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thermostat:reorganize fns structure, add setup seq

This commit is contained in:
linuswck 2024-01-04 17:13:46 +08:00
parent 23ee568ea7
commit 6cc2bc32c5
3 changed files with 114 additions and 143 deletions
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18
src/device/boot.rs
View File

@ -1,6 +1,7 @@
use super::{gpio, sys_timer, usb}; use super::{gpio, sys_timer, usb};
use crate::laser_diode::current_sources::*; use crate::laser_diode::current_sources::*;
use crate::thermostat::max1968::MAX1968; use crate::thermostat::max1968::{MAX1968};
use crate::thermostat::thermostat::Thermostat;
use fugit::ExtU32; use fugit::ExtU32;
use log::info; use log::info;
use stm32f4xx_hal::{ use stm32f4xx_hal::{
@ -20,7 +21,7 @@ const WATCHDOG_PERIOD: u32 = 30000;
pub fn bootup( pub fn bootup(
mut core_perif: CorePeripherals, mut core_perif: CorePeripherals,
perif: Peripherals, perif: Peripherals,
) -> (IndependentWatchdog, MAX1968) { ) -> (IndependentWatchdog, Thermostat) {
core_perif.SCB.enable_icache(); core_perif.SCB.enable_icache();
core_perif.SCB.enable_dcache(&mut core_perif.CPUID); core_perif.SCB.enable_dcache(&mut core_perif.CPUID);
@ -64,13 +65,12 @@ pub fn bootup(
laser.setup(); laser.setup();
laser.set_current(0.1).unwrap(); laser.set_current(0.1).unwrap();
let mut tec_driver = MAX1968::new(max1968_phy, perif.ADC1); let tec_driver = MAX1968::new(max1968_phy, perif.ADC1);
tec_driver.setup(); let mut thermostat = Thermostat::new(tec_driver);
thermostat.setup();
tec_driver.set_i(ElectricCurrent::new::<ampere>(1.0)); thermostat.set_i(ElectricCurrent::new::<ampere>(1.0));
thermostat.power_up();
tec_driver.power_up();
let mut wd = IndependentWatchdog::new(perif.IWDG); let mut wd = IndependentWatchdog::new(perif.IWDG);
wd.start(WATCHDOG_PERIOD.millis()); wd.start(WATCHDOG_PERIOD.millis());
@ -78,5 +78,5 @@ pub fn bootup(
info!("Kirdy setup complete"); info!("Kirdy setup complete");
(wd, tec_driver) (wd, thermostat)
} }

129
src/thermostat/max1968.rs
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@ -2,6 +2,7 @@ use core::marker::PhantomData;
use core::u16; use core::u16;
use crate::thermostat::ad5680; use crate::thermostat::ad5680;
use crate::thermostat::thermostat::{DAC_OUT_V_MAX, TEC_VSEC_BIAS_V};
use fugit::KilohertzU32; use fugit::KilohertzU32;
use stm32f4xx_hal::{ use stm32f4xx_hal::{
@ -26,54 +27,6 @@ use uom::si::{
}; };
pub const PWM_FREQ_KHZ: KilohertzU32 = KilohertzU32::from_raw(20); pub const PWM_FREQ_KHZ: KilohertzU32 = KilohertzU32::from_raw(20);
pub const R_SENSE: ElectricalResistance = ElectricalResistance {
dimension: PhantomData,
units: PhantomData,
value: 0.05,
};
// Rev 0_2: DAC Chip connects 3V3 reference voltage and thus provide 0-3.3V output range
// TODO: Rev 0_3: DAC Chip connects 3V3 reference voltage,
// which is then passed through a resistor divider to provide 0-3V output range
pub const DAC_OUT_V_MAX: f64 = 3.3;
const TEC_VSEC_BIAS_V: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 1.65,
};
// Kirdy Design Specs:
// MaxV = 5.0V
// MAX Current = +- 1.0A
const MAX_V_DUTY_TO_CURRENT_RATE: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 4.0 * 3.3,
};
pub const MAX_V_MAX: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 5.0,
};
const MAX_V_DUTY_MAX: f64 = MAX_V_MAX.value / MAX_V_DUTY_TO_CURRENT_RATE.value;
const MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0 / (10.0 * R_SENSE.value / 3.3),
};
