158 lines
3.2 KiB
Rust
158 lines
3.2 KiB
Rust
#![no_std]
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#![cfg_attr(feature = "nightly", feature(type_alias_impl_trait))]
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// This mod MUST go first, so that the others see its macros.
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pub(crate) mod fmt;
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mod intrinsics;
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pub mod dma;
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pub mod gpio;
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pub mod interrupt;
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pub mod rom_data;
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pub mod rtc;
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pub mod spi;
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#[cfg(feature = "time-driver")]
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pub mod timer;
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pub mod uart;
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#[cfg(feature = "nightly")]
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pub mod usb;
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mod clocks;
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mod reset;
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// Reexports
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pub use embassy_cortex_m::executor;
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pub use embassy_cortex_m::interrupt::_export::interrupt;
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pub use embassy_hal_common::{into_ref, Peripheral, PeripheralRef};
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#[cfg(feature = "unstable-pac")]
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pub use rp2040_pac2 as pac;
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#[cfg(not(feature = "unstable-pac"))]
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pub(crate) use rp2040_pac2 as pac;
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embassy_hal_common::peripherals! {
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PIN_0,
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PIN_1,
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PIN_2,
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PIN_3,
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PIN_4,
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PIN_5,
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PIN_6,
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PIN_7,
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PIN_8,
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PIN_9,
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PIN_10,
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PIN_11,
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PIN_12,
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PIN_13,
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PIN_14,
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PIN_15,
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PIN_16,
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PIN_17,
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PIN_18,
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PIN_19,
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PIN_20,
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PIN_21,
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PIN_22,
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PIN_23,
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PIN_24,
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PIN_25,
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PIN_26,
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PIN_27,
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PIN_28,
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PIN_29,
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PIN_QSPI_SCLK,
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PIN_QSPI_SS,
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PIN_QSPI_SD0,
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PIN_QSPI_SD1,
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PIN_QSPI_SD2,
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PIN_QSPI_SD3,
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UART0,
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UART1,
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SPI0,
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SPI1,
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DMA_CH0,
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DMA_CH1,
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DMA_CH2,
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DMA_CH3,
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DMA_CH4,
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DMA_CH5,
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DMA_CH6,
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DMA_CH7,
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DMA_CH8,
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DMA_CH9,
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DMA_CH10,
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DMA_CH11,
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USB,
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RTC,
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}
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#[link_section = ".boot2"]
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#[used]
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static BOOT2: [u8; 256] = *include_bytes!("boot2.bin");
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pub mod config {
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#[non_exhaustive]
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pub struct Config {}
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impl Default for Config {
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fn default() -> Self {
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Self {}
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}
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}
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}
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pub fn init(_config: config::Config) -> Peripherals {
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// Do this first, so that it panics if user is calling `init` a second time
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// before doing anything important.
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let peripherals = Peripherals::take();
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unsafe {
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clocks::init();
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#[cfg(feature = "time-driver")]
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timer::init();
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dma::init();
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}
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peripherals
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}
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/// Extension trait for PAC regs, adding atomic xor/bitset/bitclear writes.
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trait RegExt<T: Copy> {
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unsafe fn write_xor<R>(&self, f: impl FnOnce(&mut T) -> R) -> R;
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unsafe fn write_set<R>(&self, f: impl FnOnce(&mut T) -> R) -> R;
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unsafe fn write_clear<R>(&self, f: impl FnOnce(&mut T) -> R) -> R;
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}
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impl<T: Default + Copy, A: pac::common::Write> RegExt<T> for pac::common::Reg<T, A> {
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unsafe fn write_xor<R>(&self, f: impl FnOnce(&mut T) -> R) -> R {
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let mut val = Default::default();
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let res = f(&mut val);
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let ptr = (self.ptr() as *mut u8).add(0x1000) as *mut T;
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ptr.write_volatile(val);
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res
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}
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unsafe fn write_set<R>(&self, f: impl FnOnce(&mut T) -> R) -> R {
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let mut val = Default::default();
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let res = f(&mut val);
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let ptr = (self.ptr() as *mut u8).add(0x2000) as *mut T;
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ptr.write_volatile(val);
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res
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}
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unsafe fn write_clear<R>(&self, f: impl FnOnce(&mut T) -> R) -> R {
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let mut val = Default::default();
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let res = f(&mut val);
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let ptr = (self.ptr() as *mut u8).add(0x3000) as *mut T;
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ptr.write_volatile(val);
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res
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}
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}
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