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#![no_main]
#![no_std]
extern crate panic_semihosting;
use cortex_m_rt::entry;
use cortex_m_semihosting::{dbg, hprintln};
use hal::prelude::*;
use lpc55_hal as hal;
#[repr(C)]
#[allow(dead_code)]
enum FlashCommands {
Init = 0x0,
PowerDown = 0x1,
SetReadMode = 0x2,
ReadSingleWord = 0x3,
EraseRange = 0x4,
BlankCheck = 0x5,
MarginCheck = 0x6,
Checksum = 0x7,
Write = 0x8,
WriteProg = 0xA,
Program = 0xC,
ReportEcc = 0xD,
}
#[entry]
fn main() -> ! {
let hal = hal::new();
// dbg!(hal.FLASH_CMPA.boot_cfg.read().bits());
// dbg!(hal.FLASH_CMPA.boot_cfg.read().boot_speed().is_value_0());
// dbg!(hal.FLASH_CMPA.boot_cfg.read().boot_speed().is_value_1());
// dbg!(hal.FLASH_CMPA.boot_cfg.read().boot_speed().is_value_2());
// dbg!(hal.FLASH_CMPA.usb_id.read().usb_vendor_id().bits());
// dbg!(hal.FLASH_CMPA.usb_id.read().usb_product_id().bits());
let mut anactrl = hal.anactrl;
let mut pmc = hal.pmc;
let mut syscon = hal.syscon;
hal::ClockRequirements::default()
.system_frequency(12.MHz())
.configure(&mut anactrl, &mut pmc, &mut syscon)
.unwrap();
let flash = hal.flash.enabled(&mut syscon);
let mut flash = hal::FlashGordon::new(flash);
// let flash = flash.release();
// fn show_status(flash: &hal::raw::FLASH) {
// dbg!(flash.int_status.read().done().bit());
// dbg!(flash.int_status.read().ecc_err().bit());
// dbg!(flash.int_status.read().err().bit());
// dbg!(flash.int_status.read().fail().bit());
// }
// // show_status(&flash);
// flash.event.write(|w| w.rst().set_bit());
// // seems immediate
// while flash.int_status.read().done().bit_is_clear() {}
// // first thing to check! illegal command
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// // first thing to check! legal command failed
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// // show_status(&flash);
// const READ_SIZE: usize = 16;
// fn read_native(addr: usize, flash: &hal::raw::FLASH) -> [u8; READ_SIZE] {
// let addr = addr as u32;
// debug_assert!(addr & (READ_SIZE as u32 - 1) == 0);
// let mut physical_word = [0u8; 16];
// flash.starta.write(|w| unsafe { w.starta().bits(addr >> 4) } );
// flash.cmd.write(|w| unsafe { w.bits(FlashCommands::ReadSingleWord as u32) });
// while flash.int_status.read().done().bit_is_clear() {}
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// for (i, chunk) in physical_word.chunks_mut(4).enumerate() {
// chunk.copy_from_slice(&flash.dataw[i].read().bits().to_ne_bytes());
// }
// physical_word
// }
// // non-secure: 0x0000_0000 to 0x0009_FFFF;
// const WHERE: u32 = 0x0004_0000; // 256kB offset
// let page = WHERE >> 4;
// // flash.starta.write(|w| unsafe { w.starta().bits(WHERE >> 4) } );
// // flash.cmd.write(|w| unsafe { w.bits(FlashCommands::ReadSingleWord as u32) });
// // while flash.int_status.read().done().bit_is_clear() {}
// // debug_assert!(flash.int_status.read().err().bit_is_clear());
// // debug_assert!(flash.int_status.read().fail().bit_is_clear());
// // // show_status(&flash);
// // dbgx!(flash.dataw[0].read().bits());
// // dbgx!(flash.dataw[1].read().bits());
// // dbgx!(flash.dataw[2].read().bits());
// // dbgx!(flash.dataw[3].read().bits());
// dbg!(read_native(WHERE as usize, &flash));
// // now erase the page
// flash.stopa.write(|w| unsafe { w.stopa().bits(WHERE >> 4) } );
// flash.cmd.write(|w| unsafe { w.bits(FlashCommands::EraseRange as u32) });
// while flash.int_status.read().done().bit_is_clear() {}
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// // check it's erased
// flash.cmd.write(|w| unsafe { w.bits(FlashCommands::BlankCheck as u32) });
