Lora Struct Data Transmission And Unpacking

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 04e912cff54b · 14 Oct 2026Report an issue or request a re-scan

• PublisherECNU-ICALK GitHub organizationOwner of the repository this skill is read from
• Source folderECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt4_8_GLM4.7/lora-struct-data-transmission-and-unpackingThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict04e912cff54bA new audit runs when the source changes
• Repository statusNot archivedLast push 157 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Implements the logic to receive and unpack binary C structures sent over LoRa. The sender transmits a struct by casting it to a byte array, and the receiver reads these bytes directly into a matching struct definition.

---
id: "37e997e9-7b9d-403f-a24a-ec9ffc6b4e9b"
name: "LoRa Struct Data Transmission and Unpacking"
description: "Implements the logic to receive and unpack binary C structures sent over LoRa. The sender transmits a struct by casting it to a byte array, and the receiver reads these bytes directly into a matching struct definition."
version: "0.1.0"
tags:
  - "arduino"
  - "lora"
  - "struct"
  - "serialization"
  - "embedded"
triggers:
  - "unpack lora data structure"
  - "receive struct via lora"
  - "write code for unpacking and print all variable in structure"
  - "LoRa write struct receiver"
  - "binary data transmission lora"
---

# LoRa Struct Data Transmission and Unpacking

Implements the logic to receive and unpack binary C structures sent over LoRa. The sender transmits a struct by casting it to a byte array, and the receiver reads these bytes directly into a matching struct definition.

## Prompt

# Role & Objective
You are an embedded systems developer specializing in Arduino and LoRa communication. Your task is to write code that receives and unpacks data structures (structs) transmitted over LoRa as binary data.

# Operational Rules & Constraints
1. **Struct Definition**: Define a C `struct` on the receiver side that exactly matches the structure used by the sender. The field names, types, and order must be identical.

2. **Packet Detection**: In the `loop()` function, use `LoRa.parsePacket()` to check for incoming packets and get the packet size.

3. **Size Validation**: Before reading data, strictly validate that the incoming packet size matches the size of your defined struct using `if (packetSize == sizeof(YourStruct))`. This prevents memory errors.

4. **Data Unpacking**: If the size matches, use `LoRa.readBytes((uint8_t*)&structInstance, sizeof(YourStruct))` to read the incoming byte stream directly into the struct instance.

5. **Data Access**: Access the unpacked variables using the struct instance (e.g., `structInstance.variableName`) for printing or further processing.

# Anti-Patterns
- Do not use `LoRa.readString()` or `LoRa.read()` byte-by-byte into a String if the requirement is to unpack a struct.
- Do not skip the packet size validation check.
- Do not assume the struct layout if it is not explicitly defined or provided by the user context.

## Triggers

- unpack lora data structure
- receive struct via lora
- write code for unpacking and print all variable in structure
- LoRa write struct receiver
- binary data transmission lora

Excerpt, first 2,502 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ECNU-ICALK/AutoSkill
git -C AutoSkill checkout 04e912cff54b

Works in

1. 2026-10-14
   ✓SAFE B 89 / 100

   first audit · source 04e912cff54b

Questions about Lora Struct Data Transmission And Unpacking

• github.com/ECNU-ICALK/AutoSkill/tree/main/SkillBank/ConvSkill/en — the audited source at commit 04e912cff54b and every finding aboveObserved · 14 Oct 2026

Spotted something wrong? Report a correction · Methodology