Nicholas Orlowsky
821e80aaaf
- allow communication to elm327 device via a serialport - allow creation of elm327 device without requiring unwrap() - added some extra documentation - expose reset() functionality of device - serial_comm and ftdi_comm abstractions added
77 lines
2.1 KiB
Rust
77 lines
2.1 KiB
Rust
use std::fmt;
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/// DTC (diagnostic trouble code) metadata
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#[derive(Debug)]
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#[non_exhaustive]
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pub struct DtcsInfo {
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/// Whether the "check engine" light is illuminated
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pub malfunction_indicator_light: bool,
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/// Number of DTCs for this ECU
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pub dtc_count: u8,
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/// Bit field showing availability of seven common tests; the upper bit is currently unused.
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pub common_test_availability: u8,
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/// Whether the engine is Diesel
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pub is_compression_engine: bool,
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/// Bit field showing availability of sixteen engine-specific tests. What the tests are is
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/// based on the value of `is_compression_engine`.
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pub specific_test_availability: u16,
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}
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/// An individual trouble code from an ECU
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#[derive(Debug)]
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pub enum Dtc {
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/// Powertrain, represented with `'P'`
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Powertrain(u16),
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/// Chassis, represented with `'C'`
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Chassis(u16),
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/// Chassis, represented with `'B'`
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Body(u16),
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/// Network, represented with `'U'` likely due to previously being the "unknown" category
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Network(u16),
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}
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impl From<u16> for Dtc {
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fn from(val: u16) -> Self {
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let n = val & 0x3f;
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match val >> 14 {
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0 => Dtc::Powertrain(n),
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1 => Dtc::Chassis(n),
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2 => Dtc::Body(n),
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3 => Dtc::Network(n),
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_ => unreachable!(), // can't happen, only two bits
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}
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}
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}
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impl fmt::Display for Dtc {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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let (c, n) = match self {
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Self::Powertrain(n) => ('P', n),
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Self::Chassis(n) => ('C', n),
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Self::Body(n) => ('B', n),
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Self::Network(n) => ('U', n),
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};
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f.write_fmt(format_args!("{}{:03X}", c, n))
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}
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}
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/// Data retrieved when reading an oxygen sensor
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pub struct OxygenSensorData {
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/// The current voltage reading (V)
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pub voltage: f32,
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/// The current associated short term fuel trim (%)
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///
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/// The range of this value is approximately -1 to 1. This will be `127./128.` if not
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/// applicable for the sensor.
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pub shrft: f32,
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}
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pub(super) mod private {
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pub trait Sealed {}
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impl<T: crate::Obd2Device> Sealed for T {}
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}
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