thermostat/src/channel.rs

53 lines
1.4 KiB
Rust

use stm32f4xx_hal::hal::digital::v2::OutputPin;
use crate::{
ad5680,
channel_state::ChannelState,
pins::{ChannelPins, ChannelPinSet},
};
/// Marker type for the first channel
pub struct Channel0;
/// Marker type for the second channel
pub struct Channel1;
pub struct Channel<C: ChannelPins> {
pub state: ChannelState,
/// for `i_set`
pub dac: ad5680::Dac<C::DacSpi, C::DacSync>,
/// 1 / Volts
pub dac_factor: f64,
pub shdn: C::Shdn,
/// stm32f4 integrated adc
pub adc: C::Adc,
pub vref_pin: C::VRefPin,
pub itec_pin: C::ItecPin,
/// feedback from `dac` output
pub dac_feedback_pin: C::DacFeedbackPin,
pub tec_u_meas_pin: C::TecUMeasPin,
}
impl<C: ChannelPins> Channel<C> {
pub fn new(mut pins: ChannelPinSet<C>) -> Self {
let state = ChannelState::default();
let mut dac = ad5680::Dac::new(pins.dac_spi, pins.dac_sync);
let _ = dac.set(0);
// power up TEC
let _ = pins.shdn.set_high();
// sensible dummy preset. calibrate_i_set() must be used.
let dac_factor = ad5680::MAX_VALUE as f64 / 5.0;
Channel {
state,
dac, dac_factor,
shdn: pins.shdn,
adc: pins.adc,
vref_pin: pins.vref_pin,
itec_pin: pins.itec_pin,
dac_feedback_pin: pins.dac_feedback_pin,
tec_u_meas_pin: pins.tec_u_meas_pin,
}
}
}