M-Labs/thermostat
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add tec_u_meas

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This commit is contained in:
Astro 2020-05-18 21:38:13 +02:00
parent 28a71d34d7
commit 3d6e1f18a6
4 changed files with 48 additions and 5 deletions
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2
src/channel.rs
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@ -22,6 +22,7 @@ pub struct Channel<C: ChannelPins> {
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> {
@ -37,6 +38,7 @@ impl<C: ChannelPins> Channel<C> {
adc: pins.adc,
itec_pin: pins.itec_pin,
dac_feedback_pin: pins.dac_feedback_pin,
tec_u_meas_pin: pins.tec_u_meas_pin,
}
}
}

27
src/channels.rs
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@ -10,10 +10,12 @@ use crate::{
pub const CHANNELS: usize = 2;
// TODO: -pub
pub struct Channels {
pub channel0: Channel<Channel0>,
pub channel1: Channel<Channel1>,
pub adc: ad7172::Adc<pins::AdcSpi, pins::AdcNss>,
pub tec_u_meas_adc: pins::TecUMeasAdc,
pub pwm: pins::PwmPins,
}
@ -21,6 +23,7 @@ impl Channels {
pub fn new(pins: pins::Pins) -> Self {
let channel0 = Channel::new(pins.channel0);
let channel1 = Channel::new(pins.channel1);
let tec_u_meas_adc = pins.tec_u_meas_adc;
let pwm = pins.pwm;
let mut adc = ad7172::Adc::new(pins.adc_spi, pins.adc_nss).unwrap();
@ -43,7 +46,7 @@ impl Channels {
adc.setup_channel(1, ad7172::Input::Ain2, ad7172::Input::Ain3).unwrap();
adc.start_continuous_conversion().unwrap();
Channels { channel0, channel1, adc, pwm }
Channels { channel0, channel1, adc, tec_u_meas_adc, pwm }
}
pub fn channel_state<I: Into<usize>>(&mut self, channel: I) -> &mut ChannelState {
@ -138,4 +141,26 @@ impl Channels {
_ => unreachable!(),
}
}
pub fn read_tec_u_meas(&mut self, channel: usize) -> Volts {
match channel {
0 => {
let sample = self.tec_u_meas_adc.convert(
&self.channel0.tec_u_meas_pin,
stm32f4xx_hal::adc::config::SampleTime::Cycles_480
);
let mv = self.tec_u_meas_adc.sample_to_millivolts(sample);
Volts(mv as f64 / 1000.0)
}
1 => {
let sample = self.tec_u_meas_adc.convert(
&self.channel1.tec_u_meas_pin,
stm32f4xx_hal::adc::config::SampleTime::Cycles_480
);
let mv = self.tec_u_meas_adc.sample_to_millivolts(sample);
Volts(mv as f64 / 1000.0)
}
_ => unreachable!(),
}
}
}

7
src/main.rs
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@ -93,7 +93,7 @@ fn main() -> ! {
clocks, dp.TIM1, dp.TIM3,
dp.GPIOA, dp.GPIOB, dp.GPIOC, dp.GPIOE, dp.GPIOF, dp.GPIOG,
dp.SPI2, dp.SPI4, dp.SPI5,
dp.ADC1, dp.ADC2,
dp.ADC1, dp.ADC2, dp.ADC3,
);
let mut channels = Channels::new(pins);
timer::setup(cp.SYST, clocks);
@ -149,12 +149,15 @@ fn main() -> ! {
let itec = channels.read_itec(channel);
let tec_i = (itec - Volts(1.5)) / Ohms(0.4);
let tec_u_meas = channels.read_tec_u_meas(channel);
let state = channels.channel_state(channel);
let _ = writeln!(
socket, "t={} raw{}=0x{:06X} dac_feedback={}/{} itec={} tec={}",
socket, "t={} raw{}=0x{:06X} dac_feedback={}/{} itec={} tec={} tec_u_meas={}",
state.adc_time, channel, adc_data,
dac_feedback, dac_i,
itec, tec_i,
tec_u_meas,
);
}
}

