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//! Common functions
use crate::{devices::OperatingMode, Ads1x1x, BitFlags, Config, Error, Register};
impl<I2C, IC, CONV, MODE, E> Ads1x1x<I2C, IC, CONV, MODE>
where
I2C: embedded_hal::i2c::I2c<Error = E>,
{
pub(super) fn write_register(&mut self, register: u8, data: u16) -> Result<(), Error<E>> {
let data = data.to_be_bytes();
let payload: [u8; 3] = [register, data[0], data[1]];
self.i2c.write(self.address, &payload).map_err(Error::I2C)
}
pub(super) fn read_register(&mut self, register: u8) -> Result<u16, Error<E>> {
let mut data = [0, 0];
self.i2c
.write_read(self.address, &[register], &mut data)
.map_err(Error::I2C)
.and(Ok(u16::from_be_bytes(data)))
}
pub(super) fn set_operating_mode(&mut self, mode: OperatingMode) -> Result<(), Error<E>> {
let config = match mode {
OperatingMode::OneShot => self.config.with_high(BitFlags::OP_MODE),
OperatingMode::Continuous => self.config.with_low(BitFlags::OP_MODE),
};
self.write_register(Register::CONFIG, config.bits)?;
self.config = config;
Ok(())
}
/// Read whether a measurement is currently in progress.
pub fn is_measurement_in_progress(&mut self) -> Result<bool, Error<E>> {
let config = Config {
bits: self.read_register(Register::CONFIG)?,
};
Ok(!config.is_high(BitFlags::OS))
}
}
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