// while flash.int_status.read().done().bit_is_clear() {}
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// hprintln!("Page {:#x} ({}) is blank!", page, page);
// // write some stuff
// let data: [u32; 4] = [0x7, 0x2, 0x3, 0x4];
// for i in 0..=3 {
// flash.dataw[i].write(|w| unsafe { w.bits(data[i]) } );
// }
// flash.cmd.write(|w| unsafe { w.bits(FlashCommands::Write as u32) });
// while flash.int_status.read().done().bit_is_clear() {}
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// // program it
// flash.cmd.write(|w| unsafe { w.bits(FlashCommands::Program as u32) });
// while flash.int_status.read().done().bit_is_clear() {}
// debug_assert!(flash.int_status.read().err().bit_is_clear());
// debug_assert!(flash.int_status.read().fail().bit_is_clear());
// let x: u8 = unsafe { core::ptr::read_volatile(0x0004_0000 as *const u8) } ;
// hprintln!("{:x}", x);
// let x: u32 = unsafe { core::ptr::read_volatile(0x0004_0004 as *const u32) } ;
// hprintln!("{:x}", x);
dbg!("before erasing");
hprintln!("{:#034x}", flash.read_u128(0x4_0000));
const WHERE: usize = 0x0004_0000; // 256kB offset
dbg!("after erasing");
flash.erase_page(WHERE >> 4).unwrap();
hprintln!("{:#034x}", flash.read_u128(0x4_0000));
dbg!("after writing");
flash.write_u32(WHERE, 0x1234_5678).unwrap();
hprintln!("{:#034x}", flash.read_u128(0x4_0000));
dbg!("after erasing again");
flash.erase_page(WHERE >> 4).unwrap();
hprintln!("{:#034x}", flash.read_u128(0x4_0000));
dbg!("after writing with offset 4");
flash.write_u32(WHERE + 4, 0x1234_5678).unwrap();
hprintln!("{:#034x}", flash.read_u128(0x4_0000));
hprintln!("{:#034x}", flash.read_u128(0x4_0010));
hprintln!("{:#034x}", flash.read_u128(0x4_0020));
let mut read_buf = [0u8; 16];
flash.read(WHERE, &mut read_buf);
// dbg!(read_buf);
flash.erase_page(0x4_0200).unwrap();
hprintln!("supposedly erased");
// dbg!(flash.status());
flash.read(WHERE, &mut read_buf);
// dbg!(read_buf);
let data: [u8; 4] = [0x7, 0x2, 0x3, 0x4];
let mut buf = [0u8; 512];
buf[..4].copy_from_slice(&data);
flash
.write_native(WHERE, generic_array::GenericArray::from_slice(&buf))
.unwrap();
buf[0] = 37;
// // buf[3] = 37;
flash
.write_native(WHERE, generic_array::GenericArray::from_slice(&buf))
.unwrap();
flash.write_u8(0x4_000F, 69).ok();
flash.read(WHERE, &mut read_buf);
// dbg!(read_buf);
// flash.clear_page_register();
// flash.just_program_at(0x4_0200).unwrap();
flash.erase_page(0x4_0200 >> 4).unwrap();
// flash.read(0x4_0200, &mut read_buf);
// dbg!(read_buf);
// flash.write_u32(0x4_0200, 32).ok();
// hprintln!("{:#x}", flash.read_u128(0x4_0200));
// flash.read(0x4_0200, &mut read_buf);
// dbg!(read_buf);
// // flash.write_u8(0x4_0206, 64).ok();
// flash.write_u32(0x4_0204, 128).ok();
// hprintln!("{:#x}", flash.read_u128(0x4_0200));
// flash.read(0x4_0200, &mut read_buf);
// dbg!(read_buf);
// // flash.read(0x4_0210, &mut read_buf);
// // dbg!(read_buf);
hprintln!("{:#034x}", flash.read_u128(0x4_0200));
hprintln!("{:#034x}", flash.read_u128(0x4_0210));
hprintln!("{:#034x}", flash.read_u128(0x4_0220));
flash.write_u128(0x4_0200, 0x1234567).unwrap();
// hal::wait_at_least(1_000_000);
flash.write_u128(0x4_0210, 0x7654321).unwrap();
// hal::wait_at_least(1_000_000);
// flash.write_u128(0x4_0200, 0x1234567).unwrap();
hprintln!("{:#034x}", flash.read_u128(0x4_0200));
hprintln!("{:#034x}", flash.read_u128(0x4_0210));
hprintln!("{:#034x}", flash.read_u128(0x4_0220));
hprintln!("loop-continue");
loop {
continue;
}
}
#[cfg(feature = "littlefs")]
lpc55_hal::littlefs2_filesystem!(InternalFilesystem: (0, 10));