Implement ADC channel traits

2 files changed, 34 insertions, 0 deletions

diff --git a/src/devices/channels.rs b/src/devices/channels.rs
new file mode 100644
index 0000000..35ad643
--- /dev/null
+++ b/src/devices/channels.rs
@@ -0,0 +1,32 @@
+//! ADC input channels
+use { Ads1x1x, ic, hal };
+
+/// ADC input channels
+#[allow(dead_code)]
+pub mod channel {
+    /// ADC input channel 0
+    pub struct A0;
+    /// ADC input channel 1
+    pub struct A1;
+    /// ADC input channel 2
+    pub struct A2;
+    /// ADC input channel 3
+    pub struct A3;
+}
+
+macro_rules! impl_channel {
+    ( $IC:ident, $CH:ident, $ID:expr ) => {
+        impl<DI, MODE> hal::adc::Channel<Ads1x1x<DI, ic::$IC, MODE>> for channel::$CH {
+            type ID = u8;
+
+            fn channel() -> Self::ID {
+                $ID
+            }
+        }
+    }
+}
+
+impl_channel!(Ads1013, A0, 0);
+impl_channel!(Ads1013, A1, 1);
+impl_channel!(Ads1113, A0, 0);
+impl_channel!(Ads1113, A1, 1);
diff --git a/src/devices/mod.rs b/src/devices/mod.rs
index e35196c..3bcc3fa 100644
--- a/src/devices/mod.rs
+++ b/src/devices/mod.rs
@@ -4,3 +4,5 @@ use super::private;
 pub mod ic;
 mod ads1x1x;
 mod construction;
+mod channels;
+pub use self::channels::channel;