examples/netpkt: add ethercat test example for robot

[zhhyu7]

Summary

add a simple example to test ethercat's sending and receiving.

Impact

Testing

x86_64 device

[nuttxpr]

[Experimental Bot, please feedback here]

The provided PR description partially meets the NuttX requirements.

Here's what's good:

• Summary: It clearly states the purpose of the PR - adding a test example for EtherCAT.
• Testing: It mentions the build host (x86_64) and implies the target is a device (presumably running NuttX). However, more details are needed (see below).

Here's what needs improvement:

• Summary:

  • What functional part? Be specific about which part of the codebase (e.g., drivers/net/ethercat/) is affected.
  • How does it work? Briefly describe the example's logic - what data is sent/received, how it's verified, etc.
  • Related issues/PRs: Link any relevant issues or PRs in the NuttX or NuttX-Apps repositories.

• Impact: Address ALL impact points, even if the answer is "NO." Provide brief explanations for "YES" answers:

  • New feature? This seems like a "YES" - clarify if it's for users or just for development/testing.
  • User impact? Likely "NO" if it's just a test example, but confirm.
  • Build impact? Does this add any new build dependencies or options?
  • Hardware impact? Does this example require specific hardware or EtherCAT configurations?
  • Documentation impact? Does this example warrant an update or addition to the documentation?
  • Security impact? Unlikely, but analyze if the example handles any sensitive data.
  • Compatibility impact? Unlikely, but analyze if it introduces any changes to the EtherCAT interface.

• Testing:

  • Target: Specify the exact architecture (e.g., ARM Cortex-M4), board, and configuration used for testing.
  • Logs: Instead of placeholder comments, include actual relevant log snippets from before and after the change. These logs should demonstrate the example's functionality.

Recommendation:

Revise the PR description to address the missing information and provide more specific details. A well-structured and informative PR description increases the chances of quick review and merging.

[cederom]

assigning variable length input to const char[4] ?

[zhhyu7]

assigning variable length input to const char[4] ?

Is it modified like this int main(int argc, FAR const char *argv[4])? Done.

[xiaoxiang781216]

why make this change? all.main should have the same prototype
int main(int argc, char *argv[]);