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Add MAX_ERASE_SIZE const in build script, and use it in flash-wide implementation of embedded-storage traits

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This commit is contained in:
Mathias 2023-04-18 15:49:33 +02:00
parent 1c68c62ebd
commit 095f5ef279
3 changed files with 12 additions and 3 deletions
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8
embassy-stm32/build.rs
View File

@ -255,6 +255,14 @@ fn main() {
];
});
let max_erase_size = flash_memory_regions
.iter()
.map(|region| region.settings.as_ref().unwrap().erase_size)
.max()
.unwrap();
g.extend(quote! { pub const MAX_ERASE_SIZE: u32 = #max_erase_size });
g.extend(quote! { pub mod flash_regions { #flash_regions } });
// ========

6
embassy-stm32/src/flash/common.rs
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@ -2,7 +2,7 @@ use atomic_polyfill::{fence, Ordering};
use embassy_hal_common::drop::OnDrop;
use embassy_hal_common::{into_ref, PeripheralRef};
use super::{family, Error, FlashLayout, FlashRegion, FlashSector, FLASH_BASE, FLASH_SIZE, WRITE_SIZE};
use super::{family, Error, FlashLayout, FlashRegion, FlashSector, FLASH_BASE, FLASH_SIZE, MAX_ERASE_SIZE, WRITE_SIZE};
use crate::flash::FlashBank;
use crate::Peripheral;
@ -179,8 +179,8 @@ impl embedded_storage::nor_flash::ReadNorFlash for Flash<'_> {
}
impl embedded_storage::nor_flash::NorFlash for Flash<'_> {
const WRITE_SIZE: usize = 8;
const ERASE_SIZE: usize = 2048;
const WRITE_SIZE: usize = WRITE_SIZE;
const ERASE_SIZE: usize = MAX_ERASE_SIZE;
fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Self::Error> {
self.blocking_write(offset, bytes)

1
embassy-stm32/src/flash/mod.rs
View File

@ -7,6 +7,7 @@ mod common;
pub use common::*;
pub use crate::_generated::flash_regions::*;
pub use crate::_generated::MAX_ERASE_SIZE;
pub use crate::pac::{FLASH_BASE, FLASH_SIZE, WRITE_SIZE};
#[derive(Debug)]