commit 1e771a162bf705ea4b58c6ff5d7c450c588cf463
Author: lukas-heiligenbrunner <lukas.heiligenbrunner@gmail.com>
Date:   Sun Dec 22 11:36:56 2024 +0100

    init

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..9fe739f
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,25 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# Choose a default "cargo run" tool (see README for more info)
+# - `probe-rs` provides flashing and defmt via a hardware debugger, and stack unwind on panic
+# - elf2uf2-rs loads firmware over USB when the rp2040 is in boot mode
+#runner = "probe-rs run --chip RP2040 --protocol swd"
+runner = "elf2uf2-rs -d -s"
+
+rustflags = [
+    "-C", "linker=flip-link",
+    "-C", "link-arg=--nmagic",
+    "-C", "link-arg=-Tlink.x",
+    "-C", "link-arg=-Tdefmt.x",
+
+    # Code-size optimizations.
+    #   trap unreachable can save a lot of space, but requires nightly compiler.
+    #   uncomment the next line if you wish to enable it
+    # "-Z", "trap-unreachable=no",
+    "-C", "no-vectorize-loops",
+]
+
+[build]
+target = "thumbv6m-none-eabi"
+
+[env]
+DEFMT_LOG = "debug"
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..5a8e571
--- /dev/null
+++ b/Cargo.lock
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+ "crc-any",
+]
+
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+ "bitfield 0.14.0",
+ "cortex-m",
+ "critical-section",
+ "embedded-dma",
+ "embedded-hal 0.2.7",
+ "embedded-hal 1.0.0",
+ "embedded-hal-async",
+ "embedded-hal-nb",
+ "embedded-io",
+ "frunk",
+ "fugit",
+ "itertools",
+ "nb 1.1.0",
+ "paste",
+ "pio",
+ "rand_core",
+ "rp2040-hal-macros",
+ "rp2040-pac",
+ "usb-device",
+ "vcell",
+ "void",
+]
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+ "syn 1.0.109",
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+]
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+ "unicode-ident",
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+dependencies = [
+ "heapless 0.8.0",
+ "portable-atomic",
+]
+
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+ "embedded-hal 0.2.7",
+ "embedded-io",
+ "nb 1.1.0",
+ "usb-device",
+]
+
+[[package]]
+name = "vcell"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+
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+
+[[package]]
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+checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
+dependencies = [
+ "vcell",
+]
+
+[[package]]
+name = "waveshare-rp2040-zero"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97c19a6cb0759cfd2d664ff4d8af8c4f42b39c6c69d4393fdbbc3d67f0084f76"
+dependencies = [
+ "cortex-m-rt",
+ "rp2040-boot2",
+ "rp2040-hal",
+]
+
+[[package]]
+name = "ws2812-pio"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b83a4e0ef584cbb06c6e3ee8421fa99556eef26e14fa72be77588675e874868"
+dependencies = [
+ "cortex-m",
+ "embedded-hal 0.2.7",
+ "fugit",
+ "nb 1.1.0",
+ "pio",
+ "rp2040-hal",
+ "smart-leds-trait",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..d23881e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,32 @@
+[package]
+name = "rp-pico"
+version = "0.9.0"
+authors = ["evan <evanmolder@gmail.com>", "The rp-rs Developers"]
+edition = "2018"
+homepage = "https://github.com/rp-rs/rp-hal-boards/tree/main/boards/rp-pico"
+description = "Board Support Package for the Raspberry Pi Pico"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rp-rs/rp-hal-boards.git"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cortex-m = "0.7"
+fugit = "0.3.7"
+cortex-m-rt = "0.7"
+rp2040-boot2 = { version = "0.3.0", optional = true }
+rp2040-hal = "0.10.2"
+waveshare-rp2040-zero = "0.8.0"
+cortex-m-rtic = "1"
+embedded-hal = "1.0.0"
+
+usb-device = "0.3.2"
+
+panic-halt = "1.0.0"
