📟 pmme-device: Use embedded_graphics + ssd1306 crates to display logo on the OLED

pmme-device/rust-version/.cargo/config.toml

@@ -3,7 +3,8 @@ target = "xtensa-esp32-espidf"
 
 [target.xtensa-esp32-espidf]
 linker = "ldproxy"
-runner = "espflash flash --monitor"
+# runner = "espflash flash --monitor --speed 921600  # or even 1500000"
+runner = "espflash flash --monitor --baud 921600"
 rustflags = [ "--cfg",  "espidf_time64"]
 
 [unstable]

pmme-device/rust-version/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "rust-version"
+name = "pmme-device"
 version = "0.1.0"
 authors = ["Joseph Ferano <joseph@ferano.io>"]
 edition = "2021"
@@ -7,7 +7,7 @@ resolver = "2"
 rust-version = "1.77"
 
 [[bin]]
-name = "rust-version"
+name = "pmme-device"
 harness = false # do not use the built in cargo test harness -> resolve rust-analyzer errors
 
 [profile.release]
@@ -20,11 +20,15 @@ opt-level = "z"
 [features]
 default = []
 
-experimental = ["esp-idf-svc/experimental"]
+# experimental = ["esp-idf-svc/experimental"]
 
 [dependencies]
 log = "0.4"
 esp-idf-svc = { version = "0.51", features = ["critical-section", "embassy-time-driver", "embassy-sync"] }
+anyhow = "1.0.98"
+embedded-graphics = "0.8.1"
+ssd1306 = "0.10.0"
+# esp-idf-hal = { version = "0.45.2", features = ["std"] }
 
 [build-dependencies]
 embuild = "0.33"

pmme-device/rust-version/src/main.rs

@@ -1,13 +1,87 @@
-fn main() {
+use anyhow::{bail, Result, Context, anyhow};
+use esp_idf_svc::hal::delay::FreeRtos;
+use esp_idf_svc::hal::i2c::{I2cConfig, I2cDriver};
+use esp_idf_svc::hal::peripherals::Peripherals;
+use esp_idf_svc::hal::delay::BLOCK;
+use esp_idf_svc::hal::prelude::FromValueType;
+
+use embedded_graphics::{
+    mono_font::{
+        ascii::{FONT_10X20, FONT_5X8, FONT_6X12, FONT_9X15},
+        MonoTextStyle, MonoTextStyleBuilder,
+    },
+    image::{Image, ImageRaw},
+    pixelcolor::BinaryColor,
+    prelude::*,
+    text::Text,
+};
+use ssd1306::{I2CDisplayInterface, Ssd1306, size::*, rotation::*};
+use ssd1306::mode::DisplayConfig;
+
+use std::thread;
+use log::info;
+
+const SSD1306_ADDRESS: u8 = 0x3c;
+
+fn oled_task(mut i2c: I2cDriver) -> Result<()> {
+    info!("Staring OLED Task");
+
+    let interface = I2CDisplayInterface::new(i2c);
+    let mut display = Ssd1306::new(interface, DisplaySize128x64, DisplayRotation::Rotate0)
+        .into_buffered_graphics_mode();
+
+    display.init().unwrap();
+
+    let raw: ImageRaw<BinaryColor> = ImageRaw::new(include_bytes!("../rust.raw"), 64);
+    let im = Image::new(&raw, Point::new(32, 0));
+
+    im.draw(&mut display).unwrap();
+    display.flush().map_err(|e| anyhow!("Could not flush display! {:?}", e))?;
+
+    FreeRtos::delay_ms(3000);
+    loop {
+        display.clear(BinaryColor::Off).map_err(|e| anyhow!("Could not clear display! {:?}", e))?;
+        Text::new(
+            "PM 2.5: 4",
+            Point::new(20, 40),
+            MonoTextStyle::new(&FONT_10X20, BinaryColor::On),
+        ).draw(&mut display).map_err(|e| anyhow!("Could not draw text! {:?}", e))?;
+        display.flush().map_err(|e| anyhow!("Could not flush display! {:?}", e))?;
+        FreeRtos::delay_ms(500);
+    }
+}
+
+fn main() -> Result<()> {
     // It is necessary to call this function once. Otherwise some patches to the runtime
     // implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
     esp_idf_svc::sys::link_patches();
 
-    // Bind the log crate to the ESP Logging facilities
+    // Initialize NVS
+    // esp_idf_hal::nvs::EspDefaultNvsPartition::take()
+    //     .context("Could not take NVS partition")?;
     esp_idf_svc::log::EspLogger::initialize_default();
 
-    loop {
-        log::info!("Hello, world!");
-        std::thread::sleep(std::time::Duration::from_secs(1));
+    let peripherals = Peripherals::take()?;
+    let i2c = peripherals.i2c0;
+    let sda = peripherals.pins.gpio21;
+    let scl = peripherals.pins.gpio22;
+
+    let config = I2cConfig::new().baudrate(100.kHz().into());
+    let i2c = I2cDriver::new(i2c, sda, scl, &config)?;
+
+    let handles = vec! [
+        thread::spawn(move || {
+            if let Err(e) = oled_task(i2c) {
+                log::error!("OLED Task Error: {:?}", e);
             }
+        }),
+        // thread::spawn(move || {
+            
+        // }),
+    ];
+    for h in handles {
+        h.join().unwrap();
+    }
+
+    Ok(())
 }