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 

From the error message it seems like you haven't provided enough memory in the main application to allow arrays that are this large. Have you tried I.E. increasing the call stack?

2. Why do you need writes this large for a keyboard application which I'd imagine will only send small amounts of data at a time? To add flash storage, check out I.E. the Flash Shell sample here in the Zephyr part of NCS.

Best regards,

Simon

[Sunil vignesh]

How to increase Call Stack

[Sunil vignesh]

I have added

CONFIG_MAIN_STACK_SIZE=4096

but when i add FOTA configuration in prj.conf

'PM_PM_PM_sensor_ID_LABEL_ADDRESS' undeclared (first use in this function)

i have created storage partition like this in .dts file

/*
		 * Storage partition will be used by FCB/LittleFS/NVS
		 * if enabled.
		 */
		storage_partition: partition@f8000 {
			label = "storage";
			reg = <0x000f8000 0x00003000>;
		};
		storage_partition1: partition@f4000 {
			label = "sensor";
			reg = <0x000f4000 0x00003000>;
		};

it perfectly works without FOTA Bootloader

but when enabling FOTA bootloader . it doesn't work through Error and also the peer address address starts from 0xFE000 instead of 0xF8000