Move examples to a package of their own (#16)

* Move examples to a package of their own

* cargo +nightly fmt

* Add missing safety doc

* cargo clippy examples

* fmt again

---------

Co-authored-by: Felipe Balbi <[email protected]>

20 files changed, 826 insertions, 114 deletions

diff --git a/examples/.cargo/config.toml b/examples/.cargo/config.toml
new file mode 100644
index 000000000..ecb11be64
--- /dev/null
+++ b/examples/.cargo/config.toml
@@ -0,0 +1,17 @@
+[target.thumbv8m.main-none-eabihf]
+runner = 'probe-rs run --chip MCXA276 --preverify --verify'
+
+rustflags = [
+  "-C", "linker=flip-link",
+  "-C", "link-arg=-Tlink.x",
+  "-C", "link-arg=-Tdefmt.x",
+  # This is needed if your flash or ram addresses are not aligned to 0x10000 in memory.x
+  # See https://github.com/rust-embedded/cortex-m-quickstart/pull/95
+  "-C", "link-arg=--nmagic",
+]
+
+[build]
+target = "thumbv8m.main-none-eabihf" # Cortex-M33
+
+[env]
+DEFMT_LOG = "trace"
diff --git a/examples/.gitignore b/examples/.gitignore
new file mode 100644
index 000000000..2f7896d1d
--- /dev/null
+++ b/examples/.gitignore
@@ -0,0 +1 @@
+target/
diff --git a/examples/Cargo.lock b/examples/Cargo.lock
new file mode 100644
index 000000000..b774aff97
--- /dev/null
+++ b/examples/Cargo.lock
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+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
+[[package]]
+name = "syn"
+version = "2.0.110"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a99801b5bd34ede4cf3fc688c5919368fea4e4814a4664359503e6015b280aea"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
+
+[[package]]
+name = "vcell"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77439c1b53d2303b20d9459b1ade71a83c716e3f9c34f3228c00e6f185d6c002"
+
+[[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
+
+[[package]]
+name = "volatile-register"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
+dependencies = [
+ "vcell",
+]
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
new file mode 100644
index 000000000..6b100de42
--- /dev/null
+++ b/examples/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "embassy-mcxa-examples"
+version = "0.1.0"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+cortex-m = { version = "0.7", features = ["critical-section-single-core"] }
+cortex-m-rt = { version = "0.7", features = ["device"] }
+critical-section = "1.2.0"
+defmt = "1.0"
+defmt-rtt = "1.0"
+embassy-embedded-hal = "0.5.0"
+embassy-executor = { version = "0.9.0", features = ["arch-cortex-m", "executor-interrupt", "executor-thread"], default-features = false }
+embassy-mcxa = { path = "../", features = ["defmt", "rt", "unstable-pac"] }
+embassy-sync = "0.7.2"
+embassy-time = "0.5.0"
+embassy-time-driver = "0.2.1"
+embedded-io-async = "0.6.1"
+heapless = "0.9.2"
+panic-probe = { version = "1.0", features = ["print-defmt"] }
diff --git a/examples/build.rs b/examples/build.rs
new file mode 100644
index 000000000..f076bba9f
--- /dev/null
+++ b/examples/build.rs
@@ -0,0 +1,20 @@
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+
+    // Generate memory.x - put "FLASH" at start of RAM, RAM after "FLASH"
+    // cortex-m-rt expects FLASH for code, RAM for data/bss/stack
+    // Both are in RAM, but separated to satisfy cortex-m-rt's expectations
+    // MCXA256 has 128KB RAM total
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+
+    println!("cargo:rustc-link-search={}", out.display());
+    println!("cargo:rerun-if-changed=memory.x");
+}
diff --git a/examples/memory.x b/examples/memory.x
new file mode 100644
index 000000000..f4263a412
--- /dev/null
+++ b/examples/memory.x
@@ -0,0 +1,5 @@
+MEMORY
+{
+    FLASH : ORIGIN = 0x20000000, LENGTH = 64K
+    RAM   : ORIGIN = 0x20010000, LENGTH = 64K
+}
diff --git a/examples/adc_interrupt.rs b/examples/src/bin/adc_interrupt.rs
index dc82cfd30..e174a5272 100644
--- a/examples/adc_interrupt.rs
+++ b/examples/src/bin/adc_interrupt.rs
@@ -2,17 +2,14 @@
 #![no_main]
 
