Flash storage, unable to write and read 1024 and 2048 bytes

[Sunil vignesh]

Hi, I am testing the flash storage of nrf52840 with NVS example from NCS v1.4.2

i have run the example code successfully. from the example code i have changed the

uint8_t longarray[128]; to uint8_t longarray[1024];

memset(&longarray , 'A',sizeof(longarray));

output log is

*** Booting Zephyr OS build v2.4.0-ncs2  ***

 rd - ID : 1 ; D :  ; L:16
No address found, adding 192.168.1.1 at id 1
 
wd - ID : 1 ; D : 192.168.1.1 ; L:12

write : O:f8000, D:192.168.1.1, L:12
write : O:f8ff0, D:, L:8
 rd - ID : 2 ; D : è ; L:8
No key found, adding it at id 2
 
wd - ID : 2 ; D : ÿþýüûúùø ; L:8

write : O:f800c, D:ÿþýüûúùø, L:8
write : O:f8fe8, D:, L:8
 rd - ID : 3 ; D :  ; L:4
No Reboot counter found, adding it at id 3
 
wd - ID : 3 ; D :  ; L:4

write : O:f8014, D:, L:4
write : O:f8fe0, D:, L:8
 rd - ID : 4 ; D : 192.168.1.1 ; L:16
Id: 4 not found, adding it
 
wd - ID : 4 ; D : DATA ; L:5

write : O:f8018, D:DATA, L:4
write : O:f8fd8, D:, L:8
 rd - ID : 5 ; D : Pa ; L:1024
Longarray not found, adding it as id 5

Query is

1. How to properly write and read the 1024 bytes,2048 bytes

2. I need to work in ble_his_keyboard example. where flash storage is initialized for pairing data storage. I need to store the sensor data . how to interface flash write into the main application of ble_hid_keyboard

[Simonr]

Hi

Sorry about the late reply, I've been out of office for a couple of days.

Again, please explain what you mean about "I don't think so its bootloader page". So it's the storage_partition page that gets moved once you add the bootloader to your project, correct? Can you tell me what addresses the bootloader is using and what addresses it is supposed to use in your application?

Best regards,

Simon

[Sunil vignesh]

Hi Simon,

What is partition manager does. and i found doc in this link. pm_static.yml that defines the address and size of the stacks if so. is it advisable to change the address or add new stack in it

[Sunil vignesh]

the storage_partition you are saying is this partition manager ?

how to work with custom memory layout . in the sense of adjusting address start and its size