How to perform a factory reset of nrf52840?

RE: How to perform a factory reset of nrf52840?

Martin Lesund — Fri, 10 Aug 2018 12:52:21 GMT

Updated Thread

RE: How to perform a factory reset of nrf52840?

Rajat — Mon, 23 Jul 2018 13:56:57 GMT

Thanks for the reply.

That is already written inside the qspi.h file for the description of function.

All of the above mentioned reasons are not the case for my errors!

RE: How to perform a factory reset of nrf52840?

Martin Lesund — Mon, 23 Jul 2018 13:54:28 GMT

Hi Rajat,

Please check the documentation.

This function configures the peripheral and its interrupts and activates it. During the activation process, the internal clocks are started and the QSPI peripheral tries to read the status byte to read the busy bit. Reading the status byte is done in a simple poll and wait mechanism. If the busy bit is 1, this indicates issues with the external memory device. As a result, nrfx_qspi_initreturns NRFX_ERROR_TIMEOUT.

In case of issues:

Check the connection.
Make sure that the memory device does not perform other operations like erasing or writing.
Check if there is a short circuit.

RE: How to perform a factory reset of nrf52840?

Rajat — Thu, 19 Jul 2018 16:47:32 GMT

Hi martin

Thanks for the answer

But i am following the same process which you just described above .

The error I am getting is NRF_TIMEOUT_ERROR which originates from qspi_init() function.

Example code is running fine but when I integrate this with the BLE uart app code, it throws this error.

What can be the solution to this ?

Thanks for.your time .

RE: How to perform a factory reset of nrf52840?

Martin Lesund — Thu, 19 Jul 2018 14:00:24 GMT

Hi Rajat,

I would recommend that you start with a BLE example application then add the QSPI functionality, by enabling it in "sdk_config.h" as well as including the right files.

You could for example use the "ble_app_uart" example as reference then add code from the "qspi" example application.

Here is how you can debug to find out why your application stops.

If you are going to have BLE capabilities in your application you have to flash with the Softdevice (since it's the BLE stack).

RE: How to perform a factory reset of nrf52840?

Rajat — Wed, 18 Jul 2018 04:15:15 GMT

Hi Martin,

This did solve my problem.

But ,now the question arises HOW TO USE BLE AND EXTERNAL FLASH MEMORY TOGETHER IN ONE SINGLE CODE?

I am trying to write some data to external flash memory that uses QSPI. But as soon i run the code of QSPI. MY program stops and nothing works untill i load it with the softdevice 140 hex file using nrfGoSTudio.

What is the reason for this ?

What can be the solution to this?

Thanks

Rajat!

RE: How to perform a factory reset of nrf52840?

Martin Lesund — Tue, 17 Jul 2018 13:10:06 GMT

Hello Rajat,

Please go through the list in this thread to solve the issue.