 use embassy_executor::Spawner;
+use embassy_mcxa_examples::{init_adc, init_uart2};
 use hal::adc::{LpadcConfig, TriggerPriorityPolicy};
-use hal::uart;
-use mcxa_pac::adc1::cfg::{Pwrsel, Refsel};
-use mcxa_pac::adc1::cmdl1::{Adch, Mode};
-use mcxa_pac::adc1::ctrl::CalAvgs;
-use mcxa_pac::adc1::tctrl::Tcmd;
-use {cortex_m, embassy_mcxa276 as hal};
-mod common;
-
-use hal::{bind_interrupts, InterruptExt};
-use {defmt_rtt as _, panic_probe as _};
+use hal::pac::adc1::cfg::{Pwrsel, Refsel};
+use hal::pac::adc1::cmdl1::{Adch, Mode};
+use hal::pac::adc1::ctrl::CalAvgs;
+use hal::pac::adc1::tctrl::Tcmd;
+use hal::{bind_interrupts, uart, InterruptExt};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
     ADC1 => hal::adc::AdcHandler;
@@ -27,7 +24,7 @@ async fn main(_spawner: Spawner) {
     let p = hal::init(hal::config::Config::default());
 
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
 
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
@@ -36,7 +33,7 @@ async fn main(_spawner: Spawner) {
     uart.write_str_blocking("\r\n=== ADC interrupt Example ===\r\n");
 
     unsafe {
-        common::init_adc(hal::pac());
+        init_adc(hal::pac());
     }
 
     let adc_config = LpadcConfig {
diff --git a/examples/adc_polling.rs b/examples/src/bin/adc_polling.rs
index 4b5f9422d..741551d49 100644
--- a/examples/adc_polling.rs
+++ b/examples/src/bin/adc_polling.rs
@@ -1,21 +1,18 @@
 #![no_std]
 #![no_main]
 
+use core::fmt::Write;
+
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
+use embassy_mcxa_examples::{init_adc, init_uart2};
 use hal::adc::{ConvResult, LpadcConfig, TriggerPriorityPolicy};
+use hal::pac::adc1::cfg::{Pwrsel, Refsel};
+use hal::pac::adc1::cmdl1::{Adch, Mode};
+use hal::pac::adc1::ctrl::CalAvgs;
+use hal::pac::adc1::tctrl::Tcmd;
 use hal::uart;
-use mcxa_pac::adc1::cfg::{Pwrsel, Refsel};
-use mcxa_pac::adc1::cmdl1::{Adch, Mode};
-use mcxa_pac::adc1::ctrl::CalAvgs;
-use mcxa_pac::adc1::tctrl::Tcmd;
-
-mod common;
-
-use core::fmt::Write;
-
 use heapless::String;
-use {defmt_rtt as _, panic_probe as _};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 const G_LPADC_RESULT_SHIFT: u32 = 0;
 
@@ -24,7 +21,7 @@ async fn main(_spawner: Spawner) {
     let p = hal::init(hal::config::Config::default());
 
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
 
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
@@ -33,7 +30,7 @@ async fn main(_spawner: Spawner) {
     uart.write_str_blocking("\r\n=== ADC polling Example ===\r\n");
 
     unsafe {
-        common::init_adc(hal::pac());
+        init_adc(hal::pac());
     }
 
     let adc_config = LpadcConfig {
diff --git a/examples/blink.rs b/examples/src/bin/blink.rs
index 564353d5c..d8a57c546 100644
--- a/examples/blink.rs
+++ b/examples/src/bin/blink.rs
@@ -2,15 +2,13 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
+use embassy_mcxa as hal;
+use embassy_mcxa::bind_interrupts;
+use embassy_mcxa_examples::{init_led, init_ostimer0};
 use embassy_time::{Duration, Timer};
 use hal::gpio::pins::PIO3_18;
 use hal::gpio::{Level, Output};
 
-mod common;
-
-use embassy_mcxa276::bind_interrupts;
-
 // Bind only OS_EVENT for timer interrupts
 bind_interrupts!(struct Irqs {
     OS_EVENT => hal::ostimer::time_driver::OsEventHandler;
@@ -24,13 +22,9 @@ static KEEP_OS_EVENT: unsafe extern "C" fn() = OS_EVENT;
 async fn main(_spawner: Spawner) {
     let _p = hal::init(hal::config::Config::default());
 