+defmt = "0.3"
+defmt-serial = "0.10.0"
+
+usbd-serial = "0.2.2"
+
+smart-leds = "0.3.0"
+ws2812-pio = "0.8.0"
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..d534cc3
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,31 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+}
diff --git a/memory.x b/memory.x
new file mode 100644
index 0000000..070eac7
--- /dev/null
+++ b/memory.x
@@ -0,0 +1,15 @@
+MEMORY {
+    BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100
+    FLASH : ORIGIN = 0x10000100, LENGTH = 2048K - 0x100
+    RAM   : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+EXTERN(BOOT2_FIRMWARE)
+
+SECTIONS {
+    /* ### Boot loader */
+    .boot2 ORIGIN(BOOT2) :
+    {
+        KEEP(*(.boot2));
+    } > BOOT2
+} INSERT BEFORE .text;
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..c899de3
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,195 @@
+#![no_std]
+#![no_main]
+
+use panic_halt as _;
+
+#[rtic::app(device = waveshare_rp2040_zero::hal::pac, peripherals = true)]
+mod app {
+    use core::iter::once;use fugit::MicrosDurationU32;
+    use rp2040_hal::Clock;
+    use rp2040_hal::gpio::{FunctionPio0, PullDown};
+    use rp2040_hal::gpio::bank0::Gpio16;
+    use rp2040_hal::pac::PIO0;
+    use rp2040_hal::pio::SM0;
+    use rp2040_hal::timer::CountDown;
+    use smart_leds::{brightness, SmartLedsWrite};
+    use usbd_serial::SerialPort;
+    use waveshare_rp2040_zero::{
+        hal::{self, clocks::init_clocks_and_plls, timer::Alarm, watchdog::Watchdog, Sio},
+        XOSC_CRYSTAL_FREQ,
+    };
+
+    use usb_device::{class_prelude::*, prelude::*};
+    use ws2812_pio::Ws2812;
+    use waveshare_rp2040_zero::hal::pio::PIOExt;
+
+    const SCAN_TIME_US: MicrosDurationU32 = MicrosDurationU32::millis(400);
+
+    #[shared]
+    struct Shared {
+        timer: hal::Timer,
+        alarm: hal::timer::Alarm0,
+        usb_dev: UsbDevice<'static, hal::usb::UsbBus>,
+        serial: SerialPort<'static, hal::usb::UsbBus>,
+        ws: Ws2812<PIO0, SM0, CountDown<'static>, hal::gpio::Pin<Gpio16, FunctionPio0, PullDown>>
+    }
+
+    #[local]
+    struct Local {}
+
+    #[init]
+    fn init(c: init::Context) -> (Shared, Local, init::Monotonics) {
+        // Soft-reset does not release the hardware spinlocks
+        // Release them now to avoid a deadlock after debug or watchdog reset
+        unsafe {
+            hal::sio::spinlock_reset();
+        }
+        let mut resets = c.device.RESETS;
+        let mut watchdog = Watchdog::new(c.device.WATCHDOG);
+        let clocks = init_clocks_and_plls(
+            XOSC_CRYSTAL_FREQ,
+            c.device.XOSC,
+            c.device.CLOCKS,
+            c.device.PLL_SYS,
+            c.device.PLL_USB,
+            &mut resets,
+            &mut watchdog,
+        )
+            .ok()
+            .unwrap();
+
+        let sio = Sio::new(c.device.SIO);
+        let pins = waveshare_rp2040_zero::Pins::new(
+            c.device.IO_BANK0,
+            c.device.PADS_BANK0,
+            sio.gpio_bank0,
+            &mut resets,
+        );
+
+        //let timer = Timer::new(c.device.TIMER, &mut c.device.RESETS, &clocks);
+        let dTIMER = c.device.TIMER;
+        let timer = cortex_m::singleton!(: hal::Timer = hal::Timer::new(dTIMER, &mut resets, &clocks)).unwrap();
+        let mut alarm = timer.alarm_0().unwrap();
+
+            let count_down: CountDown<'static> = timer.count_down();
+
+            let (mut pio, sm0, _, _, _) = c.device.PIO0.split(&mut resets);
+            let ws: Ws2812<PIO0, SM0, CountDown<'static>, hal::gpio::Pin<Gpio16, FunctionPio0, PullDown>> = Ws2812::new(
+                // The onboard NeoPixel is attached to GPIO pin #16 on the Waveshare RP2040-Zero.
