forked from M-Labs/thermostat
59 lines
1.7 KiB
Rust
59 lines
1.7 KiB
Rust
use crate::{
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ad5680, ad7172,
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channel_state::ChannelState,
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pins::{ChannelPinSet, ChannelPins},
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};
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use stm32f4xx_hal::hal::digital::v2::OutputPin;
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use uom::si::{electric_potential::volt, f64::ElectricPotential};
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/// Marker type for the first channel
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pub struct Channel0;
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/// Marker type for the second channel
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pub struct Channel1;
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pub struct Channel<C: ChannelPins> {
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pub state: ChannelState,
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/// for `i_set`
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pub dac: ad5680::Dac<C::DacSpi, C::DacSync>,
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/// Measured vref of MAX driver chip
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pub vref_meas: ElectricPotential,
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pub shdn: C::Shdn,
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pub vref_pin: C::VRefPin,
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pub itec_pin: C::ITecPin,
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/// feedback from `dac` output
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pub dac_feedback_pin: C::DacFeedbackPin,
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pub tec_u_meas_pin: C::TecUMeasPin,
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}
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impl<C: ChannelPins> Channel<C> {
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pub fn new(pins: ChannelPinSet<C>, adc_calibration: ad7172::ChannelCalibration) -> Self {
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let state = ChannelState::new(adc_calibration);
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let mut dac = ad5680::Dac::new(pins.dac_spi, pins.dac_sync);
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let _ = dac.set(0);
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// sensible dummy preset taken from datasheet. calibrate_dac_value() should be used to override this value.
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let vref_meas = ElectricPotential::new::<volt>(1.5);
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Channel {
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state,
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dac,
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vref_meas,
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shdn: pins.shdn,
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vref_pin: pins.vref_pin,
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itec_pin: pins.itec_pin,
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dac_feedback_pin: pins.dac_feedback_pin,
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tec_u_meas_pin: pins.tec_u_meas_pin,
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}
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}
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// power up TEC
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pub fn power_up(&mut self) {
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let _ = self.shdn.set_high();
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}
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// power down TEC
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pub fn power_down(&mut self) {
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let _ = self.shdn.set_low();
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}
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}
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