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esp-idf/examples/ethernet/basic/components/ethernet_init/ethernet_init.c

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/*
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include "ethernet_init.h"
#include "esp_log.h"
#include "esp_check.h"
#include "esp_mac.h"
#include "driver/gpio.h"
#include "sdkconfig.h"
#if CONFIG_ETH_USE_SPI_ETHERNET
#include "driver/spi_master.h"
#endif // CONFIG_ETH_USE_SPI_ETHERNET
static const char *TAG = "example_eth_init";
#if CONFIG_EXAMPLE_SPI_ETHERNETS_NUM
#define SPI_ETHERNETS_NUM CONFIG_EXAMPLE_SPI_ETHERNETS_NUM
#else
#define SPI_ETHERNETS_NUM 0
#endif
#if CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET
#define INTERNAL_ETHERNETS_NUM 1
#else
#define INTERNAL_ETHERNETS_NUM 0
#endif
#define INIT_SPI_ETH_MODULE_CONFIG(eth_module_config, num) \
do { \
eth_module_config[num].spi_cs_gpio = CONFIG_EXAMPLE_ETH_SPI_CS ##num## _GPIO; \
eth_module_config[num].int_gpio = CONFIG_EXAMPLE_ETH_SPI_INT ##num## _GPIO; \
eth_module_config[num].polling_ms = CONFIG_EXAMPLE_ETH_SPI_POLLING ##num## _MS; \
eth_module_config[num].phy_reset_gpio = CONFIG_EXAMPLE_ETH_SPI_PHY_RST ##num## _GPIO; \
eth_module_config[num].phy_addr = CONFIG_EXAMPLE_ETH_SPI_PHY_ADDR ##num; \
} while(0)
typedef struct {
uint8_t spi_cs_gpio;
int8_t int_gpio;
uint32_t polling_ms;
int8_t phy_reset_gpio;
uint8_t phy_addr;
uint8_t *mac_addr;
}spi_eth_module_config_t;
#if CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET
/**
* @brief Internal ESP32 Ethernet initialization
*
* @param[out] mac_out optionally returns Ethernet MAC object
* @param[out] phy_out optionally returns Ethernet PHY object
* @return
* - esp_eth_handle_t if init succeeded
* - NULL if init failed
*/
static esp_eth_handle_t eth_init_internal(esp_eth_mac_t **mac_out, esp_eth_phy_t **phy_out)
{
esp_eth_handle_t ret = NULL;
// Init common MAC and PHY configs to default
eth_mac_config_t mac_config = ETH_MAC_DEFAULT_CONFIG();
eth_phy_config_t phy_config = ETH_PHY_DEFAULT_CONFIG();
// Update PHY config based on board specific configuration
phy_config.phy_addr = CONFIG_EXAMPLE_ETH_PHY_ADDR;
phy_config.reset_gpio_num = CONFIG_EXAMPLE_ETH_PHY_RST_GPIO;
// Init vendor specific MAC config to default
eth_esp32_emac_config_t esp32_emac_config = ETH_ESP32_EMAC_DEFAULT_CONFIG();
// Update vendor specific MAC config based on board configuration
esp32_emac_config.smi_mdc_gpio_num = CONFIG_EXAMPLE_ETH_MDC_GPIO;
esp32_emac_config.smi_mdio_gpio_num = CONFIG_EXAMPLE_ETH_MDIO_GPIO;
#if CONFIG_EXAMPLE_USE_SPI_ETHERNET
// The DMA is shared resource between EMAC and the SPI. Therefore, adjust
// EMAC DMA burst length when SPI Ethernet is used along with EMAC.
