Update stuff

src/uart_parser.rs

@@ -0,0 +1,44 @@
+use core::f32;
+use core::str::{self, FromStr};
+
+pub struct Parser {
+    pub curr: u32,
+    pub buffer: [u8; 100],
+}
+
+impl Parser {
+    pub fn new() -> Self {
+        Self {
+            curr: 0,
+            buffer: [0_u8; 100],
+        }
+    }
+
+    pub fn input_byte(&mut self, b: u8) -> Option<u32> {
+        if b == b'\n' || b == b'\r' {
+            let mut split = self.buffer.split(|num| {
+                num == &(u8::try_from(',').unwrap())
+                    || num == &(u8::try_from(' ').unwrap())
+                    || num == &0
+            }); // TODO: the use \0 and ' ' as split is kinda hacky
+            let buf = split.next()?;
+
+            let ret = if buf.contains(&b'.') {
+                Some((4095f32 / 3.3 * f32::from_str(str::from_utf8(buf).ok()?).ok()?) as u32)
+            } else {
+                Some(u32::from_str(str::from_utf8(buf).ok()?).ok()?)
+            };
+
+            for i in 0..self.curr {
+                self.buffer[i as usize] = 0;
+            }
+
+            self.curr = 0;
+            ret
+        } else {
+            self.buffer[self.curr as usize] = b;
+            self.curr += 1;
+            None
+        }
+    }
+}