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Let Flash<Async/Blocking> be a thing

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This commit is contained in:
Rasmus Melchior Jacobsen
2023-05-25 21:40:54 +02:00
parent 18d14dff48
commit 860b519f99
19 changed files with 63 additions and 43 deletions
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13
embassy-stm32/src/flash/asynch.rs
View File

@ -10,25 +10,22 @@ use super::{
pub(super) static REGION_ACCESS: Mutex<CriticalSectionRawMutex, ()> = Mutex::new(());
impl<'d> Flash<'d> {
impl<'d> Flash<'d, Async> {
pub fn into_regions(self) -> FlashLayout<'d, Async> {
assert!(!self.blocking_only);
family::set_default_layout();
FlashLayout::new(self.inner)
}
pub async fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Error> {
assert!(!self.blocking_only);
unsafe { write_chunked(FLASH_BASE as u32, FLASH_SIZE as u32, offset, bytes).await }
}
pub async fn erase(&mut self, from: u32, to: u32) -> Result<(), Error> {
assert!(!self.blocking_only);
unsafe { erase_sectored(FLASH_BASE as u32, from, to).await }
}
}
impl embedded_storage_async::nor_flash::ReadNorFlash for Flash<'_> {
impl embedded_storage_async::nor_flash::ReadNorFlash for Flash<'_, Async> {
const READ_SIZE: usize = READ_SIZE;
async fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
@ -40,7 +37,7 @@ impl embedded_storage_async::nor_flash::ReadNorFlash for Flash<'_> {
}
}
impl embedded_storage_async::nor_flash::NorFlash for Flash<'_> {
impl embedded_storage_async::nor_flash::NorFlash for Flash<'_, Async> {
const WRITE_SIZE: usize = WRITE_SIZE;
const ERASE_SIZE: usize = MAX_ERASE_SIZE;
@ -114,7 +111,7 @@ pub(super) async unsafe fn erase_sectored(base: u32, from: u32, to: u32) -> Resu
foreach_flash_region! {
($type_name:ident, $write_size:literal, $erase_size:literal) => {
impl crate::_generated::flash_regions::$type_name<'_, Async> {
pub fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
pub async fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
read_blocking(self.0.base, self.0.size, offset, bytes)
}
@ -133,7 +130,7 @@ foreach_flash_region! {
const READ_SIZE: usize = READ_SIZE;
async fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
self.read(offset, bytes)
self.read(offset, bytes).await
}
fn capacity(&self) -> usize {

