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//! Continuous measurement mode
use crate::{
conversion, devices::OperatingMode, interface, mode, Ads1x1x, ChannelId, Error,
ModeChangeError, Register,
};
use core::marker::PhantomData;
impl<DI, IC, CONV, E> Ads1x1x<DI, IC, CONV, mode::Continuous>
where
DI: interface::ReadData<Error = E> + interface::WriteData<Error = E>,
CONV: conversion::ConvertMeasurement,
{
/// Change operating mode to OneShot
pub fn into_one_shot(
mut self,
) -> Result<Ads1x1x<DI, IC, CONV, mode::OneShot>, ModeChangeError<E, Self>> {
if let Err(Error::I2C(e)) = self.set_operating_mode(OperatingMode::OneShot) {
return Err(ModeChangeError::I2C(e, self));
}
Ok(Ads1x1x {
iface: self.iface,
config: self.config,
fsr: self.fsr,
a_conversion_was_started: false,
_conv: PhantomData,
_ic: PhantomData,
_mode: PhantomData,
})
}
/// Read the most recent measurement
pub fn read(&mut self) -> Result<i16, Error<E>> {
let value = self.iface.read_register(Register::CONVERSION)?;
Ok(CONV::convert_measurement(value))
}
/// Select the channel for measurements.
///
/// Note that when changing the channel in continuous conversion mode, the
/// ongoing conversion will be completed.
/// The following conversions will use the new channel configuration.
#[allow(unused_variables)]
pub fn select_channel<CH: ChannelId<Self>>(&mut self, channel: CH) -> Result<(), Error<E>> {
let config = self.config.with_mux_bits(CH::channel_id());
self.iface.write_register(Register::CONFIG, config.bits)?;
self.config = config;
Ok(())
}
}
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