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fix(stm32h7/flash): enhance resilience to program sequence errors (pgserr)

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Badr Bouslikhin 2024-02-06 12:30:04 +01:00
parent ad7d4494fa
commit aab5da1d3b
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GPG key ID: 3B081233DD4DE99B
1 changed files with 6 additions and 2 deletions
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8
embassy-stm32/src/flash/h7.rs
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@ -77,12 +77,12 @@ pub(crate) unsafe fn blocking_write(start_address: u32, buf: &[u8; WRITE_SIZE])
} }
} }
bank.cr().write(|w| w.set_pg(false));
cortex_m::asm::isb(); cortex_m::asm::isb();
cortex_m::asm::dsb(); cortex_m::asm::dsb();
fence(Ordering::SeqCst); fence(Ordering::SeqCst);
bank.cr().write(|w| w.set_pg(false));
res.unwrap() res.unwrap()
} }
@ -100,6 +100,10 @@ pub(crate) unsafe fn blocking_erase_sector(sector: &FlashSector) -> Result<(), E
w.set_start(true); w.set_start(true);
}); });
cortex_m::asm::isb();
cortex_m::asm::dsb();
fence(Ordering::SeqCst);
let ret: Result<(), Error> = blocking_wait_ready(bank); let ret: Result<(), Error> = blocking_wait_ready(bank);
bank.cr().modify(|w| w.set_ser(false)); bank.cr().modify(|w| w.set_ser(false));
bank_clear_all_err(bank); bank_clear_all_err(bank);