37
embassy-stm32/src/flash/common.rs
View File

@ -1,3 +1,5 @@
use core::marker::PhantomData;
use atomic_polyfill::{fence, Ordering};
use embassy_cortex_m::interrupt::{Interrupt, InterruptExt};
use embassy_hal_common::drop::OnDrop;
@ -5,19 +7,18 @@ use embassy_hal_common::{into_ref, PeripheralRef};
use stm32_metapac::FLASH_BASE;
use super::{
family, Blocking, Error, FlashBank, FlashLayout, FlashRegion, FlashSector, FLASH_SIZE, MAX_ERASE_SIZE, READ_SIZE,
WRITE_SIZE,
family, Async, Blocking, Error, FlashBank, FlashLayout, FlashRegion, FlashSector, FLASH_SIZE, MAX_ERASE_SIZE,
READ_SIZE, WRITE_SIZE,
};
use crate::peripherals::FLASH;
use crate::{interrupt, Peripheral};
pub struct Flash<'d> {
pub struct Flash<'d, MODE = Async> {
pub(crate) inner: PeripheralRef<'d, FLASH>,
#[cfg(all(feature = "nightly", flash_f4))]
pub(crate) blocking_only: bool,
_mode: PhantomData<MODE>,
}
impl<'d> Flash<'d> {
impl<'d> Flash<'d, Async> {
pub fn new(
p: impl Peripheral<P = FLASH> + 'd,
_irq: impl interrupt::Binding<crate::interrupt::FLASH, InterruptHandler> + 'd,
@ -30,21 +31,23 @@ impl<'d> Flash<'d> {
Self {
inner: p,
#[cfg(all(feature = "nightly", flash_f4))]
blocking_only: false,
_mode: PhantomData,
}
}
}
pub fn new_blocking_only(p: impl Peripheral<P = FLASH> + 'd) -> Self {
impl<'d> Flash<'d, Blocking> {
pub fn new_blocking(p: impl Peripheral<P = FLASH> + 'd) -> Self {
into_ref!(p);
Self {
inner: p,
#[cfg(all(feature = "nightly", flash_f4))]
blocking_only: true,
_mode: PhantomData,
}
}
}
impl<'d, MODE> Flash<'d, MODE> {
pub fn into_blocking_regions(self) -> FlashLayout<'d, Blocking> {
family::set_default_layout();
FlashLayout::new(self.inner)
@ -222,11 +225,11 @@ pub(super) fn ensure_sector_aligned(
Ok(())
}
impl embedded_storage::nor_flash::ErrorType for Flash<'_> {
impl<MODE> embedded_storage::nor_flash::ErrorType for Flash<'_, MODE> {
type Error = Error;
}
impl embedded_storage::nor_flash::ReadNorFlash for Flash<'_> {
impl<MODE> embedded_storage::nor_flash::ReadNorFlash for Flash<'_, MODE> {
const READ_SIZE: usize = READ_SIZE;
fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
@ -238,7 +241,7 @@ impl embedded_storage::nor_flash::ReadNorFlash for Flash<'_> {
}
}
impl embedded_storage::nor_flash::NorFlash for Flash<'_> {
impl<MODE> embedded_storage::nor_flash::NorFlash for Flash<'_, MODE> {
const WRITE_SIZE: usize = WRITE_SIZE;
const ERASE_SIZE: usize = MAX_ERASE_SIZE;
@ -253,11 +256,13 @@ impl embedded_storage::nor_flash::NorFlash for Flash<'_> {
foreach_flash_region! {
($type_name:ident, $write_size:literal, $erase_size:literal) => {
impl<'d> crate::_generated::flash_regions::$type_name<'d, Blocking> {
impl<MODE> crate::_generated::flash_regions::$type_name<'_, MODE> {
pub fn read_blocking(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
read_blocking(self.0.base, self.0.size, offset, bytes)
}
}
impl crate::_generated::flash_regions::$type_name<'_, Blocking> {
pub fn write_blocking(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Error> {
unsafe { write_blocking(self.0.base, self.0.size, offset, bytes, write_chunk_with_critical_section) }
}
@ -271,7 +276,7 @@ foreach_flash_region! {
type Error = Error;
}
impl embedded_storage::nor_flash::ReadNorFlash for crate::_generated::flash_regions::$type_name<'_, Blocking> {
impl<MODE> embedded_storage::nor_flash::ReadNorFlash for crate::_generated::flash_regions::$type_name<'_, MODE> {
const READ_SIZE: usize = READ_SIZE;
fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {

22
embassy-stm32/src/flash/f4.rs
View File

@ -107,10 +107,16 @@ mod alt_regions {
macro_rules! foreach_altflash_region {
($type_name:ident, $region:ident) => {
impl<MODE> $type_name<'_, MODE> {
pub fn read_blocking(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
crate::flash::common::read_blocking(self.0.base, self.0.size, offset, bytes)
}
}
#[cfg(feature = "nightly")]
impl $type_name<'_, Async> {
pub async fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
crate::flash::common::read_blocking(self.0.base, self.0.size, offset, bytes)
self.read_blocking(offset, bytes)
}
pub async fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Error> {
@ -124,10 +130,22 @@ mod alt_regions {
}
}
impl embedded_storage::nor_flash::ErrorType for $type_name<'_, Async> {
impl<MODE> embedded_storage::nor_flash::ErrorType for $type_name<'_, MODE> {
type Error = Error;
}
impl<MODE> embedded_storage::nor_flash::ReadNorFlash for $type_name<'_, MODE> {
const READ_SIZE: usize = crate::flash::READ_SIZE;
fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
self.read_blocking(offset, bytes)
}
fn capacity(&self) -> usize {
self.0.size as usize
}
}
#[cfg(feature = "nightly")]
impl embedded_storage_async::nor_flash::ReadNorFlash for $type_name<'_, Async> {
const READ_SIZE: usize = crate::flash::READ_SIZE;