DISK READ FAILURE

RE: DISK READ FAILURE

Naeem Maroof — Fri, 24 Feb 2023 11:17:13 GMT

I think we are not on the same page somehow.

Here in the fat_fs sample source code, I do not see any function call to disk_read().

Neither I find this function in the header / include files.

Can you explain more please or let me know how to produce the error/problem you are facing.

Regards,

Naeem

RE: DISK READ FAILURE

Shariff — Fri, 24 Feb 2023 07:05:15 GMT

Thanks for your reply,

[quote userid="119245" url="~/f/nordic-q-a/96981/disk-read-failure/411638"]I can see that in the disk_read() function you are explicitly setting the busy flag as true, and then calling nrf_blk_dev_read_req() function.[/quote]

I am not setting it by my side rather it is already given in the code in fatfs example.

RE: DISK READ FAILURE

Naeem Maroof — Thu, 23 Feb 2023 11:52:08 GMT

Hi Ajmal,

Thank you for contacting DevZone at NordicSemi.

I can see that in the disk_read() function you are explicitly setting the busy flag as true, and then calling nrf_blk_dev_read_req() function.

This function is used for block read request. In synchronous mode this function will execute the read operation and wait for its completion.

However, in an asynchronous mode the function will only request the operation and return immediately.

Then, the NRF_BLOCK_DEV_EVT_BLK_READ_DONE event will signal that operation has been completed and the specified buffer contains valid data.

You should be checking this event and then resetting the flag.

Regards,

Naeem