48 lines
1.3 KiB
Rust
48 lines
1.3 KiB
Rust
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#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_rp::flash::{ERASE_SIZE, FLASH_BASE};
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use {defmt_rtt as _, panic_probe as _};
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const ADDR_OFFSET: u32 = 0x4000;
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_rp::init(Default::default());
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info!("Hello World!");
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let mut flash = embassy_rp::flash::Flash::<_, { 2 * 1024 * 1024 }>::new(p.FLASH);
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let mut buf = [0u8; ERASE_SIZE];
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defmt::unwrap!(flash.read(ADDR_OFFSET, &mut buf));
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info!("Addr of flash block is {:x}", ADDR_OFFSET + FLASH_BASE as u32);
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info!("Contents start with {=[u8]}", buf[0..4]);
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defmt::unwrap!(flash.erase(ADDR_OFFSET, ADDR_OFFSET + ERASE_SIZE as u32));
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defmt::unwrap!(flash.read(ADDR_OFFSET, &mut buf));
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info!("Contents after erase starts with {=[u8]}", buf[0..4]);
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if buf.iter().any(|x| *x != 0xFF) {
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defmt::panic!("unexpected");
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}
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for b in buf.iter_mut() {
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*b = 0xDA;
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}
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defmt::unwrap!(flash.write(ADDR_OFFSET, &mut buf));
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defmt::unwrap!(flash.read(ADDR_OFFSET, &mut buf));
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info!("Contents after write starts with {=[u8]}", buf[0..4]);
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if buf.iter().any(|x| *x != 0xDA) {
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defmt::panic!("unexpected");
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}
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info!("Test OK");
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cortex_m::asm::bkpt();
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}
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