Initial node implementation (#4)

Reviewed-on: #4 Co-authored-by: Zack <zack@bfpower.io> Co-committed-by: Zack <zack@bfpower.io>
2023-07-19 18:09:13 +00:00
parent 886fbf0020
commit 6fc828e864
40 changed files with 2079 additions and 44 deletions
@@ -0,0 +1,126 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait, async_fn_in_trait)]
+
+use core::cell::Cell;
+use cortex_m::prelude::{
+    _embedded_hal_blocking_delay_DelayMs, _embedded_hal_blocking_delay_DelayUs,
+};
+use {defmt_rtt as _, panic_probe as _};
+
+use {embassy_executor as executor, embassy_stm32 as stm32};
+
+use ads1256::standard::input::{Differential, SingleEnded};
+use ads1256::{
+    AdControl, Ads1256, AutoCal, BitOrder, BlockingDelay, Buffer, ClockOut, Config, DState,
+    DataRate, DigitalIo, DigitalIoDirection, DigitalIoState, DioDirection, Gain, Multiplexer,
+    MuxInput, OutputPin, Sdcs, SpiBus, Status, Wait,
+};
+use embassy_time::{Delay, Duration, Timer};
+use executor::Spawner;
+use stm32::dma::NoDma;
+use stm32::exti::ExtiInput;
+use stm32::gpio::{Input, Level, Output, Pull, Speed};
+use stm32::spi::Spi;
+use stm32::time::Hertz;
+use stm32::{pac, spi};
+
+use uom::si::electric_potential::{millivolt, volt};
+use uom::si::f32;
+
+use defmt::{debug, error, info, trace, unwrap};
+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::AIn1),
+    ad_control: AdControl::setting(Gain::X64, Sdcs::Off, ClockOut::Off),
+    data_rate: DataRate::Sps2_5,
+    digital_io: DigitalIo::setting(DigitalIoState::default(), DigitalIoDirection::default()),
+};
+
+struct Ads1256Delay;
+
+impl ads1256::BlockingDelay for Ads1256Delay {
+    #[inline]
+    fn t6_delay(&mut self) {
+        Delay.delay_us(1u32);
+    }
+
+    fn t11_1_delay(&mut self) {}
+
+    fn t11_2_delay(&mut self) {}
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    unsafe {
+        pac::FLASH.acr().modify(|v| {
+            v.set_prften(true);
+            v.set_icen(true);
+            v.set_dcen(true);
+        });
+    }
+
+    let p = embassy_stm32::init(Default::default());
+
+    let mut spi_conf = spi::Config::default();
+    spi_conf.mode = spi::MODE_1;
+    spi_conf.bit_order = spi::BitOrder::MsbFirst;
+
+    let ads1256_data_ready = ExtiInput::new(Input::new(p.PF6, Pull::Up), p.EXTI6);
+    let select_ads1256 = Output::new(p.PF7, Level::High, Speed::VeryHigh);
+
+    let mut spi = Spi::new(
+        p.SPI3,
+        p.PC10,
+        p.PC12,
+        p.PC11,
+        NoDma,
+        NoDma,
+        Hertz(ads1256::defaults::SPI_CLK_HZ),
+        spi_conf,
+    );
+
+    let mut ads_1256 = Ads1256::new(Ads1256Delay, select_ads1256, ads1256_data_ready);
+    ads_1256.write_config(&mut spi, AUTOCAL_CONF).unwrap();
+    ads_1256.self_calibrate(&mut spi).await.unwrap();
+
+    loop {
+        let gain = Gain::X4;
+        let reference = ads_1256
+            .autocal_convert(
+                &mut spi,
+                SingleEnded::AIn2.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: {}°C", reference_celsius);
+
+        let gain = Gain::X64;
+        let voltage = ads_1256
+            .autocal_convert(
+                &mut spi,
+                Differential::AIn0.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).unwrap();
+        let celsius = temperature.get::<degree_celsius>();
+        info!("Thermocouple temperature: {}°C, millivolts: {}", celsius, mv);
+    }
+}