pub const MAX_I_POS_CURRENT: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0,
};
pub const MAX_I_NEG_CURRENT: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0,
};
// .get::<ratio>() is not implemented for const
const MAX_I_POS_DUTY_MAX: f64 = MAX_I_POS_CURRENT.value / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE.value;
const MAX_I_NEG_DUTY_MAX: f64 = MAX_I_NEG_CURRENT.value / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE.value;
pub trait ChannelPins { pub trait ChannelPins {
type DacSpi: Transfer<u8>; type DacSpi: Transfer<u8>;
@ -146,12 +99,7 @@ pub struct MAX1968 {
pub pins_adc: Adc<ADC1>, pub pins_adc: Adc<ADC1>,
} }
pub struct PwmPins { pub enum PwmPinsEnum {
pub max_v0: PwmChannel<TIM4, 1>,
pub max_i_pos0: PwmChannel<TIM4, 2>,
pub max_i_neg0: PwmChannel<TIM4, 0>,
}
enum PwmPinsEnum {
MaxV, MaxV,
MaxPosI, MaxPosI,
MaxNegI, MaxNegI,
@ -164,34 +112,6 @@ pub enum AdcReadTarget {
VTec, VTec,
} }
impl PwmPins {
fn setup(clocks: Clocks, tim4: TIM4, max_v0: PB7, max_i_pos0: PB8, max_i_neg0: PB6) -> PwmPins {
fn init_pwm_pin<P: hal::PwmPin<Duty = u16>>(pin: &mut P) {
pin.set_duty(0);
pin.enable();
}
let channels = (
max_i_neg0.into_alternate::<2>(),
max_v0.into_alternate::<2>(),
max_i_pos0.into_alternate::<2>(),
);
let (mut max_i_neg0, mut max_v0, mut max_i_pos0) =
tim4.pwm_hz(channels, PWM_FREQ_KHZ.convert(), &clocks).split();
init_pwm_pin(&mut max_v0);
init_pwm_pin(&mut max_i_neg0);
init_pwm_pin(&mut max_i_pos0);
PwmPins {
max_v0,
max_i_pos0,
max_i_neg0,
}
}
}
impl<C: ChannelPins> MAX1968Phy<C> { impl<C: ChannelPins> MAX1968Phy<C> {
pub fn new(pins: MAX1968PinSet<C>) -> Self { pub fn new(pins: MAX1968PinSet<C>) -> Self {
MAX1968Phy { MAX1968Phy {
@ -223,19 +143,12 @@ impl MAX1968 {
} }
} }
pub fn setup(&mut self) { // pub fn setup(&mut self) {
self.power_down(); // self.power_down();
let vref = self.adc_read(AdcReadTarget::VREF, 2048); // let vref = self.adc_read(AdcReadTarget::VREF, 2048);
self.set_center_point(vref); // self.set_center_point(vref);
// }
// Todo: Add Calibration here
self.set_max_v(ElectricPotential::new::<volt>(5.0));
self.set_max_i_pos(ElectricCurrent::new::<ampere>(1.0));
self.set_max_i_neg(ElectricCurrent::new::<ampere>(1.0));
self.set_i(ElectricCurrent::new::<ampere>(0.0));
}
pub fn power_down(&mut self) { pub fn power_down(&mut self) {
let _ = self.phy.shdn.set_low(); let _ = self.phy.shdn.set_low();
@ -249,7 +162,7 @@ impl MAX1968 {
self.phy.center_pt = value; self.phy.center_pt = value;
} }
fn set_dac(&mut self, voltage: ElectricPotential) -> ElectricPotential { pub fn set_dac(&mut self, voltage: ElectricPotential) -> ElectricPotential {
let value = ((voltage / ElectricPotential::new::<volt>(DAC_OUT_V_MAX)).get::<ratio>() let value = ((voltage / ElectricPotential::new::<volt>(DAC_OUT_V_MAX)).get::<ratio>()
* (ad5680::MAX_VALUE as f64)) as u32; * (ad5680::MAX_VALUE as f64)) as u32;
self.phy.dac.set(value).unwrap(); self.phy.dac.set(value).unwrap();
@ -257,13 +170,6 @@ impl MAX1968 {
voltage voltage
} }
pub fn set_i(&mut self, i_tec: ElectricCurrent) -> ElectricCurrent {
let voltage = i_tec * 10.0 * R_SENSE + self.phy.center_pt;
let voltage = self.set_dac(voltage);
let i_tec = (voltage - self.phy.center_pt) / (10.0 * R_SENSE);
i_tec
}
// AN4073: ADC Reading Dispersion can be reduced through Averaging // AN4073: ADC Reading Dispersion can be reduced through Averaging
// Upon test, 16 Point Averaging = +-3 LSB Dispersion // Upon test, 16 Point Averaging = +-3 LSB Dispersion