-    // Board-style init: enable LED GPIO/PORT clocks used by blink
-    unsafe {
-        common::init_led(hal::pac());
-    }
-    // Initialize OSTIMER for async timing
     unsafe {
-        common::init_ostimer0(hal::pac());
+        init_led(hal::pac());
+        init_ostimer0(hal::pac());
     }
 
     // Initialize embassy-time global driver backed by OSTIMER0
diff --git a/examples/hello.rs b/examples/src/bin/hello.rs
index e39adaced..5c4336d50 100644
--- a/examples/hello.rs
+++ b/examples/src/bin/hello.rs
@@ -2,12 +2,9 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
+use embassy_mcxa_examples::init_uart2;
 use hal::uart;
-
-mod common;
-
-use {defmt_rtt as _, panic_probe as _};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 /// Simple helper to write a byte as hex to UART
 fn write_hex_byte(uart: &hal::uart::Uart<hal::uart::Lpuart2>, byte: u8) {
@@ -24,7 +21,7 @@ async fn main(_spawner: Spawner) {
 
     // Board-level init for UART2 clocks and pins.
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
 
     // Get UART source frequency from clock configuration
@@ -74,7 +71,7 @@ async fn main(_spawner: Spawner) {
                     } else {
                         uart.write_str_blocking("Invalid number for hex command\r\n");
                     }
-                } else if command.len() > 0 {
+                } else if !command.is_empty() {
                     uart.write_str_blocking("Unknown command: ");
                     uart.write_str_blocking(core::str::from_utf8(command).unwrap_or(""));
                     uart.write_str_blocking("\r\n");
@@ -103,7 +100,7 @@ async fn main(_spawner: Spawner) {
 fn parse_u8(bytes: &[u8]) -> Result<u8, ()> {
     let mut result = 0u8;
     for &b in bytes {
-        if b >= b'0' && b <= b'9' {
+        if b.is_ascii_digit() {
             result = result.checked_mul(10).ok_or(())?;
             result = result.checked_add(b - b'0').ok_or(())?;
         } else {
diff --git a/examples/lpuart_buffered.rs b/examples/src/bin/lpuart_buffered.rs
index 35d311143..480d8e1f7 100644
--- a/examples/lpuart_buffered.rs
+++ b/examples/src/bin/lpuart_buffered.rs
@@ -2,14 +2,13 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
-use embassy_mcxa276::interrupt::typelevel::Handler;
-use embassy_mcxa276::lpuart::buffered::BufferedLpuart;
-use embassy_mcxa276::{bind_interrupts, lpuart};
+use embassy_mcxa as hal;
+use embassy_mcxa::interrupt::typelevel::Handler;
+use embassy_mcxa::lpuart::buffered::BufferedLpuart;
+use embassy_mcxa::{bind_interrupts, lpuart};
+use embassy_mcxa_examples::{init_ostimer0, init_uart2};
 use embedded_io_async::{Read, Write};
 
-mod common;
-
 // Bind OS_EVENT for timers plus LPUART2 IRQ for the buffered driver
 bind_interrupts!(struct Irqs {
     LPUART2 => lpuart::buffered::BufferedInterruptHandler::<lpuart::lib::peripherals::LPUART2>;
@@ -26,15 +25,15 @@ async fn main(_spawner: Spawner) {
     let p2 = lpuart::lib::init();
 
     unsafe {
-        hal::interrupt::install_irq_handler(mcxa_pac::Interrupt::LPUART2, lpuart2_handler);
+        hal::interrupt::install_irq_handler(hal::pac::Interrupt::LPUART2, lpuart2_handler);
     }
 
     // Configure NVIC for LPUART2
     hal::interrupt::LPUART2.configure_for_uart(hal::interrupt::Priority::P3);
 
     unsafe {
-        common::init_uart2(hal::pac());
-        common::init_ostimer0(hal::pac());
+        init_uart2(hal::pac());
+        init_ostimer0(hal::pac());
     }
 
     // UART configuration (enable both TX and RX)
diff --git a/examples/lpuart_polling.rs b/examples/src/bin/lpuart_polling.rs
index 067c7eb53..215714569 100644
--- a/examples/lpuart_polling.rs
+++ b/examples/src/bin/lpuart_polling.rs
@@ -2,11 +2,9 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use {defmt_rtt as _, embassy_mcxa276 as hal, panic_probe as _};
-
-use crate::hal::lpuart::{lib, Config, Lpuart};
-
-mod common;
+use embassy_mcxa_examples::init_uart2;
+use hal::lpuart::{lib, Config, Lpuart};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
@@ -17,7 +15,7 @@ async fn main(_spawner: Spawner) {
 
