136 lines
4.8 KiB
Rust
136 lines
4.8 KiB
Rust
//! This example test the flash connected to the RP2040 chip.
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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::{Async, ERASE_SIZE, FLASH_BASE};
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use embassy_rp::peripherals::FLASH;
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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const ADDR_OFFSET: u32 = 0x100000;
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const FLASH_SIZE: usize = 2 * 1024 * 1024;
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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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// add some delay to give an attached debug probe time to parse the
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// defmt RTT header. Reading that header might touch flash memory, which
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// interferes with flash write operations.
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// https://github.com/knurling-rs/defmt/pull/683
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Timer::after_millis(10).await;
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let mut flash = embassy_rp::flash::Flash::<_, Async, FLASH_SIZE>::new(p.FLASH, p.DMA_CH0);
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// Get JEDEC id
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let jedec = flash.blocking_jedec_id().unwrap();
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info!("jedec id: 0x{:x}", jedec);
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// Get unique id
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let mut uid = [0; 8];
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flash.blocking_unique_id(&mut uid).unwrap();
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info!("unique id: {:?}", uid);
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erase_write_sector(&mut flash, 0x00);
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multiwrite_bytes(&mut flash, ERASE_SIZE as u32);
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background_read(&mut flash, (ERASE_SIZE * 2) as u32).await;
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loop {}
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}
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fn multiwrite_bytes(flash: &mut embassy_rp::flash::Flash<'_, FLASH, Async, FLASH_SIZE>, offset: u32) {
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info!(">>>> [multiwrite_bytes]");
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let mut read_buf = [0u8; ERASE_SIZE];
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + offset, &mut read_buf));
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info!("Addr of flash block is {:x}", ADDR_OFFSET + offset + FLASH_BASE as u32);
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info!("Contents start with {=[u8]}", read_buf[0..4]);
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defmt::unwrap!(flash.blocking_erase(ADDR_OFFSET + offset, ADDR_OFFSET + offset + ERASE_SIZE as u32));
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + offset, &mut read_buf));
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info!("Contents after erase starts with {=[u8]}", read_buf[0..4]);
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if read_buf.iter().any(|x| *x != 0xFF) {
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defmt::panic!("unexpected");
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}
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defmt::unwrap!(flash.blocking_write(ADDR_OFFSET + offset, &[0x01]));
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defmt::unwrap!(flash.blocking_write(ADDR_OFFSET + offset + 1, &[0x02]));
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defmt::unwrap!(flash.blocking_write(ADDR_OFFSET + offset + 2, &[0x03]));
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defmt::unwrap!(flash.blocking_write(ADDR_OFFSET + offset + 3, &[0x04]));
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + offset, &mut read_buf));
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info!("Contents after write starts with {=[u8]}", read_buf[0..4]);
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if &read_buf[0..4] != &[0x01, 0x02, 0x03, 0x04] {
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defmt::panic!("unexpected");
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}
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}
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fn erase_write_sector(flash: &mut embassy_rp::flash::Flash<'_, FLASH, Async, FLASH_SIZE>, offset: u32) {
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info!(">>>> [erase_write_sector]");
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let mut buf = [0u8; ERASE_SIZE];
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + offset, &mut buf));
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info!("Addr of flash block is {:x}", ADDR_OFFSET + offset + FLASH_BASE as u32);
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info!("Contents start with {=[u8]}", buf[0..4]);
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defmt::unwrap!(flash.blocking_erase(ADDR_OFFSET + offset, ADDR_OFFSET + offset + ERASE_SIZE as u32));
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + 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.blocking_write(ADDR_OFFSET + offset, &buf));
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defmt::unwrap!(flash.blocking_read(ADDR_OFFSET + 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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}
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async fn background_read(flash: &mut embassy_rp::flash::Flash<'_, FLASH, Async, FLASH_SIZE>, offset: u32) {
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info!(">>>> [background_read]");
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let mut buf = [0u32; 8];
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defmt::unwrap!(flash.background_read(ADDR_OFFSET + offset, &mut buf)).await;
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info!("Addr of flash block is {:x}", ADDR_OFFSET + offset + FLASH_BASE as u32);
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info!("Contents start with {=u32:x}", buf[0]);
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defmt::unwrap!(flash.blocking_erase(ADDR_OFFSET + offset, ADDR_OFFSET + offset + ERASE_SIZE as u32));
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defmt::unwrap!(flash.background_read(ADDR_OFFSET + offset, &mut buf)).await;
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info!("Contents after erase starts with {=u32:x}", buf[0]);
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if buf.iter().any(|x| *x != 0xFFFFFFFF) {
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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 = 0xDABA1234;
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}
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defmt::unwrap!(flash.blocking_write(ADDR_OFFSET + offset, unsafe {
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core::slice::from_raw_parts(buf.as_ptr() as *const u8, buf.len() * 4)
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}));
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defmt::unwrap!(flash.background_read(ADDR_OFFSET + offset, &mut buf)).await;
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info!("Contents after write starts with {=u32:x}", buf[0]);
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if buf.iter().any(|x| *x != 0xDABA1234) {
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defmt::panic!("unexpected");
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}
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}
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