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
46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
use super::serial_comm::{SerialComm, DEFAULT_BAUD_RATE};
|
|
use super::Result;
|
|
use std::io::{Read, Write};
|
|
use std::time::Duration;
|
|
|
|
/// Communicate with a serial device using the
|
|
/// serialport library
|
|
///
|
|
/// /dev/tty* or similar on unix-like systems
|
|
/// COM devices on Windows systems
|
|
pub struct SerialPort {
|
|
device: Box<dyn serialport::SerialPort>,
|
|
}
|
|
|
|
impl SerialPort {
|
|
/// Creates a new instance of a SerialPort
|
|
pub fn new(path: &str) -> Result<Self> {
|
|
let device = serialport::new(path, DEFAULT_BAUD_RATE)
|
|
.timeout(Duration::from_millis(10))
|
|
.parity(serialport::Parity::None)
|
|
.data_bits(serialport::DataBits::Eight)
|
|
.stop_bits(serialport::StopBits::One)
|
|
.path(path)
|
|
.open()?;
|
|
|
|
Ok(Self { device })
|
|
}
|
|
}
|
|
|
|
impl SerialComm for SerialPort {
|
|
fn write_all(&mut self, data: &[u8]) -> Result<()> {
|
|
Ok(self.device.write_all(data)?)
|
|
}
|
|
|
|
fn read(&mut self, data: &mut [u8]) -> Result<usize> {
|
|
Ok(self.device.read(data)?)
|
|
}
|
|
|
|
fn set_baud_rate(&mut self, baud_rate: u32) -> Result<()> {
|
|
Ok(self.device.set_baud_rate(baud_rate)?)
|
|
}
|
|
|
|
fn purge_buffers(&mut self) -> Result<()> {
|
|
Ok(self.device.clear(serialport::ClearBuffer::All)?)
|
|
}
|
|
}
|