     // Board-level init for UART2 clocks and pins.
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
 
     // Create UART configuration
diff --git a/examples/ostimer_alarm.rs b/examples/src/bin/ostimer_alarm.rs
index 78ca4bbc5..953f98c01 100644
--- a/examples/ostimer_alarm.rs
+++ b/examples/src/bin/ostimer_alarm.rs
@@ -4,13 +4,10 @@
 use core::sync::atomic::{AtomicBool, Ordering};
 
 use embassy_executor::Spawner;
+use embassy_mcxa::bind_interrupts;
+use embassy_mcxa_examples::{init_ostimer0, init_uart2};
 use hal::uart;
-use {cortex_m, embassy_mcxa276 as hal};
-
-mod common;
-
-use embassy_mcxa276::bind_interrupts;
-use {defmt_rtt as _, panic_probe as _};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 // Bind only OS_EVENT, and retain the symbol explicitly so it can't be GC'ed.
 bind_interrupts!(struct Irqs {
@@ -35,10 +32,8 @@ async fn main(_spawner: Spawner) {
 
     // Enable/clock OSTIMER0 and UART2 before touching their registers
     unsafe {
-        common::init_ostimer0(hal::pac());
-    }
-    unsafe {
-        common::init_uart2(hal::pac());
+        init_ostimer0(hal::pac());
+        init_uart2(hal::pac());
     }
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
     let uart = uart::Uart::<uart::Lpuart2>::new(p.LPUART2, uart::Config::new(src));
diff --git a/examples/ostimer_async.rs b/examples/src/bin/ostimer_async.rs
index 27e14e022..34862b61f 100644
--- a/examples/ostimer_async.rs
+++ b/examples/src/bin/ostimer_async.rs
@@ -2,14 +2,11 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
-use hal::uart;
-
-mod common;
-
-use embassy_mcxa276::bind_interrupts;
+use embassy_mcxa::bind_interrupts;
+use embassy_mcxa_examples::{init_ostimer0, init_uart2};
 use embassy_time::{Duration, Timer};
-use {defmt_rtt as _, panic_probe as _};
+use hal::uart;
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 // Bind only OS_EVENT, and retain the symbol explicitly so it can’t be GC’ed.
 bind_interrupts!(struct Irqs {
@@ -26,10 +23,8 @@ async fn main(_spawner: Spawner) {
 
     // Enable/clock OSTIMER0 and UART2 before touching their registers
     unsafe {
-        common::init_ostimer0(hal::pac());
-    }
-    unsafe {
-        common::init_uart2(hal::pac());
+        init_ostimer0(hal::pac());
+        init_uart2(hal::pac());
     }
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
     let uart = uart::Uart::<uart::Lpuart2>::new(_p.LPUART2, uart::Config::new(src));
diff --git a/examples/ostimer_counter.rs b/examples/src/bin/ostimer_counter.rs
index e95140a88..20044760a 100644
--- a/examples/ostimer_counter.rs
+++ b/examples/src/bin/ostimer_counter.rs
@@ -7,11 +7,10 @@
 #![no_main]
 
 use embassy_executor::Spawner;
+use embassy_mcxa_examples::{init_ostimer0, init_uart2};
 use embassy_time::{Duration, Timer};
 use hal::bind_interrupts;
-use {defmt_rtt as _, embassy_mcxa276 as hal, panic_probe as _};
-
-mod common;
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
     OS_EVENT => hal::ostimer::time_driver::OsEventHandler;
@@ -23,10 +22,8 @@ async fn main(_spawner: Spawner) {
 
     // Enable/clock OSTIMER0 and UART2 before touching their registers
     unsafe {
-        common::init_ostimer0(hal::pac());
-    }
-    unsafe {
-        common::init_uart2(hal::pac());
+        init_ostimer0(hal::pac());
+        init_uart2(hal::pac());
     }
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
     let mut uart = hal::uart::Uart::<hal::uart::Lpuart2>::new(p.LPUART2, hal::uart::Config::new(src));
diff --git a/examples/ostimer_race_test.rs b/examples/src/bin/ostimer_race_test.rs
index 368a3e52f..720a058d5 100644
--- a/examples/ostimer_race_test.rs
+++ b/examples/src/bin/ostimer_race_test.rs
@@ -12,11 +12,10 @@
 use core::sync::atomic::{AtomicU32, Ordering};
 
 use embassy_executor::Spawner;
+use embassy_mcxa_examples::{init_ostimer0, init_uart2};
 use embassy_time::{Duration, Timer};
 use hal::bind_interrupts;
-use {defmt_rtt as _, embassy_mcxa276 as hal, panic_probe as _};
-
-mod common;
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
     OS_EVENT => hal::ostimer::time_driver::OsEventHandler;
@@ -73,10 +72,8 @@ async fn main(_spawner: Spawner) {
 
