forked from M-Labs/thermostat
53 lines
1.4 KiB
Rust
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,
|
|
}
|
|
}
|
|
}
|