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Add support for F3 flash

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This commit is contained in:
Matous Hybl 2022-05-02 15:14:10 +02:00
parent f7af9a549f
commit 4f5088d79d
14 changed files with 314 additions and 32 deletions
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2
embassy-boot/stm32/Cargo.toml
View File

@ -2,7 +2,7 @@
authors = [
"Ulf Lilleengen <lulf@redhat.com>",
]
edition = "2018"
edition = "2021"
name = "embassy-boot-stm32"
version = "0.1.0"
description = "Bootloader for STM32 chips"

112
embassy-stm32/src/flash/mod.rs
View File

@ -33,13 +33,13 @@ impl<'d> Flash<'d> {
pub fn unlock(p: impl Unborrow<Target = FLASH>) -> Self {
let flash = Self::new(p);
#[cfg(any(flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
pac::FLASH.keyr().write(|w| w.set_keyr(0x4567_0123));
pac::FLASH.keyr().write(|w| w.set_keyr(0xCDEF_89AB));
}
#[cfg(any(flash_l0))]
#[cfg(any(flash_l0, flash_l1))]
unsafe {
pac::FLASH.pekeyr().write(|w| w.set_pekeyr(0x89ABCDEF));
pac::FLASH.pekeyr().write(|w| w.set_pekeyr(0x02030405));
@ -51,7 +51,7 @@ impl<'d> Flash<'d> {
}
pub fn lock(&mut self) {
#[cfg(any(flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
pac::FLASH.cr().modify(|w| w.set_lock(true));
}
@ -89,31 +89,56 @@ impl<'d> Flash<'d> {
self.clear_all_err();
#[cfg(any(flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
pac::FLASH.cr().write(|w| w.set_pg(true))
}
let mut ret: Result<(), Error> = Ok(());
let mut offset = offset;
for chunk in buf.chunks(WRITE_SIZE) {
for val in chunk.chunks(4) {
#[cfg(not(flash_f3))]
let ret = {
let mut ret: Result<(), Error> = Ok(());
let mut offset = offset;
for chunk in buf.chunks(WRITE_SIZE) {
for val in chunk.chunks(4) {
unsafe {
write_volatile(
offset as *mut u32,
u32::from_le_bytes(val[0..4].try_into().unwrap()),
);
}
offset += val.len() as u32;
}
ret = self.blocking_wait_ready();
if ret.is_err() {
break;
}
}
ret
};
#[cfg(flash_f3)]
let ret = {
let mut ret: Result<(), Error> = Ok(());
let mut offset = offset;
for chunk in buf.chunks(2) {
unsafe {
write_volatile(
offset as *mut u32,
u32::from_le_bytes(val[0..4].try_into().unwrap()),
offset as *mut u16,
u16::from_le_bytes(chunk[0..2].try_into().unwrap()),
);
}
offset += val.len() as u32;
}
offset += chunk.len() as u32;
ret = self.blocking_wait_ready();
if ret.is_err() {
break;
ret = self.blocking_wait_ready();
if ret.is_err() {
break;
}
}
}
ret
};
#[cfg(any(flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
pac::FLASH.cr().write(|w| w.set_pg(false))
}
@ -144,23 +169,41 @@ impl<'d> Flash<'d> {
write_volatile(page as *mut u32, 0xFFFFFFFF);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
#[cfg(not(flash_f3))]
let idx = page / ERASE_SIZE as u32;
pac::FLASH.cr().modify(|w| {
w.set_per(true);
#[cfg(not(flash_f3))]
w.set_pnb(idx as u8);
#[cfg(any(flash_wl, flash_wb))]
w.set_strt(true);
#[cfg(any(flash_l4))]
w.set_start(true);
});
#[cfg(flash_f3)]
pac::FLASH.ar().write(|w| w.set_far(page));
#[cfg(flash_f3)]
pac::FLASH.cr().modify(|w| {
w.set_strt(true);
});
}
let ret: Result<(), Error> = self.blocking_wait_ready();
#[cfg(any(flash_wl, flash_wb, flash_l4))]
unsafe {
if pac::FLASH.sr().read().eop() {
pac::FLASH.sr().modify(|w| w.set_eop(true));
} else {
panic!("wtf")
}
}
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_f3))]
unsafe {
pac::FLASH.cr().modify(|w| w.set_per(false));
}
@ -196,10 +239,12 @@ impl<'d> Flash<'d> {
return Err(Error::Protected);
}
#[cfg(not(flash_f3))]
if sr.pgaerr() {
return Err(Error::Unaligned);
}
#[cfg(not(flash_f3))]
if sr.sizerr() {
return Err(Error::Size);
}
@ -213,6 +258,11 @@ impl<'d> Flash<'d> {
if sr.pgserr() {
return Err(Error::Seq);
}
#[cfg(flash_f3)]
if sr.pgerr() {
return Err(Error::Seq);
}
return Ok(());
}
}
@ -223,36 +273,42 @@ impl<'d> Flash<'d> {
pac::FLASH.sr().modify(|w| {
#[cfg(any(flash_wl, flash_wb, flash_l4, flash_l0))]
if w.rderr() {
w.set_rderr(false);
w.set_rderr(true);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
if w.fasterr() {
w.set_fasterr(false);
w.set_fasterr(true);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
if w.miserr() {
w.set_miserr(false);
w.set_miserr(true);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
if w.pgserr() {
w.set_pgserr(false);
w.set_pgserr(true);
}
#[cfg(flash_f3)]
if w.pgerr() {
w.set_pgerr(true);
}
#[cfg(not(flash_f3))]
if w.sizerr() {
w.set_sizerr(false);
w.set_sizerr(true);
}
#[cfg(not(flash_f3))]
if w.pgaerr() {
w.set_pgaerr(false);
w.set_pgaerr(true);
}
if w.wrperr() {
w.set_wrperr(false);
w.set_wrperr(true);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
if w.progerr() {
w.set_progerr(false);
w.set_progerr(true);
}
#[cfg(any(flash_wl, flash_wb, flash_l4))]
if w.operr() {
w.set_operr(false);
w.set_operr(true);
}
});
}