esp32_emac_config.dma_burst_len = ETH_DMA_BURST_LEN_4;
#endif // CONFIG_EXAMPLE_USE_SPI_ETHERNET
// Create new ESP32 Ethernet MAC instance
esp_eth_mac_t *mac = esp_eth_mac_new_esp32(&esp32_emac_config, &mac_config);
// Create new PHY instance based on board configuration
#if CONFIG_EXAMPLE_ETH_PHY_IP101
esp_eth_phy_t *phy = esp_eth_phy_new_ip101(&phy_config);
#elif CONFIG_EXAMPLE_ETH_PHY_RTL8201
esp_eth_phy_t *phy = esp_eth_phy_new_rtl8201(&phy_config);
#elif CONFIG_EXAMPLE_ETH_PHY_LAN87XX
esp_eth_phy_t *phy = esp_eth_phy_new_lan87xx(&phy_config);
#elif CONFIG_EXAMPLE_ETH_PHY_DP83848
esp_eth_phy_t *phy = esp_eth_phy_new_dp83848(&phy_config);
#elif CONFIG_EXAMPLE_ETH_PHY_KSZ80XX
esp_eth_phy_t *phy = esp_eth_phy_new_ksz80xx(&phy_config);
#endif
// Init Ethernet driver to default and install it
esp_eth_handle_t eth_handle = NULL;
esp_eth_config_t config = ETH_DEFAULT_CONFIG(mac, phy);
ESP_GOTO_ON_FALSE(esp_eth_driver_install(&config, &eth_handle) == ESP_OK, NULL,
err, TAG, "Ethernet driver install failed");
if (mac_out != NULL) {
*mac_out = mac;
}
if (phy_out != NULL) {
*phy_out = phy;
}
return eth_handle;
err:
if (eth_handle != NULL) {
esp_eth_driver_uninstall(eth_handle);
}
if (mac != NULL) {
mac->del(mac);
}
if (phy != NULL) {
phy->del(phy);
}
return ret;
}
#endif // CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET
#if CONFIG_EXAMPLE_USE_SPI_ETHERNET
/**
* @brief SPI bus initialization (to be used by Ethernet SPI modules)
*
* @return
* - ESP_OK on success
*/
static esp_err_t spi_bus_init(void)
{
esp_err_t ret = ESP_OK;
// Install GPIO ISR handler to be able to service SPI Eth modules interrupts
ret = gpio_install_isr_service(0);
if (ret != ESP_OK) {
if (ret == ESP_ERR_INVALID_STATE) {
ESP_LOGW(TAG, "GPIO ISR handler has been already installed");
ret = ESP_OK; // ISR handler has been already installed so no issues
} else {
ESP_LOGE(TAG, "GPIO ISR handler install failed");
goto err;
}
}
// Init SPI bus
spi_bus_config_t buscfg = {
.miso_io_num = CONFIG_EXAMPLE_ETH_SPI_MISO_GPIO,
.mosi_io_num = CONFIG_EXAMPLE_ETH_SPI_MOSI_GPIO,
.sclk_io_num = CONFIG_EXAMPLE_ETH_SPI_SCLK_GPIO,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
};
ESP_GOTO_ON_ERROR(spi_bus_initialize(CONFIG_EXAMPLE_ETH_SPI_HOST, &buscfg, SPI_DMA_CH_AUTO),
err, TAG, "SPI host #%d init failed", CONFIG_EXAMPLE_ETH_SPI_HOST);
err:
return ret;
}
/**
* @brief Ethernet SPI modules initialization
*
* @param[in] spi_eth_module_config specific SPI Ethernet module configuration
* @param[out] mac_out optionally returns Ethernet MAC object
* @param[out] phy_out optionally returns Ethernet PHY object
