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|
//! ADC input channels
use crate::{ic, Ads1x1x, BitFlags as BF, Config};
use embedded_hal::adc;
/// ADC input channel selection
#[allow(dead_code)]
pub mod channel {
/// Measure single-ended signal on input channel 0
pub struct SingleA0;
/// Measure single-ended signal on input channel 1
pub struct SingleA1;
/// Measure single-ended signal on input channel 2
pub struct SingleA2;
/// Measure single-ended signal on input channel 3
pub struct SingleA3;
/// Measure signal on input channel 0 differentially to signal on input channel 1
pub struct DifferentialA0A1;
/// Measure signal on input channel 0 differentially to signal on input channel 3
pub struct DifferentialA0A3;
/// Measure signal on input channel 1 differentially to signal on input channel 3
pub struct DifferentialA1A3;
/// Measure signal on input channel 3 differentially to signal on input channel 3
pub struct DifferentialA2A3;
}
#[derive(Debug, Clone, Copy)]
pub enum ChannelSelection {
SingleA0,
SingleA1,
SingleA2,
SingleA3,
DifferentialA0A1,
DifferentialA0A3,
DifferentialA1A3,
DifferentialA2A3,
}
macro_rules! impl_channel {
( $IC:ident, $CH:ident ) => {
impl<DI, CONV, MODE> adc::Channel<Ads1x1x<DI, ic::$IC, CONV, MODE>> for channel::$CH {
type ID = ChannelSelection;
fn channel() -> Self::ID {
ChannelSelection::$CH
}
}
};
}
impl_channel!(Ads1013, DifferentialA0A1);
impl_channel!(Ads1113, DifferentialA0A1);
impl_channel!(Ads1014, DifferentialA0A1);
impl_channel!(Ads1114, DifferentialA0A1);
impl_channel!(Ads1015, DifferentialA0A1);
impl_channel!(Ads1015, DifferentialA0A3);
impl_channel!(Ads1015, DifferentialA1A3);
impl_channel!(Ads1015, DifferentialA2A3);
impl_channel!(Ads1015, SingleA0);
impl_channel!(Ads1015, SingleA1);
impl_channel!(Ads1015, SingleA2);
impl_channel!(Ads1015, SingleA3);
impl_channel!(Ads1115, DifferentialA0A1);
impl_channel!(Ads1115, DifferentialA0A3);
impl_channel!(Ads1115, DifferentialA1A3);
impl_channel!(Ads1115, DifferentialA2A3);
impl_channel!(Ads1115, SingleA0);
impl_channel!(Ads1115, SingleA1);
impl_channel!(Ads1115, SingleA2);
impl_channel!(Ads1115, SingleA3);
impl Config {
pub(crate) fn with_mux_bits(&self, ch: ChannelSelection) -> Self {
use self::ChannelSelection as CS;
match ch {
CS::DifferentialA0A1 => self
.with_low(BF::MUX2)
.with_low(BF::MUX1)
.with_low(BF::MUX0),
CS::DifferentialA0A3 => self
.with_low(BF::MUX2)
.with_low(BF::MUX1)
.with_high(BF::MUX0),
CS::DifferentialA1A3 => self
.with_low(BF::MUX2)
.with_high(BF::MUX1)
.with_low(BF::MUX0),
CS::DifferentialA2A3 => self
.with_low(BF::MUX2)
.with_high(BF::MUX1)
.with_high(BF::MUX0),
CS::SingleA0 => self
.with_high(BF::MUX2)
.with_low(BF::MUX1)
.with_low(BF::MUX0),
CS::SingleA1 => self
.with_high(BF::MUX2)
.with_low(BF::MUX1)
.with_high(BF::MUX0),
CS::SingleA2 => self
.with_high(BF::MUX2)
.with_high(BF::MUX1)
.with_low(BF::MUX0),
CS::SingleA3 => self
.with_high(BF::MUX2)
.with_high(BF::MUX1)
.with_high(BF::MUX0),
}
}
}
|
