ri_esp_core/
lib.rs

1#![no_std]
2
3use heapless::String;
4
5#[derive(Debug, Clone, Copy, PartialEq, Eq)]
6pub enum ReadingStatus {
7    Ok,
8    SensorReadFailed,
9    NotConnected,
10    Stale,
11}
12
13#[derive(Debug, Clone, Copy, PartialEq)]
14pub struct EnvironmentReading {
15    pub temperature_c: Option<f32>,
16    pub humidity_pct: Option<f32>,
17    pub heat_index_c: Option<f32>,
18    pub status: ReadingStatus,
19}
20
21impl EnvironmentReading {
22    pub const fn failed() -> Self {
23        Self {
24            temperature_c: None,
25            humidity_pct: None,
26            heat_index_c: None,
27            status: ReadingStatus::SensorReadFailed,
28        }
29    }
30    pub const fn new(temperature_c: f32, humidity_pct: f32, heat_index_c: Option<f32>) -> Self {
31        Self {
32            temperature_c: Some(temperature_c),
33            humidity_pct: Some(humidity_pct),
34            heat_index_c,
35            status: ReadingStatus::Ok,
36        }
37    }
38}
39
40#[derive(Debug, Clone, PartialEq)]
41pub struct DeviceStatus<const N: usize> {
42    pub device_id: String<N>,
43    pub uptime_ms: u64,
44    pub wifi_rssi: Option<i32>,
45    pub ip: String<32>,
46}
47
48pub trait Sensor {
49    type Reading;
50    type Error;
51    fn read(&mut self) -> Result<Self::Reading, Self::Error>;
52}
53
54pub trait TextDisplay {
55    type Error;
56    fn clear(&mut self) -> Result<(), Self::Error>;
57    fn write_line(&mut self, row: u8, text: &str) -> Result<(), Self::Error>;
58}
59
60pub trait StatusDisplay: TextDisplay {
61    fn show_environment(&mut self, reading: &EnvironmentReading) -> Result<(), Self::Error> {
62        self.clear()?;
63        match reading.status {
64            ReadingStatus::Ok => {
65                self.write_line(0, "sensor ok")?;
66                // Formatting floats is deliberately left to app/widget crates.
67                self.write_line(1, "temp/humidity valid")
68            }
69            _ => self.write_line(0, "sensor failed"),
70        }
71    }
72}
73
74impl<T: TextDisplay> StatusDisplay for T {}
75
76#[cfg(test)]
77mod tests {
78    use super::*;
79    #[test]
80    fn environment_reading_ok() {
81        let r = EnvironmentReading::new(22.0, 44.0, Some(21.8));
82        assert_eq!(r.status, ReadingStatus::Ok);
83        assert_eq!(r.temperature_c, Some(22.0));
84    }
85}
ri_esp_core/lib.rs

ri_esp_core/
lib.rs
