QSPI read fail.

[Justin_Yeh]

Hi Sir 

I try to write/read/earse any address with length 32. 

but some bytes shows zero "0x0" when I use , it should be 0xff after erasing...

Do you know what's the problem ? Thanks.

[00:00:30.151,791] <info> app: 0xFF
[00:00:30.151,798] <info> app: 0x0  //??
[00:00:30.151,804] <info> app: 0x0  //??
[00:00:30.151,810] <info> app: 0xFF
[00:00:30.151,816] <info> app: 0xFF
[00:00:30.151,822] <info> app: 0xFF
[00:00:30.151,829] <info> app: 0xFF
[00:00:30.151,835] <info> app: 0xFF
[00:00:30.151,841] <info> app: 0xFF
[00:00:30.151,847] <info> app: 0xFF
[00:00:30.151,856] <info> app: 0xFF
[00:00:30.151,862] <info> app: 0xFF
[00:00:30.151,868] <info> app: 0xFF
[00:00:30.151,874] <info> app: 0xFF
[00:00:30.151,881] <info> app: 0xFF
[00:00:30.151,887] <info> app: 0xFF
[00:00:30.151,893] <info> app: 0xFF
[00:00:30.151,899] <info> app:

[00:00:30.151,905] <info> app: 0xFF
[00:00:30.151,911] <info> app: 0xFF
[00:00:30.151,918] <info> app: 0xFF
[00:00:30.151,924] <info> app: 0xFF
[00:00:30.151,930] <info> app: 0xFF
[00:00:30.151,936] <info> app: 0xFF
[00:00:30.151,943] <info> app: 0xFF
[00:00:30.151,949] <info> app: 0xFF
[00:00:30.151,955] <info> app: 0xFF
[00:00:30.151,961] <info> app: 0xFF
[00:00:30.151,967] <info> app: 0xFF
[00:00:30.151,974] <info> app: 0xFF
[00:00:30.151,980] <info> app: 0x0  //?
[00:00:30.151,986] <info> app: 0x0  //? 
[00:00:30.151,992] <info> app: 0x0  //?

[haakonsh]

We need to verify that the content of the external flash has changed. Can you read out and verify the the content of the external memory with nrfjprog after you have erased it? 

[Justin_Yeh]

Could you teach me how to verify content by nrfprog ? Thanks.

[Justin_Yeh]

please give me your mail box, I send file to you.

[Justin_Yeh]

Hi haakonsh

Do you find any issue on my file ? Thanks.

[haakonsh]

I want to replicate your issue on my end. I need a detailed description of your process and the file generated by nrfjprog when reading the ext flash. 

[Justin_Yeh]

my test steps...

uart_cli:~$ extflash init
done
[00:00:20.095,334] <info> app: QSPI init started.
uart_cli:~$ extflash earse 0
done
uart_cli:~$ extflash read 0 32
0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF uart_cli0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF uart_cli0xFF 0xFF 0xFF 0x0 0x0 0x0 
done

And the nrfjprog log.

:020000041200E8
:10000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00
:10001000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0
:10002000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE0
:10003000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD0

.....

[Justin_Yeh]

Case 2 

uart_cli:~$ extflash earse 0
done
uart_cli:~$ extflash write 0 4
done
[00:00:22.271,534] <info> app: test pattern is

0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 uart_cli 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5
0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 uart_cli 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5
done
uart_cli:~$ extflash read 0 32
0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 uart_cli 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5
0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 0xA5 uart_cli 0xA5 0xA5 0xA5 0x0 0x0 0x0
done

---------------------------------------

the nrfjprog log.

:020000041200E8
:10000000000000A5A5A5A5A5A5A5A5A5A5A5A5A58F
:10001000A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A590
:10002000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE0
:10003000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD0

......