feat: embassy-lpc55 hal with gpio and pint driver

examples/lpc55s69/.cargo/config.toml

@@ -0,0 +1,8 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+runner = "probe-rs run --chip LPC55S69JBD100"
+
+[build]
+target = "thumbv8m.main-none-eabihf"
+
+[env]
+DEFMT_LOG = "debug"

examples/lpc55s69/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+edition = "2021"
+name = "embassy-nxp-lpc55s69-examples"
+version = "0.1.0"
+license = "MIT OR Apache-2.0"
+
+
+[dependencies]
+embassy-nxp = { version = "0.1.0", path = "../../embassy-nxp", features = ["rt"] }
+embassy-executor = { version = "0.6.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-sync = { version = "0.6.0", path = "../../embassy-sync", features = ["defmt"] }
+embassy-time = { version = "0.3.0", path = "../../embassy-time", features = ["defmt"] }
+panic-halt = "0.2.0"
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+cortex-m-rt = {version = "0.7.0"}
+defmt = "0.3"
+defmt-rtt = "0.4"
+panic-probe = { version = "0.3.2", features = ["print-defmt"] }
+panic-semihosting = "0.6.0"
+
+[profile.release]
+debug = 2

examples/lpc55s69/build.rs

@@ -0,0 +1,35 @@
+//! 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");
+
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}

examples/lpc55s69/memory.x

@@ -0,0 +1,28 @@
+/* File originally from lpc55-hal repo: https://github.com/lpc55/lpc55-hal/blob/main/memory.x */ 
+MEMORY
+{
+  FLASH : ORIGIN = 0x00000000, LENGTH = 512K
+
+  /* for use with standard link.x */
+  RAM : ORIGIN = 0x20000000, LENGTH = 256K
+
+  /* would be used with proper link.x */
+  /* needs changes to r0 (initialization code) */
+  /* SRAM0 : ORIGIN = 0x20000000, LENGTH = 64K */
+  /* SRAM1 : ORIGIN = 0x20010000, LENGTH = 64K */
+  /* SRAM2 : ORIGIN = 0x20020000, LENGTH = 64K */
+  /* SRAM3 : ORIGIN = 0x20030000, LENGTH = 64K */
+
+  /* CASPER SRAM regions */
+  /* SRAMX0: ORIGIN = 0x1400_0000, LENGTH = 4K /1* to 0x1400_0FFF *1/ */
+  /* SRAMX1: ORIGIN = 0x1400_4000, LENGTH = 4K /1* to 0x1400_4FFF *1/ */
+
+  /* USB1 SRAM regin */
+  /* USB1_SRAM : ORIGIN = 0x40100000, LENGTH = 16K */
+
+  /* To define our own USB RAM section in one regular */
+  /* RAM, probably easiest to shorten length of RAM */
+  /* above, and use this freed RAM section */
+
+}
+

examples/lpc55s69/src/bin/blinky_nop.rs

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+//! This example has been made with the LPCXpresso55S69 board in mind, which has a built-in LED on PIO1_6.
+
+#![no_std]
+#![no_main]
+
+use cortex_m::asm::nop;
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nxp::gpio::{Level, Output};
+use {defmt_rtt as _, panic_halt as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nxp::init(Default::default());
+
+    let mut led = Output::new(p.PIO1_6, Level::Low);
+
+    loop {
+        info!("led off!");
+        led.set_high();
+
+        for _ in 0..200_000 {
+            nop();
+        }
+
+        info!("led on!");
+        led.set_low();
+
+        for _ in 0..200_000 {
+            nop();
+        }
+    }
+}

examples/lpc55s69/src/bin/button_executor.rs

@@ -0,0 +1,25 @@
+//! This example has been made with the LPCXpresso55S69 board in mind, which has a built-in LED on
+//! PIO1_6 and a button (labeled "user") on PIO1_9.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nxp::gpio::{Input, Level, Output, Pull};
+use {defmt_rtt as _, panic_halt as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) -> ! {
+    let p = embassy_nxp::init(Default::default());
+
+    let mut led = Output::new(p.PIO1_6, Level::Low);
+    let mut button = Input::new(p.PIO1_9, Pull::Up);
+
+    info!("Entered main loop");
+    loop {
+        button.wait_for_rising_edge().await;
+        info!("Button pressed");
+        led.toggle();
+    }
+}