Testing things out

Cargo.lock

@@ -29,6 +29,15 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bme280"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d52d85db2766df0fe57b7b2033c2311cf874b6f40fefa2195a345bbe16c9da5"
+dependencies = [
+ "embedded-hal",
+]
+
 [[package]]
 name = "buf_redux"
 version = "0.8.4"
@@ -51,6 +60,18 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfb24e866b15a1af2a1b663f10c6b6b8f397a84aadb828f12e5b289ec23a3a3c"
 
+[[package]]
+name = "cast"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
+
+[[package]]
+name = "cc"
+version = "1.0.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a20104e2335ce8a659d6dd92a51a767a0c062599c73b343fd152cb401e828c3d"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -86,6 +107,15 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "embedded-hal"
+version = "1.0.0-alpha.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93cc714edeae73aa1ff259af4498595360b2992e0e9c59801873ed198a7f2216"
+dependencies = [
+ "nb",
+]
+
 [[package]]
 name = "fastrand"
 version = "1.8.0"
@@ -173,6 +203,17 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "gpio-cdev"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "409296415b8abc7b47e5b77096faae14595c53724972da227434fc8f4b05ec8b"
+dependencies = [
+ "bitflags",
+ "libc",
+ "nix",
+]
+
 [[package]]
 name = "h2"
 version = "0.3.15"
@@ -281,6 +322,18 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "i2cdev"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8fe61341e9ce588ede54fd131bf0df63eed3c6e45fcc7fa0e548ea176f39358"
+dependencies = [
+ "bitflags",
+ "byteorder",
+ "libc",
+ "nix",
+]
+
 [[package]]
 name = "idna"
 version = "0.3.0"
@@ -310,6 +363,15 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "ioctl-rs"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7970510895cee30b3e9128319f2cefd4bde883a39f38baa279567ba3a7eb97d"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.5"
@@ -322,6 +384,24 @@ version = "0.2.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
 
+[[package]]
+name = "linux-embedded-hal"
+version = "0.4.0-alpha.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59f67fcef5d29b3ca6328cb283cb7e944e942f54d229709b71bb618f67af55be"
+dependencies = [
+ "cast",
+ "embedded-hal",
+ "gpio-cdev",
+ "i2cdev",
+ "nb",
+ "nix",
+ "serial-core",
+ "serial-unix",
+ "spidev",
+ "sysfs_gpio",
+]
+
 [[package]]
 name = "log"
 version = "0.4.17"
@@ -337,6 +417,15 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
+[[package]]
+name = "memoffset"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.16"
@@ -383,6 +472,25 @@ dependencies = [
  "twoway",
 ]
 
+[[package]]
+name = "nb"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
+
+[[package]]
+name = "nix"
+version = "0.23.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f3790c00a0150112de0f4cd161e3d7fc4b2d8a5542ffc35f099a2562aecb35c"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if",
+ "libc",
+ "memoffset",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.16.0"
@@ -561,6 +669,27 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serial-core"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f46209b345401737ae2125fe5b19a77acce90cd53e1658cda928e4fe9a64581"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "serial-unix"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f03fbca4c9d866e24a459cbca71283f545a37f8e3e002ad8c70593871453cab7"
+dependencies = [
+ "ioctl-rs",
+ "libc",
+ "serial-core",
+ "termios",
+]
+
 [[package]]
 name = "sha-1"
 version = "0.10.1"
@@ -602,6 +731,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "spidev"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c43e891adf1abc1e09b10f80c8d91959ee20ec28425c6dadac78844ba4c709f"
+dependencies = [
+ "bitflags",
+ "libc",
+ "nix",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.107"
@@ -613,6 +753,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "sysfs_gpio"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ef9c9bcbfeb596ce4da59b2c59736235f35dcd516f03958ea10834473224157"
+dependencies = [
+ "nix",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
@@ -627,6 +776,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "termios"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5d9cf598a6d7ce700a4e6a9199da127e6819a61e64b68609683cc9a01b5683a"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.38"
@@ -675,9 +833,21 @@ dependencies = [
  "mio",
  "pin-project-lite",
  "socket2",
+ "tokio-macros",
  "windows-sys",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tokio-stream"
 version = "0.1.11"
@@ -886,6 +1056,9 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 name = "weather_exporter"
 version = "0.1.0"
 dependencies = [
+ "bme280",
+ "linux-embedded-hal",
+ "tokio",
  "warp",
 ]
 

Cargo.toml

@@ -7,4 +7,7 @@ description = "A Prometheus exporter for weather data."
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+bme280 = "0.4.4"
+linux-embedded-hal = "0.4.0-alpha.2"
+tokio = { version = "1.23.0", features = ["macros", "rt"] }
 warp = "0.3.3"

src/main.rs

@@ -1,3 +1,23 @@
+use bme280;
+use linux_embedded_hal::{I2cdev, Delay};
+use std::thread;
+use std::time::Duration;
+
 fn main() {
-    println!("Hello, world!");
+
+    let loop_time = Duration::from_secs(5);
+
+    let i2c = I2cdev::new("/dev/i2c-1")
+        .expect("Could not open i2c bus");
+
+    let mut sensor = bme280::i2c::BME280::new_primary(i2c);
+
+    sensor.init(&mut Delay).expect("Could not initialize BME280 sensor");
+
+    loop {
+        let baro = sensor.measure(&mut Delay).expect("Could not perform measurement");
+        println!("H {}%, P {} PA, T {}°C", baro.humidity, baro.pressure, baro.temperature);
+        thread::sleep(loop_time);        
+    }
+
 }