Struct Flash

pub struct Flash {
    pub regs: FLASH,
}

Fields

regs: FLASH

Implementations

impl Flash

pub fn unlock(&mut self) -> Result<(), Error>

Unlock the flash memory, allowing writes. See L4 Reference manual, section 3.3.5. (G4 RM section 5.3.5) “After reset, write is not allowed in the Flash control register (FLASH_CR) to protect the Flash memory against possible unwanted operations due, for example, to electric disturbances.”

pub fn lock(&mut self)

pub fn erase_page(&mut self, bank: Bank, sector: usize) -> Result<(), Error>

Erase a 128kb sector. See H743 RM, section 4.3.10: FLASH erase operations; subsection Flash sector erase sequence. Note that this is similar to the procedure for other families, but has a different name “sector” vice “page”, and the RM instructions are phrased differently.

pub fn erase_bank(&mut self, bank: Bank) -> Result<(), Error>

Erase one or both banks. Called “Mass erase” on single-bank variants like G4.

pub fn write_page( &mut self, bank: Bank, sector: usize, data: &[u8], ) -> Result<(), Error>

Write the contents of a sector. Must be erased first. See H742 or H723-35 RM, section 4.3.9. Make sure the sector is one your MCU has, and isn’t being used for the program itself. Writes a byte array, 256 bits at a time.

pub fn erase_write_page( &mut self, bank: Bank, page: usize, data: &[u8], ) -> Result<(), Error>

Erase a page, then write to it.

impl Flash

Contains code common to both modules.

pub fn new(regs: FLASH) -> Self

Create a struct used to perform operations on Flash.

pub fn read(&self, bank: Bank, page: usize, offset: usize, buf: &mut [u8])

Read flash memory at a given page and offset into an 8-bit-dword buffer.