* @return
* - esp_eth_handle_t if init succeeded
* - NULL if init failed
*/
static esp_eth_handle_t eth_init_spi(spi_eth_module_config_t *spi_eth_module_config, esp_eth_mac_t **mac_out, esp_eth_phy_t **phy_out)
{
esp_eth_handle_t ret = NULL;
// Init common MAC and PHY configs to default
eth_mac_config_t mac_config = ETH_MAC_DEFAULT_CONFIG();
eth_phy_config_t phy_config = ETH_PHY_DEFAULT_CONFIG();
// Update PHY config based on board specific configuration
phy_config.phy_addr = spi_eth_module_config->phy_addr;
phy_config.reset_gpio_num = spi_eth_module_config->phy_reset_gpio;
// Configure SPI interface for specific SPI module
spi_device_interface_config_t spi_devcfg = {
.mode = 0,
.clock_speed_hz = CONFIG_EXAMPLE_ETH_SPI_CLOCK_MHZ * 1000 * 1000,
.queue_size = 20,
.spics_io_num = spi_eth_module_config->spi_cs_gpio
};
// Init vendor specific MAC config to default, and create new SPI Ethernet MAC instance
// and new PHY instance based on board configuration
#if CONFIG_EXAMPLE_USE_KSZ8851SNL
eth_ksz8851snl_config_t ksz8851snl_config = ETH_KSZ8851SNL_DEFAULT_CONFIG(CONFIG_EXAMPLE_ETH_SPI_HOST, &spi_devcfg);
ksz8851snl_config.int_gpio_num = spi_eth_module_config->int_gpio;
ksz8851snl_config.poll_period_ms = spi_eth_module_config->polling_ms;
esp_eth_mac_t *mac = esp_eth_mac_new_ksz8851snl(&ksz8851snl_config, &mac_config);
esp_eth_phy_t *phy = esp_eth_phy_new_ksz8851snl(&phy_config);
#elif CONFIG_EXAMPLE_USE_DM9051
eth_dm9051_config_t dm9051_config = ETH_DM9051_DEFAULT_CONFIG(CONFIG_EXAMPLE_ETH_SPI_HOST, &spi_devcfg);
dm9051_config.int_gpio_num = spi_eth_module_config->int_gpio;
dm9051_config.poll_period_ms = spi_eth_module_config->polling_ms;
esp_eth_mac_t *mac = esp_eth_mac_new_dm9051(&dm9051_config, &mac_config);
esp_eth_phy_t *phy = esp_eth_phy_new_dm9051(&phy_config);
#elif CONFIG_EXAMPLE_USE_W5500
eth_w5500_config_t w5500_config = ETH_W5500_DEFAULT_CONFIG(CONFIG_EXAMPLE_ETH_SPI_HOST, &spi_devcfg);
w5500_config.int_gpio_num = spi_eth_module_config->int_gpio;
w5500_config.poll_period_ms = spi_eth_module_config->polling_ms;
esp_eth_mac_t *mac = esp_eth_mac_new_w5500(&w5500_config, &mac_config);
esp_eth_phy_t *phy = esp_eth_phy_new_w5500(&phy_config);
#endif //CONFIG_EXAMPLE_USE_W5500
// Init Ethernet driver to default and install it
esp_eth_handle_t eth_handle = NULL;
esp_eth_config_t eth_config_spi = ETH_DEFAULT_CONFIG(mac, phy);
ESP_GOTO_ON_FALSE(esp_eth_driver_install(&eth_config_spi, &eth_handle) == ESP_OK, NULL, err, TAG, "SPI Ethernet driver install failed");
// The SPI Ethernet module might not have a burned factory MAC address, we can set it manually.
