 6)
| (wakeup_time << 3)
| (fec << 2)
| transmission_power;
bytes[4] = options;
bytes
}
pub fn from_bytes(bytes: &[u8; 5]) -> Result<Self, Error> {
let address_high = bytes[0];
let address_low = bytes[1];
let speed = bytes[2];
let channel = bytes[3];
let options = bytes[4];
let address = (address_high as u16) << 8 | address_low as u16;
let uart_parity = Parity::try_from((speed & 0xC0) >> 6)?;
let uart_rate = BaudRate::try_from((speed & 0x38) >> 3)?;
let air_rate = AirBaudRate::try_from(speed & 0x7)?;
let transmission_mode = TransmissionMode::try_from((options & 0x80) >> 7)?;
let io_drive_mode = IoDriveMode::try_from((options & 0x40) >> 6)?;
let wakeup_time = WakeupTime::try_from((options & 0x38) >> 3)?;
let fec = ForwardErrorCorrectionMode::try_from((options & 0x07) >> 2)?;
let transmission_power = TransmissionPower::try_from(options & 0x3)?;
Ok(Self {
address,
channel,
uart_parity,
uart_rate,
air_rate,
transmission_mode,
io_drive_mode,
wakeup_time,
fec,
transmission_power,
})
}
}
#[cfg(test)]
mod test {
use super::*;
use proptest::prelude::*;
proptest! {
#![proptest_config(ProptestConfig {
cases: 10000,
.. ProptestConfig::default()
})]
#[test]
fn from_to_bytes_roundtrip(params in any::<Parameters>()) {
let bytes = params.to_bytes();
let decoded = Parameters::from_bytes(&bytes).unwrap();
assert_eq!(decoded, params);
}
}
}
#[cfg(all(feature = "value_enum", test))]
mod value_enum_test {
#[test]
fn value_enum_persistence() {
let persistence = <crate::Persistence as clap::ValueEnum>::value_variants();
assert_eq!(
persistence,
[crate::Persistence::Temporary, crate::Persistence::Permanent]
);
}
}