# ch390

**Repository Path**: RT-Thread-Mirror/ch390

## Basic Information

- **Project Name**: ch390
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-07-16
- **Last Updated**: 2026-07-16

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# CH390

WCH CH390 is a 10/100 Mbps SPI Ethernet controller. This package provides an RT-Thread Ethernet driver for CH390 and registers the device through RT-Thread lwIP Ethernet support.

## Requirements

Enable these RT-Thread components before using the package:

- SPI
- PIN
- lwIP
- netdev, if your application uses RT-Thread netdev commands or APIs

The BSP must attach the SPI device before this package probes CH390. Board code should configure the SPI bus, select the CS pin, and call `rt_hw_spi_device_attach()`. The package does not perform board-specific SPI attachment.

## menuconfig

Example package options:

```text
PKG_USING_CH390=y
CH390_SPI_BUS_NAME="spi0"
CH390_SPI_DEVICE_NAME="spi10"
CH390_NETIF_NAME="e0"
CH390_CS_PIN=4
CH390_RST_PIN=-1
CH390_INT_PIN=3
CH390_SPI_MAX_HZ=5000000
CH390_POLL_INTERVAL_MS=20
```

`CH390_SPI_BUS_NAME` and `CH390_CS_PIN` are intended for BSP port code. The package auto-init uses `CH390_SPI_DEVICE_NAME`, `CH390_NETIF_NAME`, `CH390_RST_PIN`, `CH390_INT_PIN`, `CH390_SPI_MAX_HZ`, and `CH390_POLL_INTERVAL_MS`.

## gd32407v-lckfb Wiring

Example wiring for the GD32407V-LCKFB BSP:

| GD32 pin | CH390 signal |
| --- | --- |
| PA3 | INT |
| PA4 | CS |
| PA5 | SCK |
| PA6 | SDO/MISO |
| PA7 | SDI/MOSI |

Use SPI mode CPOL + CPHA, also known as SPI mode 3. The driver configures the CH390 SPI device as `RT_SPI_MODE_3 | RT_SPI_MSB`.

## Static IP Test

One simple validation setup:

- Board IP: `192.168.1.30/24`
- Host IP: `192.168.1.100/24`

After the board boots and CH390 is registered, ping from the host to the board:

```sh
ping 192.168.1.30
```

Then ping from the RT-Thread shell to the host:

```sh
ping 192.168.1.100
```