17
src/pins.rs
View File

@ -16,7 +16,7 @@ use stm32f4xx_hal::{
rcc::Clocks,
pwm::{self, PwmChannels},
spi::{Spi, NoMiso},
stm32::{ADC1, ADC2, GPIOA, GPIOB, GPIOC, GPIOE, GPIOF, GPIOG, SPI2, SPI4, SPI5, TIM1, TIM3},
stm32::{ADC1, ADC2, ADC3, GPIOA, GPIOB, GPIOC, GPIOE, GPIOF, GPIOG, SPI2, SPI4, SPI5, TIM1, TIM3},
time::U32Ext,
};
use crate::channel::{Channel0, Channel1};
@ -29,6 +29,7 @@ pub trait ChannelPins {
type Adc;
type ItecPin;
type DacFeedbackPin;
type TecUMeasPin;
}
impl ChannelPins for Channel0 {
@ -38,6 +39,7 @@ impl ChannelPins for Channel0 {
type Adc = Adc<ADC1>;
type ItecPin = PA6<Analog>;
type DacFeedbackPin = PA4<Analog>;
type TecUMeasPin = PC2<Analog>;
}
impl ChannelPins for Channel1 {
@ -47,6 +49,7 @@ impl ChannelPins for Channel1 {
type Adc = Adc<ADC2>;
type ItecPin = PB0<Analog>;
type DacFeedbackPin = PA5<Analog>;
type TecUMeasPin = PC3<Analog>;
}
/// SPI peripheral used for communication with the ADC
@ -55,6 +58,7 @@ pub type AdcNss = PB12<Output<PushPull>>;
type Dac0Spi = Spi<SPI4, (PE2<Alternate<AF5>>, NoMiso, PE6<Alternate<AF5>>)>;
type Dac1Spi = Spi<SPI5, (PF7<Alternate<AF5>>, NoMiso, PF9<Alternate<AF5>>)>;
pub type TecUMeasAdc = Adc<ADC3>;
pub struct ChannelPinSet<C: ChannelPins> {
pub dac_spi: C::DacSpi,
@ -63,11 +67,13 @@ pub struct ChannelPinSet<C: ChannelPins> {
pub adc: C::Adc,
pub itec_pin: C::ItecPin,
pub dac_feedback_pin: C::DacFeedbackPin,
pub tec_u_meas_pin: C::TecUMeasPin,
}
pub struct Pins {
pub adc_spi: AdcSpi,
pub adc_nss: AdcNss,
pub tec_u_meas_adc: TecUMeasAdc,
pub pwm: PwmPins,
pub channel0: ChannelPinSet<Channel0>,
pub channel1: ChannelPinSet<Channel1>,
@ -80,7 +86,7 @@ impl Pins {
tim1: TIM1, tim3: TIM3,
gpioa: GPIOA, gpiob: GPIOB, gpioc: GPIOC, gpioe: GPIOE, gpiof: GPIOF, gpiog: GPIOG,
spi2: SPI2, spi4: SPI4, spi5: SPI5,
adc1: ADC1, adc2: ADC2,
adc1: ADC1, adc2: ADC2, adc3: ADC3,
) -> Self {
let gpioa = gpioa.split();
let gpiob = gpiob.split();
@ -97,6 +103,8 @@ impl Pins {
let adc_spi = Self::setup_spi_adc(clocks, spi2, gpiob.pb10, gpiob.pb14, gpiob.pb15);
let adc_nss = gpiob.pb12.into_push_pull_output();
let tec_u_meas_adc = Adc::adc3(adc3, true, Default::default());
let pwm = PwmPins::setup(
clocks, tim1, tim3,
gpioc.pc6, gpioc.pc7,
@ -114,6 +122,7 @@ impl Pins {
adc0.enable();
let itec0_pin = gpioa.pa6.into_analog();
let dac_feedback0_pin = gpioa.pa4.into_analog();
let tec_u_meas0_pin = gpioc.pc2.into_analog();
let channel0 = ChannelPinSet {
dac_spi: dac0_spi,
dac_sync: dac0_sync,
@ -121,6 +130,7 @@ impl Pins {
adc: adc0,
itec_pin: itec0_pin,
dac_feedback_pin: dac_feedback0_pin,
tec_u_meas_pin: tec_u_meas0_pin,
};
let (dac1_spi, dac1_sync) = Self::setup_dac1(
@ -133,6 +143,7 @@ impl Pins {
adc1.enable();
let itec1_pin = gpiob.pb0.into_analog();
let dac_feedback1_pin = gpioa.pa5.into_analog();
let tec_u_meas1_pin = gpioc.pc3.into_analog();
let channel1 = ChannelPinSet {
dac_spi: dac1_spi,
dac_sync: dac1_sync,
@ -140,10 +151,12 @@ impl Pins {
adc: adc1,
itec_pin: itec1_pin,
dac_feedback_pin: dac_feedback1_pin,
tec_u_meas_pin: tec_u_meas1_pin,
};
Pins {
adc_spi, adc_nss,
tec_u_meas_adc,
pwm,
channel0,
channel1,