Status bit for sd_flash_write()

[tomhogenkamp]

Hello,

I am using the sd_flash_write function. If I use this function without the nrf_delay_ms() function (see code below) the data is not being written.

	sd_flash_write((uint32_t*)addr, (uint32_t*) &data, 1);

	nrf_delay_ms(20);

Is there a status bit I can poll or is there an another solution to use this function without the delay?

Thanks.

[shibshab]

sd_flash_write will give its result in a system event.

To get this event you need to register a system event handler by calling

err_code = softdevice_sys_evt_handler_set(m_sys_evt_dispatch);
APP_ERROR_CHECK(err_code);

Once you get the NRF_EVT_FLASH_OPERATION_SUCCESS event, the data has been written.

[Susheel Nuguru]

accepting this answer as the author was inactive longer than expected

[Paul]

I have the exact same problem.

[Paul]

I don't think this is the answer. Yes, it is a solution to get the flash result using call backs. But the problem here I believe is if we remove the delay and let CPU do something else while waiting for that system event, the write will still fail. What is the proper way to use sd_flash_write? Write and dead loop waiting for the callback to get the event? Thanks

Paul

[Paul]

I just checked pstorage.c too see how it dealt with the sd_flash_write. It doesn't wait, just checks the retval and moves on. Not sure why tom and I are having this problem. I am using SD310 and SD210, both have the same issue. I had to put delays after write. Thanks Paul