Added this i2c example. It reads data from the Bosch BME680 sensor using i2c. (#41)

Co-authored-by: Nando Bongers <[email protected]>

Author: NandoBongers

Cargo.toml

@@ -61,6 +61,7 @@ cfg-if = "0.1.10"
 rtt-target = { version = "0.3.0", features = ["cortex-m"] }
 panic-rtt-target = { version = "0.1.1", features = ["cortex-m"] }
 mpu6050 = "0.1.4"
+bme680 = "0.6.0"
 
 #TODO: Separate feature sets
 [features]

examples/i2c-bme680.rs

@@ -0,0 +1,71 @@
+//This example reads data from the Bosch BME680 (gas, humidity, temperature, pressure) sensor using I2C.
+#![deny(unsafe_code)]
+#![no_main]
+#![no_std]
+
+use bme680::*;
+use core::time::Duration;
+use embedded_hal::blocking::delay::DelayMs;
+use hal::delay::DelayFromCountDownTimer;
+use hal::i2c::Config;
+use hal::prelude::*;
+use hal::stm32;
+use hal::timer::Timer;
+use stm32g4xx_hal as hal;
+
+use cortex_m_rt::entry;
+use log::info;
+
+#[macro_use]
+mod utils;
+
+#[entry]
+fn main() -> ! {
+    utils::logger::init();
+
+    let dp = stm32::Peripherals::take().expect("cannot take peripherals");
+    let cp = cortex_m::Peripherals::take().expect("cannot take core peripherals");
+
+    let mut rcc = dp.RCC.constrain();
+    let gpiob = dp.GPIOB.split(&mut rcc);
+
+    let sda = gpiob.pb9.into_alternate_open_drain();
+    let scl = gpiob.pb8.into_alternate_open_drain();
+
+    let i2c = dp.I2C1.i2c(sda, scl, Config::new(100.khz()), &mut rcc);
+
+    let mut delayer = cp.SYST.delay(&rcc.clocks);
+    let timer2 = Timer::new(dp.TIM2, &rcc.clocks);
+    let mut delay = DelayFromCountDownTimer::new(timer2.start_count_down(100.ms()));
+
+    let mut dev =
+        Bme680::init(i2c, &mut delayer, I2CAddress::Secondary).expect("Init function failed");
+
+    let settings = SettingsBuilder::new()
+        .with_humidity_oversampling(OversamplingSetting::OS2x)
+        .with_pressure_oversampling(OversamplingSetting::OS4x)
+        .with_temperature_oversampling(OversamplingSetting::OS8x)
+        .with_temperature_filter(IIRFilterSize::Size3)
+        .with_gas_measurement(Duration::from_millis(1500), 320, 25)
+        .with_temperature_offset(-2.2)
+        .with_run_gas(true)
+        .build();
+
+    let profile_dur = dev.get_profile_dur(&settings.0).unwrap();
+    dev.set_sensor_settings(&mut delayer, settings).unwrap();
+    dev.set_sensor_mode(&mut delayer, PowerMode::ForcedMode)
+        .unwrap();
+    let sensor_settings = dev.get_sensor_settings(settings.1);
+
+    loop {
+        delay.delay_ms(500u32);
+        let power_mode = dev.get_sensor_mode();
+        dev.set_sensor_mode(&mut delayer, PowerMode::ForcedMode)
+            .unwrap();
+        let (data, _state) = dev.get_sensor_data(&mut delayer).unwrap();
+        info!("Temperature {}°C", data.temperature_celsius());
+        info!("Pressure {}hPa", data.pressure_hpa());
+        info!("Humidity {}%", data.humidity_percent());
+        info!("Gas Resistence {}Ω", data.gas_resistance_ohm());
+    }
+}