     // Enable/clock OSTIMER0 and UART2 before touching their registers
     unsafe {
-        common::init_ostimer0(hal::pac());
-    }
-    unsafe {
-        common::init_uart2(hal::pac());
+        init_ostimer0(hal::pac());
+        init_uart2(hal::pac());
     }
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
     let mut uart = hal::uart::Uart::<hal::uart::Lpuart2>::new(p.LPUART2, hal::uart::Config::new(src));
@@ -267,7 +264,7 @@ async fn test_concurrent_operations(
 async fn test_reset_during_operation(
     ostimer: &hal::ostimer::Ostimer<'_, hal::ostimer::Ostimer0>,
     uart: &mut hal::uart::Uart<hal::uart::Lpuart2>,
-    peripherals: &mcxa_pac::Peripherals,
+    peripherals: &hal::pac::Peripherals,
 ) {
     let initial_counter = ostimer.now();
 
diff --git a/examples/rtc_alarm.rs b/examples/src/bin/rtc_alarm.rs
index c27fd4c55..dc07b5757 100644
--- a/examples/rtc_alarm.rs
+++ b/examples/src/bin/rtc_alarm.rs
@@ -2,15 +2,14 @@
 #![no_main]
 
 use embassy_executor::Spawner;
+use embassy_mcxa as hal;
+use embassy_mcxa_examples::init_uart2;
 use hal::rtc::{RtcDateTime, RtcInterruptEnable};
 use hal::{uart, InterruptExt};
-use {cortex_m, embassy_mcxa276 as hal};
-
-mod common;
 
 type MyRtc = hal::rtc::Rtc<hal::rtc::Rtc0>;
 
-use embassy_mcxa276::bind_interrupts;
+use embassy_mcxa::bind_interrupts;
 use {defmt_rtt as _, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
@@ -26,7 +25,7 @@ async fn main(_spawner: Spawner) {
     let p = hal::init(hal::config::Config::default());
 
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
 
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
@@ -82,6 +81,4 @@ async fn main(_spawner: Spawner) {
     }
 
     uart.write_str_blocking("Example complete - Test PASSED!\r\n");
-
-    loop {}
 }
diff --git a/examples/uart_interrupt.rs b/examples/src/bin/uart_interrupt.rs
index bd734f859..100588727 100644
--- a/examples/uart_interrupt.rs
+++ b/examples/src/bin/uart_interrupt.rs
@@ -2,14 +2,11 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_mcxa276 as hal;
+use embassy_mcxa::bind_interrupts;
+use embassy_mcxa_examples::init_uart2;
 use hal::interrupt::typelevel::Handler;
 use hal::uart;
-
-mod common;
-
-use embassy_mcxa276::bind_interrupts;
-use {defmt_rtt as _, panic_probe as _};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
 
 // Bind LPUART2 interrupt to our handler
 bind_interrupts!(struct Irqs {
@@ -31,7 +28,7 @@ async fn main(_spawner: Spawner) {
 
     // Enable/clock UART2 before touching its registers
     unsafe {
-        common::init_uart2(hal::pac());
+        init_uart2(hal::pac());
     }
     let src = unsafe { hal::clocks::uart2_src_hz(hal::pac()) };
     let uart = uart::Uart::<uart::Lpuart2>::new(_p.LPUART2, uart::Config::new(src));
diff --git a/examples/common/mod.rs b/examples/src/common/mod.rs
index 8c52c8e86..8cb4590f8 100644
--- a/examples/common/mod.rs
+++ b/examples/src/common/mod.rs
@@ -2,12 +2,12 @@
 //! These live with the examples so the HAL stays generic.
 
 use hal::{clocks, pins, reset};
-use {embassy_mcxa276 as hal, panic_probe as _};
+use {embassy_mcxa as hal, panic_probe as _};
 