+                pins.neopixel.into_function(),
+                &mut pio,
+                sm0,
+                clocks.peripheral_clock.freq(),
+                count_down,
+            );
+
+
+
+
+
+
+
+
+        // Set up the USB driver
+        let USBCTRL_REGS = c.device.USBCTRL_REGS;
+        let USBCTRL_DPRAM = c.device.USBCTRL_DPRAM;
+        let usb_clock = clocks.usb_clock;
+        let usb_bus = cortex_m::singleton!(
+            : UsbBusAllocator<hal::usb::UsbBus> = UsbBusAllocator::new(waveshare_rp2040_zero::hal::usb::UsbBus::new(
+            USBCTRL_REGS,
+            USBCTRL_DPRAM,
+            usb_clock,
+            true,
+            &mut resets,
+        ))).unwrap();
+
+        // Set up the USB Communications Class Device driver
+        let mut serial = SerialPort::new(usb_bus);
+
+        // Create a USB device with a fake VID and PID
+        let usb_dev = UsbDeviceBuilder::new(usb_bus, UsbVidPid(0x16c0, 0x27dd))
+            .strings(&[StringDescriptors::default()
+                .manufacturer("Fake company")
+                .product("Serial port")
+                .serial_number("TEST")])
+            .unwrap()
+            .device_class(2) // from: https://www.usb.org/defined-class-codes
+            .build();
+
+        let _ = serial.write(b"Hello, World!\r\n");
+
+
+
+        let _ = alarm.schedule(SCAN_TIME_US);
+        alarm.enable_interrupt();
+
+        (Shared { timer: *timer, alarm, usb_dev, serial, ws}, Local {}, init::Monotonics())
+    }
+
+    #[task(
+        binds = TIMER_IRQ_0,
+        priority = 1,
+        shared = [alarm, serial, ws],
+        local = [tog: bool = true],
+    )]
+    fn timer_irq(mut c: timer_irq::Context) {
+        if *c.local.tog {
+            c.shared.ws.lock(|ws| ws.write(brightness(once((255, 0, 0).into()), 32)).unwrap());
+            c.shared.serial.lock(|serial| _ = serial.write(b"High\r\n"));
+
+        } else {
+            c.shared.ws.lock(|ws| ws.write(brightness(once((0, 0, 0).into()), 32)).unwrap());
+            c.shared.serial.lock(|serial| _ = serial.write(b"LOW\r\n"));
+        }
+        *c.local.tog = !*c.local.tog;
+
+
+        let mut alarm = c.shared.alarm;
+        (alarm).lock(|a| {
+            a.clear_interrupt();
+            let _ = a.schedule(SCAN_TIME_US);
+        });
+    }
+
+    #[task(
+        binds = USBCTRL_IRQ,
+        priority = 1,
+        shared = [usb_dev, serial],
+    )]
+    fn usbctrl_irq(c: usbctrl_irq::Context) {
+        // Grab the global objects. This is OK as we only access them under interrupt.
+        let usb_dev = c.shared.usb_dev;
+        let serial = c.shared.serial;
+
+        (usb_dev, serial).lock(|usb_dev, serial| {
+            // Poll the USB driver with all of our supported USB Classes
+
+            if usb_dev.poll(&mut [serial]) {
+                let mut buf = [0u8; 64];
+                match serial.read(&mut buf) {
+                    Err(_e) => {
+                        // Do nothing
+                    }
+                    Ok(0) => {
+                        // Do nothing
+                    }
+                    Ok(count) => {
+                        // Convert to upper case
+                        buf.iter_mut().take(count).for_each(|b| {
+                            b.make_ascii_uppercase();
+                        });
+
+                        // Send back to the host
+                        let mut wr_ptr = &buf[..count];
+                        while !wr_ptr.is_empty() {
+                            let _ = serial.write(wr_ptr).map(|len| {
+                                wr_ptr = &wr_ptr[len..];
+                            });
+                        }
+                    }
+                }
+            }
+        });
+
+    }
+}
\ No newline at end of file