56 lines
1.5 KiB
Rust
56 lines
1.5 KiB
Rust
#![no_std]
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#![no_main]
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use defmt::{info, unwrap};
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use embassy_executor::Spawner;
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use embassy_stm32::flash::Flash;
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_stm32::init(Default::default());
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info!("Hello Flash!");
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const ADDR: u32 = 0; // This is the offset into bank 2, the absolute address is 0x8_0000
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// wait a bit before accessing the flash
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Timer::after_millis(300).await;
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let mut f = Flash::new_blocking(p.FLASH).into_blocking_regions().bank2_region;
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info!("Reading...");
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let mut buf = [0u8; 32];
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unwrap!(f.blocking_read(ADDR, &mut buf));
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info!("Read: {=[u8]:x}", buf);
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info!("Erasing...");
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unwrap!(f.blocking_erase(ADDR, ADDR + 128 * 1024));
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info!("Reading...");
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let mut buf = [0u8; 32];
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unwrap!(f.blocking_read(ADDR, &mut buf));
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info!("Read after erase: {=[u8]:x}", buf);
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info!("Writing...");
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unwrap!(f.blocking_write(
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ADDR,
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&[
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
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30, 31, 32
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]
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));
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info!("Reading...");
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let mut buf = [0u8; 32];
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unwrap!(f.blocking_read(ADDR, &mut buf));
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info!("Read: {=[u8]:x}", buf);
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assert_eq!(
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&buf[..],
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&[
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
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30, 31, 32
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]
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);
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}
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