matiamic opened a new issue, #16158:
URL: https://github.com/apache/nuttx/issues/16158
### Description
Hello, over the course of GSoC 2025 I would like to implement support for
**10BASE-T1S** and **10BASE-T1L** Ethernet.
Both 10BASE-T1S and 10BASE-T1L device types are designed to be used on the
edge of the network (sensors, front-end interface, actuators etc.). This is the
same space where NuttX shines. Both device types use **single unshielded
twisted pair** as a medium. Speed is 10 Mbit/s.
### 10BASE-T1x device types
- **10BASE-T1S**: shorter segment
- **two mutually exclusive options**
- full-duplex over up to at least 15 m segment
- half-duplex multidrop with support for up to at least 8 devices on
the up to at least 25 m of common mixing segment (NCV7410)
- PLCA - Physical Layer Collision Avoidance, an alternative to the
classic CSMA/CD, improved latency and throughput, more deterministic
- **10BASE-T1L**: full-duplex Ethernet over up to at least 1000 m segment
### **[Open Alliance 10BASE-T1x MAC-PHY Serial Interface
Specification](https://opensig.org/wp-content/uploads/2023/12/OPEN_Alliance_10BASET1x_MAC-PHY_Serial_Interface_V1.1.pdf)**
There is a range of MAC-PHY devices that follow Open Alliance 10BASE-T1x
MAC-PHY Serial Interface specification. These MAC-PHYs expose SPI as an
interface to the host for packet exchange and configuration. The protocol is
supported by a handful of devices from various vendors. To list a few: Onsemi
NCV7410 (10BASE-T1S), Microchip LAN8650 (10BASE-T1S), Analog Devices ADIN1110
(10BASE-T1L). Thanks to the SPI interface and a common protocol, many boards
supported by NuttX could be enriched by 10BASE-T1x connectivity and shared
logic can be implemented, so the porting of a new device following the spec is
simple.
### Proposal
**I propose to implement:**
- the common logic for Open Alliance 10BASE-T1x MAC-PHY Serial Protocol
- driver for Onsemi NCV7410 based on the shared logic
- support for PLCA configuration
- support of the driver for ESP32-C6 and an ARM-based platform
_**I would love to read about what you think, so please comment and share
your suggestions.**_ MM
### Verification
- [x] I have verified before submitting the report.
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