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Add unimplemented family section

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This commit is contained in:
Rasmus Melchior Jacobsen 2023-03-29 13:57:33 +02:00
parent b7dfc8de10
commit 5a12fd6c75
1 changed files with 61 additions and 34 deletions
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95
embassy-stm32/src/flash/mod.rs
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@ -9,12 +9,45 @@ pub use crate::pac::{FLASH_BASE, FLASH_SIZE, WRITE_SIZE};
use crate::peripherals::FLASH;
use crate::Peripheral;
#[cfg_attr(any(flash_wl, flash_wb, flash_l0, flash_l1, flash_l4), path = "l.rs")]
#[cfg_attr(any(flash_l0, flash_l1, flash_l4, flash_wl, flash_wb), path = "l.rs")]
#[cfg_attr(flash_f3, path = "f3.rs")]
#[cfg_attr(flash_f4, path = "f4.rs")]
#[cfg_attr(flash_f7, path = "f7.rs")]
#[cfg_attr(flash_h7, path = "h7.rs")]
mod family;
#[cfg(not(any(
flash_l0, flash_l1, flash_l4, flash_wl, flash_wb, flash_f3, flash_f4, flash_f7, flash_h7
)))]
mod family {
use super::{Error, FlashSector};
pub(crate) unsafe fn lock() {
unimplemented!();
}
pub(crate) unsafe fn unlock() {
unimplemented!();
}
pub(crate) unsafe fn begin_write() {
unimplemented!();
}
pub(crate) unsafe fn end_write() {
unimplemented!();
}
pub(crate) unsafe fn blocking_write(_start_address: u32, _buf: &[u8; WRITE_SIZE]) -> Result<(), Error> {
unimplemented!();
}
pub(crate) unsafe fn blocking_erase_sector(_sector: &FlashSector) -> Result<(), Error> {
unimplemented!();
}
pub(crate) unsafe fn clear_all_err() {
unimplemented!();
}
pub(crate) fn get_sector(_address: u32) -> FlashSector {
unimplemented!();
}
}
pub struct Flash<'d> {
inner: PeripheralRef<'d, FLASH>,
}
@ -34,6 +67,33 @@ pub struct FlashSector {
pub size: u32,
}
pub trait FlashRegion {
const SETTINGS: FlashRegionSettings;
fn blocking_read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
Flash::blocking_read_inner(Self::SETTINGS.base as u32 + offset, bytes)
}
fn blocking_write(&mut self, offset: u32, buf: &[u8]) -> Result<(), Error> {
let start_address = Self::SETTINGS.base as u32 + offset;
// Protect agains simultaneous write/erase to multiple regions.
let _guard = take_lock_spin();
unsafe { Flash::blocking_write_inner(start_address, buf) }
}
fn blocking_erase(&mut self, from: u32, to: u32) -> Result<(), Error> {
let start_address = Self::SETTINGS.base as u32 + from;
let end_address = Self::SETTINGS.base as u32 + to;
// Protect agains simultaneous write/erase to multiple regions.
let _guard = take_lock_spin();
unsafe { Flash::blocking_erase_inner(start_address, end_address) }
}
}
static REGION_LOCK: Mutex<CriticalSectionRawMutex, ()> = Mutex::new(());
impl<'d> Flash<'d> {
@ -151,39 +211,6 @@ impl Drop for FlashRegions<'_> {
}
}
pub trait FlashRegion {
const SETTINGS: FlashRegionSettings;
fn blocking_read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Error> {
Flash::blocking_read_inner(Self::SETTINGS.base as u32 + offset, bytes)
}
fn blocking_write(&mut self, offset: u32, buf: &[u8]) -> Result<(), Error> {
let start_address = Self::SETTINGS.base as u32 + offset;
// Protect agains simultaneous write/erase to multiple regions.
let _guard = take_lock_spin();
unsafe {
family::clear_all_err();
Flash::blocking_write_inner(start_address, buf)
}
}
fn blocking_erase(&mut self, from: u32, to: u32) -> Result<(), Error> {
let start_address = Self::SETTINGS.base as u32 + from;
let end_address = Self::SETTINGS.base as u32 + to;
// Protect agains simultaneous write/erase to multiple regions.
let _guard = take_lock_spin();
unsafe {
family::clear_all_err();
Flash::blocking_erase_inner(start_address, end_address)
}
}
}
fn take_lock_spin() -> MutexGuard<'static, CriticalSectionRawMutex, ()> {
loop {
if let Ok(guard) = REGION_LOCK.try_lock() {