NVS
Overview
After the application starts, perform the following 5 operations:
String reading and writing
Binary data reading and writing
Floating point number reading and writing
8-bit integer reading and writing
Use iterator to traverse all data
Requirements
You need to configure COMPONENT_NVS_ENABLED to enable, and the default is enable
There is an nvs partition in the partition table. By default, an nvs partition already exists in the partition table
Building and flashing
Sample location: examples/storage/nvs
For operations such as compiling and burning, please refer to: Quick Start Guide
Running Result
Upon successful execution, the following logs will be output.
[I] (5) main: ver: 2.1.3dev build at Nov 6 2024 14:39:57
[I] (10) main: boot reason 0
[I] (13) main: heap size 272712(266.32KB)
[I] (17) main: flash size 0x200000(2MB)
[I] (20) exam_nvs: NVS example succeeds in running.
[I] (25) exam_nvs: open nvs, group=user err=0
[I] (30) exam_nvs: Read str:123456
[I] (33) exam_nvs: dump [binary]
0x0000 01 02 03 04 05 .....
[I] (42) exam_nvs: Read float=1.234500
[I] (46) exam_nvs: Read I8=-120
[I] (49) exam_nvs: Start iterator.
[I] (52) exam_nvs: key_str,len=7
[I] (55) exam_nvs: key_bin,len=5
[I] (58) exam_nvs: key_float,len=8
[I] (61) exam_nvs: key_I8,len=1
[I] (64) exam_nvs: NVS example end.