2
embassy-stm32/src/lib.rs
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@ -50,7 +50,7 @@ pub mod i2c;
#[cfg(crc)]
pub mod crc;
#[cfg(any(flash_l0, flash_l1, flash_wl, flash_wb, flash_l4))]
#[cfg(any(flash_l0, flash_l1, flash_wl, flash_wb, flash_l4, flash_f3))]
pub mod flash;
pub mod pwm;
#[cfg(rng)]

6
examples/boot/stm32f3/.cargo/config.toml Normal file
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@ -0,0 +1,6 @@
[target.'cfg(all(target_arch = "arm", target_os = "none"))']
# replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
runner = "probe-run --chip STM32F303VCTx"
[build]
target = "thumbv7em-none-eabihf"

26
examples/boot/stm32f3/Cargo.toml Normal file
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@ -0,0 +1,26 @@
[package]
authors = ["Ulf Lilleengen <lulf@redhat.com>"]
edition = "2021"
name = "embassy-boot-stm32f3-examples"
version = "0.1.0"
[dependencies]
embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f303re", "time-driver-any", "exti"] }
embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
embassy-traits = { version = "0.1.0", path = "../../../embassy-traits" }
defmt = { version = "0.3", optional = true }
defmt-rtt = { version = "0.3", optional = true }
panic-reset = { version = "0.1.1" }
embedded-hal = { version = "0.2.6" }
cortex-m = "0.7.3"
cortex-m-rt = "0.7.0"
[features]
defmt = [
"dep:defmt",
"embassy-stm32/defmt",
"embassy-boot-stm32/defmt",
]

29
examples/boot/stm32f3/README.md Normal file
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@ -0,0 +1,29 @@
# Examples using bootloader
Example for STM32F3 demonstrating the bootloader. The example consists of application binaries, 'a'
which allows you to press a button to start the DFU process, and 'b' which is the updated
application.
## Prerequisites
* `cargo-binutils`
* `cargo-flash`
* `embassy-boot-stm32`
## Usage
```
# Flash bootloader
cargo flash --manifest-path ../../../embassy-boot/stm32/Cargo.toml --release --features embassy-stm32/stm32f303re --chip STM32F303RETx
# Build 'b'
cargo build --release --bin b
# Generate binary for 'b'
cargo objcopy --release --bin b -- -O binary b.bin
```
# Flash `a` (which includes b.bin)
```
cargo flash --release --bin a --chip STM32F303RETx
```

37
examples/boot/stm32f3/build.rs Normal file
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@ -0,0 +1,37 @@
//! This build script copies the `memory.x` file from the crate root into
//! a directory where the linker can always find it at build time.
//! For many projects this is optional, as the linker always searches the
//! project root directory -- wherever `Cargo.toml` is. However, if you
//! are using a workspace or have a more complicated build setup, this
//! build script becomes required. Additionally, by requesting that
//! Cargo re-run the build script whenever `memory.x` is changed,
//! updating `memory.x` ensures a rebuild of the application with the
//! new memory settings.
use std::env;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
fn main() {
// Put `memory.x` in our output directory and ensure it's
// on the linker search path.
let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
File::create(out.join("memory.x"))
.unwrap()
.write_all(include_bytes!("memory.x"))
.unwrap();
println!("cargo:rustc-link-search={}", out.display());
// By default, Cargo will re-run a build script whenever
// any file in the project changes. By specifying `memory.x`
// here, we ensure the build script is only re-run when
// `memory.x` is changed.
println!("cargo:rerun-if-changed=memory.x");
println!("cargo:rustc-link-arg-bins=--nmagic");
println!("cargo:rustc-link-arg-bins=-Tlink.x");
if env::var("CARGO_FEATURE_DEFMT").is_ok() {
println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
}
}

