Skill

storage

Manages persistent storage in Zephyr RTOS using NVS for wear-leveled settings, Devicetree flash partitions, and runtime layout access. For device data persistence and partition config.

database

infrastructure

npx claudepluginhub beriberikix/zephyr-agent-skills --plugin zephyr-module

Tool Access

This skill uses the workspace's default tool permissions.

Preview

Implement reliable persistent data handling using Zephyr's storage subsystem and flash management utilities.

Supporting Assets

assets/partition_overlay_template.overlayreferences/flash_management.mdreferences/nvs_storage.mdscripts/nvs_id_lint.py

SKILL.md

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Last CommitMar 7, 2026

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Zephyr Storage

Implement reliable persistent data handling using Zephyr's storage subsystem and flash management utilities.

Core Workflows

1. NVS Storage

Utilize Non-Volatile Storage (NVS) for efficient, wear-leveled data persistence.

Reference: nvs_storage.md
Key Tools: nvs_mount(), nvs_read(), nvs_write().

2. Flash Management

Configure and manage flash partitions and hardware page layouts.

Reference: flash_management.md
Key Tools: fixed-partitions, FLASH_MAP, flash_get_page_info_by_offs().

Quick Start (NVS Write)

#include <zephyr/storage/nvs/nvs.h>

void save_data(struct nvs_fs *fs, uint16_t id, void *data, size_t len) {
    nvs_write(fs, id, data, len);
}

Professional Patterns (Reliability)

Settings Integration: Use NVS as the backend for the settings subsystem for a standard key-value configuration experience.
Collision Prevention: Define NVS Entry IDs in a centralized header file to prevent accidental overwrites across modules.
Runtime Layout Checks: Always query the flash controller for page sizes (flash_get_page_layout) rather than assuming hardcoded sector sizes.

Automation Tools

nvs_id_lint.py: Detect duplicate NVS_ID_* macro values across source/header files.

Examples & Templates

partition_overlay_template.overlay: Starter fixed-partitions overlay for app + storage.

Validation Checklist

nvs_mount() succeeds on boot for the configured storage partition.
Written values survive reset and read back with matching length and content.
Partition layout in DTS matches runtime flash-map queries.
Repeated write cycles do not produce mount/read corruption errors.

Resources

References:
- nvs_storage.md: Using NVS for data blobs and integers.
- flash_management.md: Devicetree partitions and page information.
Scripts:
- nvs_id_lint.py: Duplicate ID detector for NVS namespaces.
Assets:
- partition_overlay_template.overlay: Flash partitioning template.