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Align F7 family

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This commit is contained in:
Rasmus Melchior Jacobsen 2023-03-25 06:26:00 +01:00
parent 99c4346579
commit a8567f0617
1 changed files with 19 additions and 20 deletions
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39
embassy-stm32/src/flash/f7.rs
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@ -1,10 +1,17 @@
use core::convert::TryInto;
use core::mem::size_of;
use core::ptr::write_volatile;
use core::sync::atomic::{fence, Ordering};
use embassy_hal_common::stm32::flash::f7::get_sector;
use super::FlashRegion;
use crate::flash::Error;
use crate::pac;
pub(crate) const MAX_WRITE_SIZE: usize = super::MAINC::WRITE_SIZE;
pub(crate) const MAX_ERASE_SIZE: usize = super::MAINC::ERASE_SIZE;
pub(crate) unsafe fn lock() {
pac::FLASH.cr().modify(|w| w.set_lock(true));
}
@ -14,7 +21,7 @@ pub(crate) unsafe fn unlock() {
pac::FLASH.keyr().write(|w| w.set_key(0xCDEF_89AB));
}
pub(crate) unsafe fn blocking_write(offset: u32, buf: &[u8]) -> Result<(), Error> {
pub(crate) unsafe fn blocking_write(first_address: u32, buf: &[u8]) -> Result<(), Error> {
pac::FLASH.cr().write(|w| {
w.set_pg(true);
w.set_psize(pac::flash::vals::Psize::PSIZE32);
@ -22,11 +29,13 @@ pub(crate) unsafe fn blocking_write(offset: u32, buf: &[u8]) -> Result<(), Error
let ret = {
let mut ret: Result<(), Error> = Ok(());
let mut offset = offset;
for chunk in buf.chunks(super::WRITE_SIZE) {
for val in chunk.chunks(4) {
write_volatile(offset as *mut u32, u32::from_le_bytes(val[0..4].try_into().unwrap()));
offset += val.len() as u32;
let mut address = first_address;
for chunk in buf.chunks(MAX_WRITE_SIZE) {
let vals = chunk.chunks_exact(size_of::<u32>());
assert!(vals.remainder().is_empty());
for val in vals {
write_volatile(address as *mut u32, u32::from_le_bytes(val.try_into().unwrap()));
address += val.len() as u32;
// prevents parallelism errors
fence(Ordering::SeqCst);
@ -45,20 +54,10 @@ pub(crate) unsafe fn blocking_write(offset: u32, buf: &[u8]) -> Result<(), Error
ret
}
pub(crate) unsafe fn blocking_erase(from: u32, to: u32) -> Result<(), Error> {
let start_sector = if from >= (super::FLASH_BASE + super::ERASE_SIZE / 2) as u32 {
4 + (from - super::FLASH_BASE as u32) / super::ERASE_SIZE as u32
} else {
(from - super::FLASH_BASE as u32) / (super::ERASE_SIZE as u32 / 8)
};
let end_sector = if to >= (super::FLASH_BASE + super::ERASE_SIZE / 2) as u32 {
4 + (to - super::FLASH_BASE as u32) / super::ERASE_SIZE as u32
} else {
(to - super::FLASH_BASE as u32) / (super::ERASE_SIZE as u32 / 8)
};
for sector in start_sector..end_sector {
pub(crate) unsafe fn blocking_erase(from_address: u32, to_address: u32) -> Result<(), Error> {
let start_sector = get_sector(from_address);
let end_sector = get_sector(to_address);
for sector in start_sector.index..end_sector.index {
let ret = erase_sector(sector as u8);
if ret.is_err() {
return ret;