if (spi_eth_module_config->mac_addr != NULL) {
ESP_GOTO_ON_FALSE(esp_eth_ioctl(eth_handle, ETH_CMD_S_MAC_ADDR, spi_eth_module_config->mac_addr) == ESP_OK,
NULL, err, TAG, "SPI Ethernet MAC address config failed");
}
if (mac_out != NULL) {
*mac_out = mac;
}
if (phy_out != NULL) {
*phy_out = phy;
}
return eth_handle;
err:
if (eth_handle != NULL) {
esp_eth_driver_uninstall(eth_handle);
}
if (mac != NULL) {
mac->del(mac);
}
if (phy != NULL) {
phy->del(phy);
}
return ret;
}
#endif // CONFIG_EXAMPLE_USE_SPI_ETHERNET
esp_err_t example_eth_init(esp_eth_handle_t *eth_handles_out[], uint8_t *eth_cnt_out)
{
esp_err_t ret = ESP_OK;
esp_eth_handle_t *eth_handles = NULL;
uint8_t eth_cnt = 0;
#if CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET || CONFIG_EXAMPLE_USE_SPI_ETHERNET
ESP_GOTO_ON_FALSE(eth_handles_out != NULL && eth_cnt_out != NULL, ESP_ERR_INVALID_ARG,
err, TAG, "invalid arguments: initialized handles array or number of interfaces");
eth_handles = calloc(SPI_ETHERNETS_NUM + INTERNAL_ETHERNETS_NUM, sizeof(esp_eth_handle_t));
ESP_GOTO_ON_FALSE(eth_handles != NULL, ESP_ERR_NO_MEM, err, TAG, "no memory");
#if CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET
eth_handles[eth_cnt] = eth_init_internal(NULL, NULL);
ESP_GOTO_ON_FALSE(eth_handles[eth_cnt], ESP_FAIL, err, TAG, "internal Ethernet init failed");
eth_cnt++;
#endif //CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET
#if CONFIG_EXAMPLE_USE_SPI_ETHERNET
ESP_GOTO_ON_ERROR(spi_bus_init(), err, TAG, "SPI bus init failed");
// Init specific SPI Ethernet module configuration from Kconfig (CS GPIO, Interrupt GPIO, etc.)
spi_eth_module_config_t spi_eth_module_config[CONFIG_EXAMPLE_SPI_ETHERNETS_NUM] = { 0 };
INIT_SPI_ETH_MODULE_CONFIG(spi_eth_module_config, 0);
// The SPI Ethernet module(s) might not have a burned factory MAC address, hence use manually configured address(es).
// In this example, Locally Administered MAC address derived from ESP32x base MAC address is used.
// Note that Locally Administered OUI range should be used only when testing on a LAN under your control!
uint8_t base_mac_addr[ETH_ADDR_LEN];
ESP_GOTO_ON_ERROR(esp_efuse_mac_get_default(base_mac_addr), err, TAG, "get EFUSE MAC failed");
uint8_t local_mac_1[ETH_ADDR_LEN];
esp_derive_local_mac(local_mac_1, base_mac_addr);
spi_eth_module_config[0].mac_addr = local_mac_1;
#if CONFIG_EXAMPLE_SPI_ETHERNETS_NUM > 1
INIT_SPI_ETH_MODULE_CONFIG(spi_eth_module_config, 1);
uint8_t local_mac_2[ETH_ADDR_LEN];
base_mac_addr[ETH_ADDR_LEN - 1] += 1;
esp_derive_local_mac(local_mac_2, base_mac_addr);
spi_eth_module_config[1].mac_addr = local_mac_2;
#endif
#if CONFIG_EXAMPLE_SPI_ETHERNETS_NUM > 2
#error Maximum number of supported SPI Ethernet devices is currently limited to 2 by this example.
#endif
for (int i = 0; i < CONFIG_EXAMPLE_SPI_ETHERNETS_NUM; i++) {
eth_handles[eth_cnt] = eth_init_spi(&spi_eth_module_config[i], NULL, NULL);
ESP_GOTO_ON_FALSE(eth_handles[eth_cnt], ESP_FAIL, err, TAG, "SPI Ethernet init failed");
eth_cnt++;
}
#endif // CONFIG_ETH_USE_SPI_ETHERNET
#else
ESP_LOGD(TAG, "no Ethernet device selected to init");
#endif // CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET || CONFIG_EXAMPLE_USE_SPI_ETHERNET
*eth_handles_out = eth_handles;
*eth_cnt_out = eth_cnt;
return ret;
#if CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET || CONFIG_EXAMPLE_USE_SPI_ETHERNET
err:
free(eth_handles);
return ret;
#endif
}
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