 /// Initialize clocks and pin muxing for UART2 debug console.
 /// Safe to call multiple times; writes are idempotent for our use.
 #[allow(dead_code)]
-pub unsafe fn init_uart2(p: &mcxa_pac::Peripherals) {
+pub unsafe fn init_uart2(p: &hal::pac::Peripherals) {
     clocks::ensure_frolf_running(p);
     clocks::enable_uart2_port2(p);
     reset::release_reset_port2(p);
@@ -18,7 +18,7 @@ pub unsafe fn init_uart2(p: &mcxa_pac::Peripherals) {
 
 /// Initialize clocks for the LED GPIO/PORT used by the blink example.
 #[allow(dead_code)]
-pub unsafe fn init_led(p: &mcxa_pac::Peripherals) {
+pub unsafe fn init_led(p: &hal::pac::Peripherals) {
     clocks::enable_led_port(p);
     reset::release_reset_gpio3(p);
     reset::release_reset_port3(p);
@@ -26,7 +26,7 @@ pub unsafe fn init_led(p: &mcxa_pac::Peripherals) {
 
 /// Initialize clocks for OSTIMER0 (1 MHz source).
 #[allow(dead_code)]
-pub unsafe fn init_ostimer0(p: &mcxa_pac::Peripherals) {
+pub unsafe fn init_ostimer0(p: &hal::pac::Peripherals) {
     clocks::ensure_frolf_running(p);
     clocks::enable_ostimer0(p);
     reset::release_reset_ostimer0(p);
@@ -35,7 +35,7 @@ pub unsafe fn init_ostimer0(p: &mcxa_pac::Peripherals) {
 
 /// Initialize clocks and pin muxing for ADC.
 #[allow(dead_code)]
-pub unsafe fn init_adc(p: &mcxa_pac::Peripherals) {
+pub unsafe fn init_adc(p: &hal::pac::Peripherals) {
     clocks::ensure_frolf_running(p);
     clocks::enable_adc(p);
     reset::release_reset_port1(p);
diff --git a/examples/src/lib.rs b/examples/src/lib.rs
new file mode 100644
index 000000000..cf4194559
--- /dev/null
+++ b/examples/src/lib.rs
@@ -0,0 +1,63 @@
+#![no_std]
+
+//! Shared board-specific helpers for the FRDM-MCXA276 examples.
+//! These live with the examples so the HAL stays generic.
+
+use hal::{clocks, pins, reset};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
+
+/// Initialize clocks and pin muxing for UART2 debug console.
+/// Safe to call multiple times; writes are idempotent for our use.
+///
+/// # Safety
+///
+/// Called only once to initialize the peripheral
+#[allow(dead_code)]
+pub unsafe fn init_uart2(p: &hal::pac::Peripherals) {
+    clocks::ensure_frolf_running(p);
+    clocks::enable_uart2_port2(p);
+    reset::release_reset_port2(p);
+    reset::release_reset_lpuart2(p);
+    pins::configure_uart2_pins_port2();
+    clocks::select_uart2_clock(p);
+}
+
+/// Initialize clocks for the LED GPIO/PORT used by the blink example.
+///
+/// # Safety
+///
+/// Called only once to initialize the peripheral
+#[allow(dead_code)]
+pub unsafe fn init_led(p: &hal::pac::Peripherals) {
+    clocks::enable_led_port(p);
+    reset::release_reset_gpio3(p);
+    reset::release_reset_port3(p);
+}
+
+/// Initialize clocks for OSTIMER0 (1 MHz source).
+///
+/// # Safety
+///
+/// Called only once to initialize the peripheral
+#[allow(dead_code)]
+pub unsafe fn init_ostimer0(p: &hal::pac::Peripherals) {
+    clocks::ensure_frolf_running(p);
+    clocks::enable_ostimer0(p);
+    reset::release_reset_ostimer0(p);
+    clocks::select_ostimer0_clock_1m(p);
+}
+
+/// Initialize clocks and pin muxing for ADC.
+///
+/// # Safety
+///
+/// Called only once to initialize the peripheral
+#[allow(dead_code)]
+pub unsafe fn init_adc(p: &hal::pac::Peripherals) {
+    clocks::ensure_frolf_running(p);
+    clocks::enable_adc(p);
+    reset::release_reset_port1(p);
+    reset::release_reset_adc1(p);
+    pins::configure_adc_pins();
+    clocks::select_adc_clock(p);
+}