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tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Connectivity Ip by tomevault-io — Agent Skill

Name: Connectivity Ip
Author: tomevault-io

Connectivity Ip

IP networking fundamentals for Zephyr RTOS. Covers IoT protocol selection (LwM2M, CoAP, MQTT), IP stack configuration and trimming (IPv4/IPv6, UDP/TCP), and professional SDK integration as Zephyr modules using West manifests. Trigger when building cloud-connected applications, optimizing network memory usage, or integrating external cloud SDKs. Use when this capability is needed.

tomevault-io cbf6dfb 2 files · 3.9 KB Updated Sep 17, 2026

File contents

Zephyr Connectivity: IP Networking

Build memory-efficient, cloud-connected applications using Zephyr's modular IP stack and industry-standard IoT protocols.

Core Workflows

1. Protocol Selection

Choose the right protocol (LwM2M, CoAP, MQTT) based on your device's power and management needs.

Reference: protocol_selection.md
Key Tools: CONFIG_COAP, CONFIG_LWM2M, CONFIG_MQTT_LIB.

2. IP Stack Configuration

Tune the networking stack to save Flash and RAM while ensuring reliable communication.

Reference: ip_stack_config.md
Key Tools: CONFIG_NET_IPV4, CONFIG_NET_BUF_RX_COUNT, DNS resolver.

3. SDK & Module Integration

Integrate external cloud SDKs and libraries as first-class Zephyr modules.

Reference: sdk_module_integration.md
Key Tools: west.yml, zephyr/module.yml, name-allowlist.

Quick Start (Kconfig for CoAP)

# Minimal stack for CoAP over UDP
CONFIG_NETWORKING=y
CONFIG_NET_UDP=y
CONFIG_NET_IPV4=y
CONFIG_COAP=y
CONFIG_DNS_RESOLVER=y

Professional Patterns (Cloud Connectivity)

Extreme Trimming: Disable TCP and IPv6 if not strictly required to reclaim 10KB+ of RAM.
Manifest Control: Use an allow-list in your west.yml to prevent cloning hundreds of megabytes of unused vendor modules.
Async DNS: Use the asynchronous DNS resolver to prevent blocking the main application thread during host lookup.

Automation Tools

net_config_audit.py: Audit prj.conf networking flags for protocol/profile consistency.

Examples & Templates

prj_minimal_coap.conf: Starter footprint-trimmed CoAP-over-UDP configuration.

Validation Checklist

Device obtains network connectivity and resolves DNS for the configured backend.
Selected protocol path (CoAP, MQTT, or LwM2M) completes connect and message exchange.
Disabled stack features (for example IPv6 or TCP) are absent from final .config when trimmed.
RAM/Flash footprint meets the expected optimization target after stack tuning.

Resources

References:
- protocol_selection.md: LwM2M vs CoAP vs MQTT.
- ip_stack_config.md: Optimizing buffers and disabling unused protocols.
- sdk_module_integration.md: West manifest management and SDK modules.
Scripts:
- net_config_audit.py: Quick audit helper for IP stack Kconfig flags.
Assets:
- prj_minimal_coap.conf: Baseline minimal IP profile template.

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: connectivity-ipdescription: IP networking fundamentals for Zephyr RTOS. Covers IoT protocol selection (LwM2M, CoAP, MQTT), IP stack configuration and trimming (IPv4/IPv6, UDP/TCP), and professional SDK integration as Zephyr modules using West manifests. Trigger when building cloud-connected applications, optimizing network memory usage, or integrating external cloud SDKs. Use when this capability is needed.---# Zephyr Connectivity: IP NetworkingBuild memory-efficient, cloud-connected applications using Zephyr's modular IP stack and industry-standard IoT protocols.## Core Workflows### 1. Protocol SelectionChoose the right protocol (LwM2M, CoAP, MQTT) based on your device's power and management needs.- **Reference**: **[protocol_selection.md](references/protocol_selection.md)**- **Key Tools**: `CONFIG_COAP`, `CONFIG_LWM2M`, `CONFIG_MQTT_LIB`.### 2. IP Stack ConfigurationTune the networking stack to save Flash and RAM while ensuring reliable communication.- **Reference**: **[ip_stack_config.md](references/ip_stack_config.md)**- **Key Tools**: `CONFIG_NET_IPV4`, `CONFIG_NET_BUF_RX_COUNT`, DNS resolver.### 3. SDK & Module IntegrationIntegrate external cloud SDKs and libraries as first-class Zephyr modules.- **Reference**: **[sdk_module_integration.md](references/sdk_module_integration.md)**- **Key Tools**: `west.yml`, `zephyr/module.yml`, `name-allowlist`.## Quick Start (Kconfig for CoAP)```kconfig# Minimal stack for CoAP over UDPCONFIG_NETWORKING=yCONFIG_NET_UDP=yCONFIG_NET_IPV4=yCONFIG_COAP=yCONFIG_DNS_RESOLVER=y```## Professional Patterns (Cloud Connectivity)- **Extreme Trimming**: Disable TCP and IPv6 if not strictly required to reclaim 10KB+ of RAM.- **Manifest Control**: Use an `allow-list` in your `west.yml` to prevent cloning hundreds of megabytes of unused vendor modules.- **Async DNS**: Use the asynchronous DNS resolver to prevent blocking the main application thread during host lookup.## Automation Tools- **[net_config_audit.py](scripts/net_config_audit.py)**: Audit `prj.conf` networking flags for protocol/profile consistency.## Examples & Templates- **[prj_minimal_coap.conf](assets/prj_minimal_coap.conf)**: Starter footprint-trimmed CoAP-over-UDP configuration.## Validation Checklist- [ ] Device obtains network connectivity and resolves DNS for the configured backend.- [ ] Selected protocol path (CoAP, MQTT, or LwM2M) completes connect and message exchange.- [ ] Disabled stack features (for example IPv6 or TCP) are absent from final `.config` when trimmed.- [ ] RAM/Flash footprint meets the expected optimization target after stack tuning.## Resources- **[References](references/)**: - `protocol_selection.md`: LwM2M vs CoAP vs MQTT. - `ip_stack_config.md`: Optimizing buffers and disabling unused protocols. - `sdk_module_integration.md`: West manifest management and SDK modules.- **[Scripts](scripts/)**: - `net_config_audit.py`: Quick audit helper for IP stack Kconfig flags.- **[Assets](assets/)**: - `prj_minimal_coap.conf`: Baseline minimal IP profile template.---> Converted and distributed by [TomeVault](https://tomevault.io/claim/beriberikix) — claim your Tome and manage your conversions.

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