Zephyr flash_erase(w25q32jv@0, 524288, 4096) faild -19

[snowuyl]

I use Zephyr flash_erase() to erase Winbond W25Q32JV NOR flash. But I flash_erase() return error code -19. What is meaning of error code -19? And how to fix this issue?

The following is code to call flash_erase().

int flashNorEraseData(const off_t offset, const size_t len) {
    if (!flashNorGetInitialzed()) {
        return ERROR_NOR_UNINITIALIZED;
    }

    const int ret = flash_erase(_gFlashDev, offset, len);
    if (ret < 0) {
        printk("flash_erase(%s, %ld, %u) faild %d\n", _gFlashDev->name, offset, len, ret);
        return ERROR_FSTORAGE_ERASE_FAIL;
    }

    return 0;
}

The following are log messages.

*** Booting Zephyr OS build v3.2.99-ncs2 *
jedec-id = [ef 40 16]
_gDensity=4194304
flash_erase(w25q32jv@0, 524288, 4096) faild -19
Erasing from 524288 to 528383 failed

[Simonr]

Hi

Error message 19 means that there is no device connected or that the device doesn't support the operation you're trying for. My guess is that you're trying to do a flash erase before the flash device is initialized and mounted, so the nRF can't find the flash device when you try calling this function.

Best regards,

Simon

[snowuyl]

But it is okay for erasing from offset 0 to 524287. Do I need to add k_usleep() between two flash_erase() calling? Besides do you have sample code for flash device initializing and mounted? 

[Simonr]

snowuyl said:

But it is okay for erasing from offset 0 to 524287.

I think this is the internal flash of the nRF52832 you're erasing, not the external one, correct? We have both file system samples and the JEDEC SPI-NOR sample for using QSPI and external flash devices.

Best regards,

Simon

[snowuyl]

I use flash_erase() api to erase from 0 524287. Do you mean flash_erase() can also used to erase internal flash?