Merge pull request #37 from hw0lff/fix-bindata

Add Attribute::get_bytes and fix Sensor::get_bin_data

Author: pixix4

src/attribute.rs

@@ -118,6 +118,15 @@ impl Attribute {
         })
     }
 
+    /// Returns the current content of the wrapped file.
+    pub fn get_bytes(&self) -> Ev3Result<Vec<u8>> {
+        let mut value: Vec<u8> = Vec::new();
+        let mut file = self.file.lock().unwrap();
+        file.seek(SeekFrom::Start(0))?;
+        file.read_to_end(&mut value)?;
+        Ok(value)
+    }
+
     /// Returns the current value of the wrapped file.
     fn get_str(&self) -> Ev3Result<String> {
         let mut value = String::new();

src/sensors/sensor.rs

@@ -6,8 +6,8 @@ use crate::{Device, Ev3Result};
 pub trait Sensor: Device {
     /// Reading the file will give the unscaled raw values in the `value<N>` attributes.
     /// Use `bin_data_format`, `num_values` and the individual sensor documentation to determine how to interpret the data.
-    fn get_bin_data(&self) -> Ev3Result<String> {
-        self.get_attribute("bin_data").get()
+    fn get_bin_data(&self) -> Ev3Result<Vec<u8>> {
+        self.get_attribute("bin_data").get_bytes()
     }
 
     /// Returns the format of the values in `bin_data` for the current mode. Possible values are: