About

This repository contains a Wiznet W5100 driver for Zephyr RTOS. It's heavilly based on the existing W5500 driver with just minor changes in memory adressing, SPI frame structure and register adressing.

Usage

1. Copy the eth_w5100_priv.h, eth_w5100.c and Kconfig.w5100 files into the directory [zephyr root]/drivers/ethernet
2. In the same directory, add the line source "drivers/ethernet/Kconfig.w5100" into the Kconfig file
3. In the same directory, add the line zephyr_library_sources_ifdef(CONFIG_ETH_W5100 eth_w5100.c) into the CMakeLists.txt file
4. Copy the wiznet,w5100.yaml file into the directory [zephyr root]/dts/bindings/ethernet

Now the driver should be fully usable in your project. Example of binding the driver in the dts file of your board (nRF5340 is used in this example).

&spi4 {
    compatible = "nordic,nrf-spim";
    status = "okay";
	pinctrl-0 = <&spi4_default>;
	pinctrl-1 = <&spi4_sleep>;
	pinctrl-names = "default", "sleep";
    cs-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
    w5100: w5100@0 {
        compatible = "wiznet,w5100";
        reg = <0x0>;
        spi-max-frequency = <1000000>;
        int-gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
        reset-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
    };
};