pub fn adc_read(&mut self, adc_read_target: AdcReadTarget, avg_pt: u16) -> ElectricPotential { pub fn adc_read(&mut self, adc_read_target: AdcReadTarget, avg_pt: u16) -> ElectricPotential {
@ -329,7 +235,7 @@ impl MAX1968 {
-(self.adc_read(AdcReadTarget::VTec, 1) - TEC_VSEC_BIAS_V) * 4.0 -(self.adc_read(AdcReadTarget::VTec, 1) - TEC_VSEC_BIAS_V) * 4.0
} }
fn set_pwm(&mut self, pwm_pin: PwmPinsEnum, duty: f64, max_duty: f64) -> f64 { pub fn set_pwm(&mut self, pwm_pin: PwmPinsEnum, duty: f64, max_duty: f64) -> f64 {
fn set<P: hal::PwmPin<Duty = u16>>(pin: &mut P, duty: f64) -> f64 { fn set<P: hal::PwmPin<Duty = u16>>(pin: &mut P, duty: f64) -> f64 {
let max = pin.get_max_duty(); let max = pin.get_max_duty();
let value = ((duty * (max as f64)) as u16).min(max); let value = ((duty * (max as f64)) as u16).min(max);
@ -347,21 +253,4 @@ impl MAX1968 {
} }
} }
pub fn set_max_v(&mut self, max_v: ElectricPotential) -> ElectricPotential {
let duty = (max_v / MAX_V_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.set_pwm(PwmPinsEnum::MaxV, duty, MAX_V_DUTY_MAX);
duty * MAX_V_DUTY_TO_CURRENT_RATE
}
pub fn set_max_i_pos(&mut self, max_i_pos: ElectricCurrent) -> ElectricCurrent {
let duty = (max_i_pos / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.set_pwm(PwmPinsEnum::MaxPosI, duty, MAX_I_POS_DUTY_MAX);
duty * MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE
}
pub fn set_max_i_neg(&mut self, max_i_neg: ElectricCurrent) -> ElectricCurrent {
let duty = (max_i_neg / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.set_pwm(PwmPinsEnum::MaxNegI, duty, MAX_I_NEG_DUTY_MAX);
duty * MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE
}
} }

110
src/thermostat/thermostat.rs
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@ -1,6 +1,7 @@
use core::marker::PhantomData;
use crate::sys_timer; use crate::sys_timer;
use crate::thermostat::ad5680; use crate::thermostat::ad5680;
use crate::thermostat::max1968::{MAX1968, AdcReadTarget, DAC_OUT_V_MAX}; use crate::thermostat::max1968::{MAX1968, AdcReadTarget, PwmPinsEnum};
use log::info; use log::info;
use uom::si::{ use uom::si::{
electric_current::ampere, electric_current::ampere,
@ -10,6 +11,55 @@ use uom::si::{
ratio::ratio, ratio::ratio,
}; };
pub const R_SENSE: ElectricalResistance = ElectricalResistance {
dimension: PhantomData,
units: PhantomData,
value: 0.05,
};
// Rev 0_2: DAC Chip connects 3V3 reference voltage and thus provide 0-3.3V output range
// TODO: Rev 0_3: DAC Chip connects 3V3 reference voltage,
// which is then passed through a resistor divider to provide 0-3V output range
pub const DAC_OUT_V_MAX: f64 = 3.3;
pub const TEC_VSEC_BIAS_V: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 1.65,
};
// Kirdy Design Specs:
// MaxV = 5.0V
// MAX Current = +- 1.0A
const MAX_V_DUTY_TO_CURRENT_RATE: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 4.0 * 3.3,
};
pub const MAX_V_MAX: ElectricPotential = ElectricPotential {
dimension: PhantomData,
units: PhantomData,
value: 5.0,
};
const MAX_V_DUTY_MAX: f64 = MAX_V_MAX.value / MAX_V_DUTY_TO_CURRENT_RATE.value;
const MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0 / (10.0 * R_SENSE.value / 3.3),
};
pub const MAX_I_POS_CURRENT: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0,
};
pub const MAX_I_NEG_CURRENT: ElectricCurrent = ElectricCurrent {
dimension: PhantomData,
units: PhantomData,
value: 1.0,
};
// .get::<ratio>() is not implemented for const
