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#![macro_use]
use core::marker::PhantomData;
use crate::dma::NoDma;
use crate::interrupt;
#[cfg_attr(i2c_v1, path = "v1.rs")]
#[cfg_attr(i2c_v2, path = "v2.rs")]
mod _version;
pub use _version::*;
use embassy_sync::waitqueue::AtomicWaker;
use crate::peripherals;
#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error {
Bus,
Arbitration,
Nack,
Timeout,
Crc,
Overrun,
ZeroLengthTransfer,
}
pub(crate) mod sealed {
use super::*;
pub struct State {
#[allow(unused)]
pub waker: AtomicWaker,
}
impl State {
pub const fn new() -> Self {
Self {
waker: AtomicWaker::new(),
}
}
}
pub trait Instance: crate::rcc::RccPeripheral {
fn regs() -> crate::pac::i2c::I2c;
fn state() -> &'static State;
}
}
pub trait Instance: sealed::Instance + 'static {
type EventInterrupt: interrupt::typelevel::Interrupt;
type ErrorInterrupt: interrupt::typelevel::Interrupt;
}
pin_trait!(SclPin, Instance);
pin_trait!(SdaPin, Instance);
dma_trait!(RxDma, Instance);
dma_trait!(TxDma, Instance);
/// Interrupt handler.
pub struct EventInterruptHandler<T: Instance> {
_phantom: PhantomData<T>,
}
impl<T: Instance> interrupt::typelevel::Handler<T::EventInterrupt> for EventInterruptHandler<T> {
unsafe fn on_interrupt() {
_version::on_interrupt::<T>()
}
}
pub struct ErrorInterruptHandler<T: Instance> {
_phantom: PhantomData<T>,
}
impl<T: Instance> interrupt::typelevel::Handler<T::ErrorInterrupt> for ErrorInterruptHandler<T> {
unsafe fn on_interrupt() {
_version::on_interrupt::<T>()
}
}
foreach_peripheral!(
(i2c, $inst:ident) => {
impl sealed::Instance for peripherals::$inst {
fn regs() -> crate::pac::i2c::I2c {
crate::pac::$inst
}
fn state() -> &'static sealed::State {
static STATE: sealed::State = sealed::State::new();
&STATE
}
}
impl Instance for peripherals::$inst {
type EventInterrupt = crate::_generated::peripheral_interrupts::$inst::EV;
type ErrorInterrupt = crate::_generated::peripheral_interrupts::$inst::ER;
}
};
);
impl<'d, T: Instance> embedded_hal_02::blocking::i2c::Read for I2c<'d, T> {
type Error = Error;
fn read(&mut self, address: u8, buffer: &mut [u8]) -> Result<(), Self::Error> {
self.blocking_read(address, buffer)
}
}
impl<'d, T: Instance> embedded_hal_02::blocking::i2c::Write for I2c<'d, T> {
type Error = Error;
fn write(&mut self, address: u8, write: &[u8]) -> Result<(), Self::Error> {
self.blocking_write(address, write)
}
}
impl<'d, T: Instance> embedded_hal_02::blocking::i2c::WriteRead for I2c<'d, T> {
type Error = Error;
fn write_read(&mut self, address: u8, write: &[u8], read: &mut [u8]) -> Result<(), Self::Error> {
self.blocking_write_read(address, write, read)
}
}
impl embedded_hal_1::i2c::Error for Error {
fn kind(&self) -> embedded_hal_1::i2c::ErrorKind {
match *self {
Self::Bus => embedded_hal_1::i2c::ErrorKind::Bus,
Self::Arbitration => embedded_hal_1::i2c::ErrorKind::ArbitrationLoss,
Self::Nack => {
embedded_hal_1::i2c::ErrorKind::NoAcknowledge(embedded_hal_1::i2c::NoAcknowledgeSource::Unknown)
}
Self::Timeout => embedded_hal_1::i2c::ErrorKind::Other,
Self::Crc => embedded_hal_1::i2c::ErrorKind::Other,
Self::Overrun => embedded_hal_1::i2c::ErrorKind::Overrun,
Self::ZeroLengthTransfer => embedded_hal_1::i2c::ErrorKind::Other,
}
}
}
impl<'d, T: Instance, TXDMA, RXDMA> embedded_hal_1::i2c::ErrorType for I2c<'d, T, TXDMA, RXDMA> {
type Error = Error;
}
impl<'d, T: Instance> embedded_hal_1::i2c::I2c for I2c<'d, T, NoDma, NoDma> {
fn read(&mut self, address: u8, read: &mut [u8]) -> Result<(), Self::Error> {
self.blocking_read(address, read)
}
fn write(&mut self, address: u8, write: &[u8]) -> Result<(), Self::Error> {
self.blocking_write(address, write)
}
fn write_read(&mut self, address: u8, write: &[u8], read: &mut [u8]) -> Result<(), Self::Error> {
self.blocking_write_read(address, write, read)
}
fn transaction(
&mut self,
_address: u8,
_operations: &mut [embedded_hal_1::i2c::Operation<'_>],
) -> Result<(), Self::Error> {
todo!();
}
}
impl<'d, T: Instance, TXDMA: TxDma<T>, RXDMA: RxDma<T>> embedded_hal_async::i2c::I2c for I2c<'d, T, TXDMA, RXDMA> {
async fn read(&mut self, address: u8, read: &mut [u8]) -> Result<(), Self::Error> {
self.read(address, read).await
}
async fn write(&mut self, address: u8, write: &[u8]) -> Result<(), Self::Error> {
self.write(address, write).await
}
async fn write_read(&mut self, address: u8, write: &[u8], read: &mut [u8]) -> Result<(), Self::Error> {
self.write_read(address, write, read).await
}
async fn transaction(
&mut self,
address: u8,
operations: &mut [embedded_hal_1::i2c::Operation<'_>],
) -> Result<(), Self::Error> {
let _ = address;
let _ = operations;
todo!()
}
}
|
