SPI_flash memory

[Hubersch]

I'm trying to use the full potential of the external memory on the NRF52840-DK. 

I want to modify the FLASH_SECTOR_SIZE:

#define FLASH_TEST_REGION_OFFSET 0xff000
#endif
#define FLASH_SECTOR_SIZE        4096

4096 are in bytes. When i try to add, for example 256 to the size i will the following error:

At what interval can i add byets to enlargen the FLASH_SECTOR_SIZE?

[Jørgen Holmefjord]

Hi,

The memory's data sheet says the following:

• Equal Sectors with 4K byte each or Equal Blocks with 32K/64K byte each

- Any Block can be erased individually

Normally, flash needs to be erased one sector/page/block at a time. You can call the erase function with different offset if you want to erase more pages, or you can set FLASH_SECTOR_SIZE to a multiple of 4096.

Best regards,
Jørgen

[Hubersch]

Thanks it is working. Got another question.

When writing to flash with qspi, i can only write 240 bytes per flash_write(). Is this standard?