Error using USB MSC example with external QSPI Flash W25Q128FV

[Anantha Keshava]

I'm attempting to use the USB MSC example (from nRF5 SDK v15.0.0) with external flash chip replaced with Winbond W25Q128FV and I see the following logs:

[00:00:00.000,000] <info> app: Initializing disk 0 (QSPI)...
[00:00:00.000,000] <error> app: Disk initialization failed.
[00:00:00.000,000] <info> app: USBD MSC example started.
[00:00:00.000,000] <info> app: USB power detected
[00:00:00.000,000] <info> app: Un-initializing disk 0 (QSPI)...
[00:00:00.000,000] <info> app: USB ready

I was able to use the QSPI example with the same flash part and it worked correctly when the READOC and WRITEOC were both set to 0.

Please help in finding if I'm missing anything here.

[JeffW]

Anantha,

In nrf_serial_flash_params_t.c:
Replace read ID from MXIC MX25R6435F to the appropriate ID of the W25Q128FV.

For reference, here is the ID for the winbond W25Q64JV:

static const nrf_serial_flash_params_t m_sflash_params[] = {
    {    /*MXIC MX25R6435F*/
//        .read_id = { 0xC2, 0x28, 0x17 },
        /*Winbond W25Q64JV*/
        .read_id = { 0xEF, 0x40, 0x17 },
        .capabilities = 0x00,
        .size = 8 * 1024 * 1024,
        .erase_size = 4 * 1024,
        .program_size = 256,
    }
};

[Anantha Keshava]

Thanks or the quick help JeffW, For anyone using Winbond W25Q128FV, The JEDEC ID is

.read_id = { 0xEF, 0x40, 0x18 },

[JeffW]

No problem.
As a suggestion, also recently reported is a problem with initialization failing after editing a file on the pc.
See: https://devzone.nordicsemi.com/f/nordic-q-a/36654/usbd_msd-disk-initialization-fails-in-usb-unplug-with-sdk15-0/141345#141345

There is a fix for that problem in that thread.