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
42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
use super::serial_comm::{SerialComm, DEFAULT_BAUD_RATE};
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use super::Result;
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use std::io::{Read, Write};
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/// Communicate with a USB to Serial FTDI device
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/// with the FTDI library
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pub struct FTDIDevice {
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device: ftdi::Device,
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}
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impl FTDIDevice {
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/// Creates a new instance of an FTDIDevice
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pub fn new() -> Result<Self> {
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let mut device = ftdi::find_by_vid_pid(0x0404, 0x6001)
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.interface(ftdi::Interface::A)
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.open()?;
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device.set_baud_rate(DEFAULT_BAUD_RATE)?;
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device.configure(ftdi::Bits::Eight, ftdi::StopBits::One, ftdi::Parity::None)?;
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device.usb_reset()?;
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Ok(Self { device })
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}
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}
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impl SerialComm for FTDIDevice {
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fn write_all(&mut self, data: &[u8]) -> Result<()> {
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Ok(self.device.write_all(data)?)
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}
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fn read(&mut self, data: &mut [u8]) -> Result<usize> {
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Ok(self.device.read(data)?)
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}
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fn set_baud_rate(&mut self, baud_rate: u32) -> Result<()> {
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Ok(self.device.set_baud_rate(baud_rate)?)
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}
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fn purge_buffers(&mut self) -> Result<()> {
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Ok(self.device.usb_purge_buffers()?)
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}
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}
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