nrf52840-read data

RE: nrf52840-read data

pushparaj — Fri, 28 Mar 2025 05:21:33 GMT

now i can able to write and read in flash ......thank yu sir ....

RE: nrf52840-read data

Einar Thorsrud — Thu, 27 Mar 2025 13:23:46 GMT

Hi,

I used your project but it does not build on my end. Can you share exactly which files or project I should use and how I shold build it? (please also check if you have any modifications in other SDK that is needed, and if so, share those as well)

RE: nrf52840-read data

pushparaj — Thu, 27 Mar 2025 10:48:37 GMT

the above txt file is the default dts file in version qspi zephyr v 2.7.0 using MX25R64

RE: nrf52840-read data

pushparaj — Thu, 27 Mar 2025 10:41:01 GMT

i will upload the file that is default .dts file in before i musing w25q64 in .dts file used MX25r64devzone.nordicsemi.com/.../dts.txt

RE: nrf52840-read data

pushparaj — Thu, 27 Mar 2025 10:35:45 GMT

i have already upload my project as qspi_try.zip in above kindly pls go through in above

RE: nrf52840-read data

Einar Thorsrud — Thu, 27 Mar 2025 10:26:26 GMT

Hi,

The JEDEC ID of w25q64 should be [ef 40 17], but I understand you found that. As you are able to read the ID other communication/read/write should also be possible. I do not have that exact flash to test with, but I have a w25q16 that I intended to test with some modifications, but I am not able to build your projcet. Can you share a project that builds in the SDK without any other modifications, or alternatively, also share any changes you have done to the SDK (perhaps device tree files) as well? Along with instructions on how to build and test?

RE: nrf52840-read data

pushparaj — Wed, 26 Mar 2025 05:21:07 GMT

i can able to read my flash w25q64 jedec no but erase ,write and read operation is failed in nordic version 2.7 version ....devzone.nordicsemi.com/.../4477.qspi_5F00_try_5F00_jedec.zip

RE: nrf52840-read data

Einar Thorsrud — Mon, 24 Mar 2025 14:50:45 GMT

Hi,

[quote user="pushparaj"]where i have changed my main.c to make the write operation in loop for checking propose in scope where clock pulse is not generated and hence cs pin isnt not in low[/quote]

I did not fully understand this. Can you elaborate?

[quote user="pushparaj"]i have changed my proj.configure as[/quote]

It would be intersting to see the full long. Can you up the RTT buffer as well, by adding CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=8192?

RE: nrf52840-read data

pushparaj — Mon, 24 Mar 2025 06:02:35 GMT

where i have changed my main.c to make the write operation in loop for checking propose in scope where clock pulse is not generated and hence cs pin isnt not in low what to do in next ???have tried ur above suggestion here my screenshot no 35 in below

i have changed my proj.configure as

RE: nrf52840-read data

Einar Thorsrud — Fri, 21 Mar 2025 14:25:14 GMT

Hi,

What is the state of the hold and write protect pins? Also, is the external flash device connected via long wires or somethhing that could affect signal integrity? (I ask because things look semingly good to me, and I would expect this should work).

PS: I would incerase the RTT buffer size so that we see the whole log.

RE: nrf52840-read data

pushparaj — Thu, 20 Mar 2025 06:11:32 GMT

This screenshot is for erasing flash result to be 0*0

RE: nrf52840-read data

pushparaj — Thu, 20 Mar 2025 06:01:12 GMT

when i tried to erase the flash even also i didnt get FF FF on that time also i m getting 00 00

RE: nrf52840-read data

pushparaj — Thu, 20 Mar 2025 05:03:59 GMT

here i tried to write and read in flash but i received cc in terminal ....pls check my queries