api modifications

Cargo.toml

@@ -11,3 +11,5 @@ env_logger = "0.10"
 ftdi = "0.1.3"
 log = "0.4.8"
 thiserror = "1.0.15"
+serialport="=4.6.1"
+anyhow = "1.0.97"

src/commands/mod.rs

@@ -220,4 +220,6 @@ func! {
 
     /// Get service 1 PID support for $21 to $40
     fn get_service_1_pid_support_2(0x01, 0x20) -> u32;
+    
+    fn get_fuel_level(0x01, 0x2F) -> u8;
 }

src/device/elm327.rs

@@ -22,12 +22,6 @@ pub struct Elm327 {
     baud_rate: u32,
 }
 
-impl Default for Elm327 {
-    fn default() -> Self {
-        Elm327::new().unwrap()
-    }
-}
-
 impl Obd2BaseDevice for Elm327 {
     fn reset(&mut self) -> Result<()> {
         self.flush_buffers()?;
@@ -66,7 +60,7 @@ impl Obd2Reader for Elm327 {
 
 impl Elm327 {
     fn new() -> Result<Self> {
-        let mut ftdi_device = ftdi::find_by_vid_pid(0x0403, 0x6001)
+        let mut ftdi_device = ftdi::find_by_vid_pid(0x0404, 0x6001)
             .interface(ftdi::Interface::A)
             .open()?;
 

src/device/mod.rs

@@ -3,6 +3,9 @@
 mod elm327;
 pub use elm327::Elm327;
 
+mod elm327_linux;
+pub use elm327_linux::Elm327Linux;
+
 type Result<T> = std::result::Result<T, Error>;
 
 /// A lower-level API for using an OBD-II device

src/error.rs

@@ -17,7 +17,7 @@ pub enum Error {
 }
 
 #[derive(Debug)]
-pub struct DeviceError(crate::device::Error);
+pub struct DeviceError(pub crate::device::Error);
 
 impl From<super::device::Error> for Error {
     fn from(e: super::device::Error) -> Self {

src/interface.rs

@@ -6,7 +6,6 @@ use super::{device::Obd2BaseDevice, Error, Obd2Device, Result};
 ///
 /// Wraps an implementer of [Obd2BaseDevice] to allow for higher-level usage of the OBD-II
 /// interface.
-#[derive(Default)]
 pub struct Obd2<T: Obd2BaseDevice> {
     device: T,
 }
@@ -41,6 +40,14 @@ impl<T: Obd2BaseDevice> Obd2Device for Obd2<T> {
 }
 
 impl<T: Obd2BaseDevice> Obd2<T> {
+    pub fn new(dev: T) -> ::anyhow::Result<Self> {
+        let mut device = Obd2 {
+            device: dev
+        };
+
+        Ok(device)
+    }
+
     fn command(&mut self, command: &[u8]) -> Result<Vec<Vec<u8>>> {
         let response = self
             .device

src/lib.rs

@@ -22,7 +22,7 @@ pub mod commands;
 
 pub mod device;
 
-mod error;
+pub mod error;
 pub use error::Error;
 use error::Result;