const MAX_I_POS_DUTY_MAX: f64 = MAX_I_POS_CURRENT.value / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE.value;
const MAX_I_NEG_DUTY_MAX: f64 = MAX_I_NEG_CURRENT.value / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE.value;
pub struct Thermostat { pub struct Thermostat {
max1968: MAX1968, max1968: MAX1968,
// TADC // TADC
@ -21,8 +71,51 @@ impl Thermostat{
max1968 max1968
} }
} }
pub fn setup(&mut self){ pub fn setup(&mut self) {
self.max1968.setup(); self.power_down();
self.calibrate_dac_value();
self.set_i(ElectricCurrent::new::<ampere>(0.0));
self.set_max_v(ElectricPotential::new::<volt>(5.0));
self.set_max_i_pos(ElectricCurrent::new::<ampere>(1.0));
self.set_max_i_neg(ElectricCurrent::new::<ampere>(1.0));
self.max1968.power_up();
}
pub fn power_up(&mut self){
self.max1968.power_up();
}
pub fn power_down(&mut self){
self.max1968.power_down();
}
pub fn set_i(&mut self, i_tec: ElectricCurrent) -> ElectricCurrent {
let voltage = i_tec * 10.0 * R_SENSE + self.max1968.phy.center_pt;
let voltage = self.max1968.set_dac(voltage);
let i_tec = (voltage - self.max1968.phy.center_pt) / (10.0 * R_SENSE);
i_tec
}
pub fn set_max_v(&mut self, max_v: ElectricPotential) -> ElectricPotential {
let duty = (max_v / MAX_V_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.max1968.set_pwm(PwmPinsEnum::MaxV, duty, MAX_V_DUTY_MAX);
duty * MAX_V_DUTY_TO_CURRENT_RATE
}
pub fn set_max_i_pos(&mut self, max_i_pos: ElectricCurrent) -> ElectricCurrent {
let duty = (max_i_pos / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.max1968.set_pwm(PwmPinsEnum::MaxPosI, duty, MAX_I_POS_DUTY_MAX);
duty * MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE
}
pub fn set_max_i_neg(&mut self, max_i_neg: ElectricCurrent) -> ElectricCurrent {
let duty = (max_i_neg / MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE).get::<ratio>();
let duty = self.max1968.set_pwm(PwmPinsEnum::MaxNegI, duty, MAX_I_NEG_DUTY_MAX);
duty * MAX_I_POS_NEG_DUTY_TO_CURRENT_RATE
} }
/// Calibrates the DAC output to match vref of the MAX driver to reduce zero-current offset of the MAX driver output. /// Calibrates the DAC output to match vref of the MAX driver to reduce zero-current offset of the MAX driver output.
@ -50,7 +143,6 @@ impl Thermostat{
target_voltage = target_voltage / samples as f64; target_voltage = target_voltage / samples as f64;
let mut start_value = 1; let mut start_value = 1;
let mut best_error = ElectricPotential::new::<volt>(100.0); let mut best_error = ElectricPotential::new::<volt>(100.0);
let before_cal = self.max1968.phy.center_pt;
for step in (0..18).rev() { for step in (0..18).rev() {
info!("Step: {} Calibrating", step); info!("Step: {} Calibrating", step);
let mut prev_value = start_value; let mut prev_value = start_value;
@ -69,20 +161,10 @@ impl Thermostat{
let vref = (value as f64 / ad5680::MAX_VALUE as f64) * ElectricPotential::new::<volt>(DAC_OUT_V_MAX); let vref = (value as f64 / ad5680::MAX_VALUE as f64) * ElectricPotential::new::<volt>(DAC_OUT_V_MAX);
self.max1968.set_center_point(vref); self.max1968.set_center_point(vref);
} }
prev_value = value; prev_value = value;
} }
} }
loop {
info!("Before Calibration, VREF = {:?}", before_cal);
info!("After Calibration, VREF = {:?}", self.max1968.phy.center_pt);
self.max1968.set_i(ElectricCurrent::new::<ampere>(0.0));
info!("VREF Value {:?}", self.max1968.adc_read(AdcReadTarget::VREF, 64));
info!("DAC VFB Value {:?}", self.max1968.adc_read(AdcReadTarget::DacVfb, 64));
sys_timer::sleep(100);
}
} }
} }