measure pressure and temp!

firmware/Cargo.lock

@@ -94,6 +94,16 @@ version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
 
+[[package]]
+name = "bme280"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "169ac81b9123f316fde5b0e00175294dcdcdd800c1a6c92a4b58caf42a14cf1f"
+dependencies = [
+ "embedded-hal 1.0.0",
+ "maybe-async-cfg",
+]
+
 [[package]]
 name = "bstr"
 version = "1.12.0"
@@ -621,8 +631,11 @@ dependencies = [
 name = "firmware"
 version = "0.1.0"
 dependencies = [
+ "bme280",
  "embuild",
+ "esp-idf-hal",
  "esp-idf-svc",
+ "esp-idf-sys",
  "log",
 ]
 
@@ -890,6 +903,43 @@ version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
+[[package]]
+name = "manyhow"
+version = "0.11.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b33efb3ca6d3b07393750d4030418d594ab1139cee518f0dc88db70fec873587"
+dependencies = [
+ "manyhow-macros",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "syn 2.0.104",
+]
+
+[[package]]
+name = "manyhow-macros"
+version = "0.11.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46fce34d199b78b6e6073abf984c9cf5fd3e9330145a93ee0738a7443e371495"
+dependencies = [
+ "proc-macro-utils",
+ "proc-macro2",
+ "quote",
+]
+
+[[package]]
+name = "maybe-async-cfg"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8dbfaa67a76e2623580df07d6bb5e7956c0a4bae4b418314083a9c619bd66627"
+dependencies = [
+ "manyhow",
+ "proc-macro2",
+ "pulldown-cmark",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "memchr"
 version = "2.7.5"
@@ -1038,6 +1088,17 @@ dependencies = [
  "syn 2.0.104",
 ]
 
+[[package]]
+name = "proc-macro-utils"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eeaf08a13de400bc215877b5bdc088f241b12eb42f0a548d3390dc1c56bb7071"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "smallvec",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.95"
@@ -1047,6 +1108,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "pulldown-cmark"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "679341d22c78c6c649893cbd6c3278dcbe9fc4faa62fea3a9296ae2b50c14625"
+dependencies = [
+ "bitflags 2.9.1",
+ "memchr",
+ "unicase",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.40"
@@ -1214,6 +1286,12 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "smallvec"
+version = "1.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"
@@ -1365,6 +1443,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "unicase"
+version = "2.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75b844d17643ee918803943289730bec8aac480150456169e647ed0b576ba539"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.18"

firmware/Cargo.toml

@@ -25,6 +25,9 @@ experimental = ["esp-idf-svc/experimental"]
 [dependencies]
 log = "0.4"
 esp-idf-svc = "0.51"
+bme280 = "0.5.1"
+esp-idf-hal = "0.45.2" 
+esp-idf-sys = { version = "0.36.1", features = ["binstart"] }
 
 # --- Optional Embassy Integration ---
 # esp-idf-svc = { version = "0.51", features = ["critical-section", "embassy-time-driver", "embassy-sync"] }

firmware/src/main.rs

@@ -1,10 +1,72 @@
+use bme280::i2c::BME280;
+use esp_idf_hal::{
+    delay::Delay,
+    i2c::{I2cConfig, I2cDriver},
+    prelude::Peripherals,
+};
+
 fn main() {
-    // It is necessary to call this function once. Otherwise some patches to the runtime
+    //set up logger
-    // implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
+    esp_idf_sys::link_patches(); // Important!
-    esp_idf_svc::sys::link_patches();
-
-    // Bind the log crate to the ESP Logging facilities
     esp_idf_svc::log::EspLogger::initialize_default();
+    log::info!("Meow :3");
 
-    log::info!("Hello, world!");
+    // Initialize peripherals
+    let peripherals = Peripherals::take().unwrap();
+
+    // Define SCL and SDA pins
+    let sda = peripherals.pins.gpio21;
+    let scl = peripherals.pins.gpio22;
+
+    // Create I2C config
+    let config = I2cConfig::new().baudrate(100000.into());
+
+    log::info!("Initializing I2C bus…");
+
+    // Initialize I2C driver
+    let i2c_bus = match I2cDriver::new(
+        peripherals.i2c0, // or i2c1/i2c2 based on board
+        sda,
+        scl,
+        &config,
+    ) {
+        Ok(i2c_connection) => i2c_connection,
+        Err(err) => {
+            log::error!("Initializing I2C connection failed with {err}!");
+            panic!()
+        }
+    };
+
+    log::info!("I2C up!");
+    log::info!("Initializing bme280…");
+
+    let mut bme280 = BME280::new_primary(i2c_bus);
+
+    //initialize Sensor
+    match bme280.init(&mut Delay::new(100000)) {
+        Ok(_) => {}
+        Err(err) => {
+            log::error!("Error initializing bme280 sensor:");
+            match err {
+                bme280::Error::CompensationFailed => log::error!("Failed to compensate a raw measurement"),
+                bme280::Error::Bus(buserr) => log::error!("Bus error: {}", buserr),
+                bme280::Error::InvalidData => log::error!("Failed to pare sensor data!"),
+                bme280::Error::NoCalibrationData => log::error!("No calibration data is available (probably forgot to call or check BME280::init for failure)"),
+                bme280::Error::UnsupportedChip =>  log::error!("Chip ID doesn't match expected value"),
+                bme280::Error::Delay => log::error!("Delay error"),
+            }
+        }
+    }
+    log::info!("BME280 up!");
+
+    loop {
+        let measurement = bme280.measure(&mut Delay::new_default()).unwrap();
+
+        println!(
+            "1：temperature:{0}°C, pressure:{1}",
+            measurement.temperature, measurement.pressure
+        );
+
+        Delay::default().delay_ms(1000);
+    }
 }