Add rt feature to HALs, cfg out interrupt handling when not set.

embassy-rp/Cargo.toml

@@ -13,7 +13,8 @@ flavors = [
 ]
 
 [features]
-default = [ "rp-pac/rt" ]
+default = [ "rt" ]
+rt = [ "rp-pac/rt" ]
 
 defmt = ["dep:defmt", "embassy-usb-driver?/defmt", "embassy-hal-common/defmt"]
 

embassy-rp/src/dma.rs

@@ -12,6 +12,7 @@ use crate::interrupt::InterruptExt;
 use crate::pac::dma::vals;
 use crate::{interrupt, pac, peripherals};
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn DMA_IRQ_0() {
     let ints0 = pac::DMA.ints0().read().ints0();

embassy-rp/src/gpio.rs

@@ -142,6 +142,7 @@ pub(crate) unsafe fn init() {
     interrupt::IO_IRQ_BANK0.enable();
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn IO_IRQ_BANK0() {
     let cpu = SIO.cpuid().read() as usize;

embassy-rp/src/lib.rs

@@ -43,6 +43,7 @@ pub use rp_pac as pac;
 #[cfg(not(feature = "unstable-pac"))]
 pub(crate) use rp_pac as pac;
 
+#[cfg(feature = "rt")]
 pub use crate::pac::NVIC_PRIO_BITS;
 
 embassy_cortex_m::interrupt_mod!(

embassy-rp/src/multicore.rs

@@ -106,6 +106,7 @@ impl<const SIZE: usize> Stack<SIZE> {
     }
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 #[link_section = ".data.ram_func"]
 unsafe fn SIO_IRQ_PROC1() {
@@ -297,6 +298,7 @@ fn fifo_read() -> u32 {
 
 // Pop a value from inter-core FIFO, `wfe` until available
 #[inline(always)]
+#[allow(unused)]
 fn fifo_read_wfe() -> u32 {
     unsafe {
         let sio = pac::SIO;

embassy-rp/src/pio.rs

@@ -85,6 +85,7 @@ const RXNEMPTY_MASK: u32 = 1 << 0;
 const TXNFULL_MASK: u32 = 1 << 4;
 const SMIRQ_MASK: u32 = 1 << 8;
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn PIO0_IRQ_0() {
     use crate::pac;
@@ -97,6 +98,7 @@ unsafe fn PIO0_IRQ_0() {
     pac::PIO0.irqs(0).inte().write_clear(|m| m.0 = ints);
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn PIO1_IRQ_0() {
     use crate::pac;

embassy-rp/src/timer.rs

@@ -151,21 +151,25 @@ pub unsafe fn init() {
     interrupt::TIMER_IRQ_3.enable();
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn TIMER_IRQ_0() {
     DRIVER.check_alarm(0)
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn TIMER_IRQ_1() {
     DRIVER.check_alarm(1)
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn TIMER_IRQ_2() {
     DRIVER.check_alarm(2)
 }
 
+#[cfg(feature = "rt")]
 #[interrupt]
 unsafe fn TIMER_IRQ_3() {
     DRIVER.check_alarm(3)