From dd9f0d9d9e73feffce371ab7fda714b09b268715 Mon Sep 17 00:00:00 2001 From: Zach Date: Sat, 17 Feb 2024 12:04:53 -0600 Subject: support u5 flash --- examples/stm32u5/src/bin/flash.rs | 55 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 examples/stm32u5/src/bin/flash.rs (limited to 'examples/stm32u5/src') diff --git a/examples/stm32u5/src/bin/flash.rs b/examples/stm32u5/src/bin/flash.rs new file mode 100644 index 000000000..e4fd6bb9c --- /dev/null +++ b/examples/stm32u5/src/bin/flash.rs @@ -0,0 +1,55 @@ +#![no_std] +#![no_main] + +use defmt::{info, unwrap}; +use embassy_executor::Spawner; +use embassy_stm32::flash::Flash; +use embassy_time::Timer; +use {defmt_rtt as _, panic_probe as _}; + +#[embassy_executor::main] +async fn main(_spawner: Spawner) { + let p = embassy_stm32::init(Default::default()); + info!("Hello Flash!"); + + const ADDR: u32 = 0x8_0000; // This is the offset into the third region, the absolute address is 4x32K + 128K + 0x8_0000. + + // wait a bit before accessing the flash + Timer::after_millis(300).await; + + let mut f = Flash::new_blocking(p.FLASH).into_blocking_regions().bank1_region; + + info!("Reading..."); + let mut buf = [0u8; 32]; + unwrap!(f.blocking_read(ADDR, &mut buf)); + info!("Read: {=[u8]:x}", buf); + + info!("Erasing..."); + unwrap!(f.blocking_erase(ADDR, ADDR + 256 * 1024)); + + info!("Reading..."); + let mut buf = [0u8; 32]; + unwrap!(f.blocking_read(ADDR, &mut buf)); + info!("Read after erase: {=[u8]:x}", buf); + + info!("Writing..."); + unwrap!(f.blocking_write( + ADDR, + &[ + 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, + 30, 31, 32 + ] + )); + + info!("Reading..."); + let mut buf = [0u8; 32]; + unwrap!(f.blocking_read(ADDR, &mut buf)); + info!("Read: {=[u8]:x}", buf); + assert_eq!( + &buf[..], + &[ + 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, + 30, 31, 32 + ] + ); +} -- cgit