Initial commit

examples/display_test/Cargo.toml

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+[package]
+name = "display_test"
+version = "0.1.0"
+edition = "2024"
+
+[[bin]]
+name = "display_test"
+harness = false # do not use the built in cargo test harness -> resolve rust-analyzer errors
+
+[profile.release]
+opt-level = "s"
+debug = true
+panic = "abort"
+
+[profile.dev]
+debug = true    # Symbols are nice and they don't increase the size on Flash
+opt-level = "z"
+panic = "abort"
+
+[dependencies]
+cardputer-bsc-nostd = { version = "0.1.0", path = "../.." }
+embedded-graphics = "0.8.1"
+esp-hal = {version = "=1.0.0-beta.1", features = ["esp32s3", "unstable"]}
+esp-println = { version = "0.14.0", features = ["esp32s3"] }
+esp-bootloader-esp-idf = "0.1.0"

examples/display_test/build.rs

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+fn main() {
+    linker_be_nice();
+    // make sure linkall.x is the last linker script (otherwise might cause problems with flip-link)
+    println!("cargo:rustc-link-arg=-Tlinkall.x");
+}
+
+fn linker_be_nice() {
+    let args: Vec<String> = std::env::args().collect();
+    if args.len() > 1 {
+        let kind = &args[1];
+        let what = &args[2];
+
+        match kind.as_str() {
+            "undefined-symbol" => match what.as_str() {
+                "_defmt_timestamp" => {
+                    eprintln!();
+                    eprintln!("💡 `defmt` not found - make sure `defmt.x` is added as a linker script and you have included `use defmt_rtt as _;`");
+                    eprintln!();
+                }
+                "_stack_start" => {
+                    eprintln!();
+                    eprintln!("💡 Is the linker script `linkall.x` missing?");
+                    eprintln!();
+                }
+                "esp_wifi_preempt_enable"
+                | "esp_wifi_preempt_yield_task"
+                | "esp_wifi_preempt_task_create" => {
+                    eprintln!();
+                    eprintln!("💡 `esp-wifi` has no scheduler enabled. Make sure you have the `builtin-scheduler` feature enabled, or that you provide an external scheduler.");
+                    eprintln!();
+                }
+                "embedded_test_linker_file_not_added_to_rustflags" => {
+                    eprintln!();
+                    eprintln!("💡 `embedded-test` not found - make sure `embedded-test.x` is added as a linker script for tests");
+                    eprintln!();
+                }
+                _ => (),
+            },
+            // we don't have anything helpful for "missing-lib" yet
+            _ => {
+                std::process::exit(1);
+            }
+        }
+
+        std::process::exit(0);
+    }
+
+    println!(
+        "cargo:rustc-link-arg=-Wl,--error-handling-script={}",
+        std::env::current_exe().unwrap().display()
+    );
+}

examples/display_test/src/main.rs

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+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+
+use cardputer_bsc_nostd::display::{DISPLAY_SIZE_HEIGHT, DISPLAY_SIZE_WIDTH};
+use embedded_graphics::pixelcolor::Rgb565;
+use esp_hal::{
+    ledc::{LowSpeed, channel::ChannelIFace, timer::TimerIFace},
+    main,
+};
+use esp_println::println;
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    println!("{info}");
+    esp_hal::system::software_reset()
+}
+
+esp_bootloader_esp_idf::esp_app_desc!();
+
+#[main]
+fn entrypoint() -> ! {
+    _main();
+    println!("main exited, entering infinite loop");
+    loop {}
+}
+
+fn _main() {
+    let peripherals = esp_hal::init(esp_hal::Config::default());
+    let mut display = cardputer_bsc_nostd::display::build(
+        peripherals.SPI2,
+        peripherals.GPIO36,
+        peripherals.GPIO35,
+        peripherals.GPIO37,
+        peripherals.GPIO34,
+        peripherals.GPIO33,
+    )
+    .unwrap();
+
+    let mut ledc = esp_hal::ledc::Ledc::new(peripherals.LEDC);
+    ledc.set_global_slow_clock(esp_hal::ledc::LSGlobalClkSource::APBClk);
+
+    let mut timer = ledc.timer::<LowSpeed>(esp_hal::ledc::timer::Number::Timer3);
+    timer.configure(esp_hal::ledc::timer::config::Config {
+        duty: esp_hal::ledc::timer::config::Duty::Duty8Bit,
+        clock_source: esp_hal::ledc::timer::LSClockSource::APBClk,
+        frequency: esp_hal::time::Rate::from_hz(256),
+    }).unwrap();
+
+    let mut backlight: esp_hal::ledc::channel::Channel<'_, _> =
+        ledc.channel(esp_hal::ledc::channel::Number::Channel7, peripherals.GPIO38);
+
+    backlight
+        .configure(esp_hal::ledc::channel::config::Config {
+            timer: &timer,
+            duty_pct: 100,
+            pin_config: esp_hal::ledc::channel::config::PinConfig::PushPull,
+        })
+        .unwrap();
+    
+    
+
+    display
+        .set_pixels(
+            0,
+            0,
+            DISPLAY_SIZE_WIDTH - 1,
+            DISPLAY_SIZE_HEIGHT - 1,
+            core::iter::repeat_n(
+                Rgb565::new(0, 0, 0),
+                DISPLAY_SIZE_WIDTH as usize * DISPLAY_SIZE_HEIGHT as usize,
+            ),
+        )
+        .unwrap();
+
+    display
+        .set_pixels(
+            20,
+            20,
+            DISPLAY_SIZE_WIDTH - 21,
+            DISPLAY_SIZE_HEIGHT - 21,
+            core::iter::repeat_n(
+                Rgb565::new(31, 0, 0),
+                DISPLAY_SIZE_WIDTH as usize * DISPLAY_SIZE_HEIGHT as usize,
+            ),
+        )
+        .unwrap();
+}