Add function to select the measurement channel in continuous mode

1 files changed, 19 insertions, 2 deletions

diff --git a/src/devices/mode/continuous.rs b/src/devices/mode/continuous.rs
index 6bf5201..cd3edee 100644
--- a/src/devices/mode/continuous.rs
+++ b/src/devices/mode/continuous.rs
@@ -1,7 +1,8 @@
-//! Common functions
+//! Continuous measurement mode
 
 use core::marker::PhantomData;
-use { Ads1x1x, mode, Error, interface };
+use { Ads1x1x, conversion, Error, hal, interface, mode, Register };
+use channels::ChannelSelection;
 use super::super::OperatingMode;
 
 impl<DI, IC, CONV, E> Ads1x1x<DI, IC, CONV, mode::Continuous>
@@ -29,3 +30,19 @@ where
         Ok(())
     }
 }
+
+impl<DI, IC, CONV, E> Ads1x1x<DI, IC, CONV, mode::Continuous>
+where
+    DI: interface::ReadData<Error = E> + interface::WriteData<Error = E>,
+    CONV: conversion::ConvertMeasurement,
+{
+    /// Select the channel for measurements.
+    pub fn select_channel<CH>(&mut self, _channel: &mut CH) -> Result<(), Error<E>>
+    where
+        CH: hal::adc::Channel<Ads1x1x<DI, IC, CONV, mode::OneShot>, ID = ChannelSelection> {
+        let config = self.config.with_mux_bits(CH::channel());
+        self.iface.write_register(Register::CONFIG, config.bits)?;
+        self.config = config;
+        Ok(())
+    }
+}