BFPOWER/physical
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Added LM35

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This commit is contained in:
Zachary Sunforge
2023-07-18 19:52:50 -07:00
parent 45bc1707e9
commit 5e46116976
8 changed files with 64 additions and 19 deletions
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2
examples/ads1256/Cargo.toml
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@ -9,7 +9,7 @@ license.workspace = true
[dependencies.physical]
path = "../.."
features = ["thermocouple_k"]
features = ["thermocouple_k", "lm35"]
[dependencies.physical-node]
path = "../../node"
features = ["embassy-sync"]

46
examples/ads1256/src/bin/thermocouple.rs
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@ -10,7 +10,7 @@ use {defmt_rtt as _, panic_probe as _};
use {embassy_executor as executor, embassy_stm32 as stm32};
use ads1256::standard::input::SingleEnded;
use ads1256::standard::input::{Differential, SingleEnded};
use ads1256::{
AdControl, Ads1256, AutoCal, BitOrder, BlockingDelay, Buffer, ClockOut, Config, DState,
DataRate, DigitalIo, DigitalIoDirection, DigitalIoState, DioDirection, Gain, Multiplexer,
@ -29,12 +29,12 @@ use uom::si::electric_potential::{millivolt, volt};
use uom::si::f32;
use defmt::{debug, error, info, trace, unwrap};
use physical::transducer::thermocouple_k;
use physical::transducer::{lm35, thermocouple_k};
use uom::si::thermodynamic_temperature::degree_celsius;
const AUTOCAL_CONF: Config = Config {
status: Status::setting(Buffer::Enabled, AutoCal::Enabled, BitOrder::MostSigFirst),
multiplexer: Multiplexer::setting(MuxInput::AIn0, MuxInput::Common),
multiplexer: Multiplexer::setting(MuxInput::AIn0, MuxInput::AIn1),
ad_control: AdControl::setting(Gain::X64, Sdcs::Off, ClockOut::Off),
data_rate: DataRate::Sps2_5,
digital_io: DigitalIo::setting(DigitalIoState::default(), DigitalIoDirection::default()),
@ -87,24 +87,40 @@ async fn main(spawner: Spawner) {
ads_1256.write_config(&mut spi, AUTOCAL_CONF).unwrap();
ads_1256.self_calibrate(&mut spi).await.unwrap();
let reference_temp = f32::ThermodynamicTemperature::new::<degree_celsius>(26.0);
// Zero test
let zero_voltage = f32::ElectricPotential::new::<millivolt>(0.0);
let zero_temperature = thermocouple_k::convert_direct(zero_voltage, reference_temp).unwrap();
let zero_celsius = zero_temperature.get::<degree_celsius>();
info!("Zero test: {}", zero_celsius);
loop {
Delay.delay_ms(1_000u16);
let gain = Gain::X2;
let reference = ads_1256
.autocal_convert(
&mut spi,
Differential::AIn0.into(),
None,
Some(AUTOCAL_CONF.ad_control.with_gain(gain)),
None,
false,
)
.await
.unwrap()
.to_voltage(gain);
let reference = lm35::convert(reference).unwrap();
let reference_celsius = reference.get::<degree_celsius>();
info!("Reference junction temperature in degrees celsius: {}", reference_celsius);
let gain = Gain::X64;
let voltage = ads_1256
.read_data(&mut spi)
.autocal_convert(
&mut spi,
Differential::AIn1.into(),
None,
Some(AUTOCAL_CONF.ad_control.with_gain(gain)),
None,
false,
)
.await
.unwrap()
.to_voltage(AUTOCAL_CONF.ad_control.gain());
let mv = voltage.get::<millivolt>();
let temperature = thermocouple_k::convert_direct(voltage, reference_temp).unwrap();
let temperature = thermocouple_k::convert_direct(voltage, reference).unwrap();
let celsius = temperature.get::<degree_celsius>();
info!("Temperature in degrees celsius: {}, millivolts: {}", celsius, mv);
info!("Thermocouple temperature in degrees celsius: {}, millivolts: {}", celsius, mv);
}
}