culvert_async/client/
version.rs

1use hdmi_hal_async::scdc::ScdcTransport;
2
3use crate::ScdcError;
4
5use super::Scdc;
6use super::address;
7
8impl<T: ScdcTransport> Scdc<T> {
9    /// Reads the sink's SCDC protocol version from `Sink_Version` (0x01).
10    pub async fn read_sink_version(&mut self) -> Result<u8, ScdcError<T::Error>> {
11        self.transport
12            .read(address::SINK_VERSION)
13            .await
14            .map_err(ScdcError::Transport)
15    }
16
17    /// Writes the source's SCDC protocol version to `Source_Version` (0x02).
18    pub async fn write_source_version(&mut self, version: u8) -> Result<(), ScdcError<T::Error>> {
19        self.transport
20            .write(address::SOURCE_VERSION, version)
21            .await
22            .map_err(ScdcError::Transport)
23    }
24}
25
26#[cfg(test)]
27mod tests {
28    use super::super::Scdc;
29    use super::super::test_transport::TestTransport;
30
31    #[pollster::test]
32    async fn read_sink_version_returns_register_value() {
33        let mut sim = TestTransport::new();
34        sim.set(0x01, 0x01);
35        assert_eq!(Scdc::new(sim).read_sink_version().await.unwrap(), 0x01);
36    }
37
38    #[pollster::test]
39    async fn write_source_version_writes_register() {
40        let mut scdc = Scdc::new(TestTransport::new());
41        scdc.write_source_version(0x01).await.unwrap();
42        assert_eq!(scdc.into_transport().get(0x02), 0x01);
43    }
44
45    #[pollster::test]
46    async fn transport_error_propagates() {
47        assert!(
48            Scdc::new(TestTransport::failing_after(0))
49                .read_sink_version()
50                .await
51                .is_err()
52        );
53        assert!(
54            Scdc::new(TestTransport::failing_after(0))
55                .write_source_version(1)
56                .await
57                .is_err()
58        );
59    }
60}
culvert_async/client/version.rs

culvert_async/client/
version.rs
