Help¶

Use the Read-Modify-Write command (opcode 0x58) instead of the default Main Memory Program without Built-In Erase (opcode 0x02). This allows writing of data without prior erasing of corresponding pages.

Direct dependencies¶

SPI_FLASH_AT45 && FLASH

(Includes any dependencies from ifs and menus.)

Default¶

y

Kconfig definition¶

At <Zephyr>/drivers/flash/Kconfig.at45:22

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:32 → <Zephyr>/drivers/Kconfig:60 → <Zephyr>/drivers/flash/Kconfig:61

Menu path: (Top) → Device Drivers → Flash hardware support → AT45 family flash driver

config SPI_FLASH_AT45_USE_READ_MODIFY_WRITE
    bool "Use Read-Modify-Write command in flash_write()"
    default y
    depends on SPI_FLASH_AT45 && FLASH
    help
      Use the Read-Modify-Write command (opcode 0x58) instead of the default
      Main Memory Program without Built-In Erase (opcode 0x02). This allows
      writing of data without prior erasing of corresponding pages.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)