nrf52840-read data

[pushparaj]

Hello forum ,

                   In here i will upload my project in zip where i m using w25q64 flash -nrf52840 .i m trying to read data of qspi flash read write and read for an two byte(trying for qspi write and read) .here my pins are P0.19 - clk;p0.16 -chqspi_try.zipip select ;P0.14 for MOSI(IO0);P0.23 for miso(IO1);P0.13 for flash hold and p1.15 - flash write protect ;i have alread add screenshot of output terminal ...pls go through it 

[Einar Thorsrud]

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. 

[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 what to do in next ???have tried ur above suggestion here my screenshot no 35  in below 

i have changed my proj.configure as 

[Einar Thorsrud]

Hi,

pushparaj said:

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

I did not fully understand this. Can you elaborate?

pushparaj said:

i have changed my proj.configure as

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?

[pushparaj]

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