15
examples/boot/stm32f3/memory.x Normal file
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@ -0,0 +1,15 @@
MEMORY
{
/* NOTE 1 K = 1 KiBi = 1024 bytes */
BOOTLOADER : ORIGIN = 0x08000000, LENGTH = 24K
BOOTLOADER_STATE : ORIGIN = 0x08006000, LENGTH = 4K
FLASH : ORIGIN = 0x08008000, LENGTH = 32K
DFU : ORIGIN = 0x08010000, LENGTH = 36K
RAM (rwx) : ORIGIN = 0x20000008, LENGTH = 32K
}
__bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(BOOTLOADER);
__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE) - ORIGIN(BOOTLOADER);
__bootloader_dfu_start = ORIGIN(DFU) - ORIGIN(BOOTLOADER);
__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU) - ORIGIN(BOOTLOADER);

44
examples/boot/stm32f3/src/bin/a.rs Normal file
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@ -0,0 +1,44 @@
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use embassy_boot_stm32::FirmwareUpdater;
use embassy_stm32::exti::ExtiInput;
use embassy_stm32::flash::Flash;
use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
use embassy_stm32::Peripherals;
use embassy_traits::adapter::BlockingAsync;
use panic_reset as _;
#[cfg(feature = "defmt-rtt")]
use defmt_rtt::*;
static APP_B: &[u8] = include_bytes!("../../b.bin");
#[embassy::main]
async fn main(_s: embassy::executor::Spawner, p: Peripherals) {
let flash = Flash::unlock(p.FLASH);
let mut flash = BlockingAsync::new(flash);
let button = Input::new(p.PC13, Pull::Up);
let mut button = ExtiInput::new(button, p.EXTI13);
let mut led = Output::new(p.PA5, Level::Low, Speed::Low);
led.set_high();
let mut updater = FirmwareUpdater::default();
button.wait_for_falling_edge().await;
let mut offset = 0;
for chunk in APP_B.chunks(2048) {
let mut buf: [u8; 2048] = [0; 2048];
buf[..chunk.len()].copy_from_slice(chunk);
updater
.write_firmware(offset, &buf, &mut flash, 2048)
.await
.unwrap();
offset += chunk.len();
}
updater.update(&mut flash).await.unwrap();
led.set_low();
cortex_m::peripheral::SCB::sys_reset();
}

25
examples/boot/stm32f3/src/bin/b.rs Normal file
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@ -0,0 +1,25 @@
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_stm32::Peripherals;
use panic_reset as _;
#[cfg(feature = "defmt-rtt")]
use defmt_rtt::*;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
let mut led = Output::new(p.PA5, Level::High, Speed::Low);
loop {
led.set_high();
Timer::after(Duration::from_millis(500)).await;
led.set_low();
Timer::after(Duration::from_millis(500)).await;
}
}

1
examples/stm32f3/Cargo.toml
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@ -19,3 +19,4 @@ panic-probe = { version = "0.3", features = ["print-defmt"] }
futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
heapless = { version = "0.7.5", default-features = false }
nb = "1.0.0"
embedded-storage = "0.3.0"

2
examples/stm32f3/src/bin/blinky.rs
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@ -15,7 +15,7 @@ use panic_probe as _;
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
let mut led = Output::new(p.PE12, Level::High, Speed::Low);
let mut led = Output::new(p.PA5, Level::High, Speed::Low);
loop {
info!("high");

43
examples/stm32f3/src/bin/flash.rs Normal file
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@ -0,0 +1,43 @@
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::{info, unwrap};
use embassy::executor::Spawner;
use embassy_stm32::flash::Flash;
use embassy_stm32::Peripherals;
use embedded_storage::nor_flash::{NorFlash, ReadNorFlash};
use defmt_rtt as _; // global logger
use panic_probe as _;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello Flash!");
const ADDR: u32 = 0x26000;
let mut f = Flash::unlock(p.FLASH);
info!("Reading...");
let mut buf = [0u8; 8];
unwrap!(f.read(ADDR, &mut buf));
info!("Read: {=[u8]:x}", buf);
info!("Erasing...");
unwrap!(f.erase(ADDR, ADDR + 2048));
info!("Reading...");
let mut buf = [0u8; 8];
unwrap!(f.read(ADDR, &mut buf));
info!("Read after erase: {=[u8]:x}", buf);
info!("Writing...");
unwrap!(f.write(ADDR, &[1, 2, 3, 4, 5, 6, 7, 8]));
info!("Reading...");
let mut buf = [0u8; 8];
unwrap!(f.read(ADDR, &mut buf));
info!("Read: {=[u8]:x}", buf);
assert_eq!(&buf[..], &[1, 2, 3, 4, 5, 6, 7, 8]);
}

2
stm32-data

@ -1 +1 @@
Subproject commit 9abfa9d2b51e6071fdc7e680b4a171e4fa20c2fb
Subproject commit b2d7a9f5de7dc3ae17c87c1ff94e13a822d18e74