292 lines
8.9 KiB
C
292 lines
8.9 KiB
C
/* Common functions for protocol examples, to establish Wi-Fi or Ethernet connection.
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <string.h>
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#include "protocol_examples_common.h"
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#include "sdkconfig.h"
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#include "esp_event.h"
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#include "esp_wifi.h"
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#include "esp_eth.h"
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#include "esp_log.h"
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#include "tcpip_adapter.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#define GOT_IPV4_BIT BIT(0)
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#define GOT_IPV6_BIT BIT(1)
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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#define CONNECTED_BITS (GOT_IPV4_BIT | GOT_IPV6_BIT)
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#else
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#define CONNECTED_BITS (GOT_IPV4_BIT)
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#endif
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static EventGroupHandle_t s_connect_event_group;
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static ip4_addr_t s_ip_addr;
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static const char* s_connection_name;
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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static ip6_addr_t s_ipv6_addr;
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#endif
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static const char *TAG = "example_connect";
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/* set up connection, Wi-Fi or Ethernet */
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static void start();
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/* tear down connection, release resources */
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static void stop();
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static void on_got_ip(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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memcpy(&s_ip_addr, &event->ip_info.ip, sizeof(s_ip_addr));
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xEventGroupSetBits(s_connect_event_group, GOT_IPV4_BIT);
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}
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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static void on_got_ipv6(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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ip_event_got_ip6_t* event = (ip_event_got_ip6_t*) event_data;
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memcpy(&s_ipv6_addr, &event->ip6_info.ip, sizeof(s_ipv6_addr));
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xEventGroupSetBits(s_connect_event_group, GOT_IPV6_BIT);
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}
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#endif // CONFIG_EXAMPLE_CONNECT_IPV6
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esp_err_t example_connect()
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{
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if (s_connect_event_group != NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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s_connect_event_group = xEventGroupCreate();
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start();
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xEventGroupWaitBits(s_connect_event_group, CONNECTED_BITS, true, true, portMAX_DELAY);
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ESP_LOGI(TAG, "Connected to %s", s_connection_name);
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ESP_LOGI(TAG, "IPv4 address: " IPSTR, IP2STR(&s_ip_addr));
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_LOGI(TAG, "IPv6 address: " IPV6STR, IPV62STR(s_ipv6_addr));
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#endif
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return ESP_OK;
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}
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esp_err_t example_disconnect()
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{
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if (s_connect_event_group == NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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vEventGroupDelete(s_connect_event_group);
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s_connect_event_group = NULL;
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stop();
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ESP_LOGI(TAG, "Disconnected from %s", s_connection_name);
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s_connection_name = NULL;
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return ESP_OK;
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}
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#ifdef CONFIG_EXAMPLE_CONNECT_WIFI
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static void on_wifi_disconnect(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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ESP_LOGI(TAG, "Wi-Fi disconnected, trying to reconnect...");
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ESP_ERROR_CHECK( esp_wifi_connect() );
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}
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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static void on_wifi_connect(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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tcpip_adapter_create_ip6_linklocal(TCPIP_ADAPTER_IF_STA);
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}
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#endif // CONFIG_EXAMPLE_CONNECT_IPV6
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static void start()
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{
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &on_wifi_disconnect, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &on_got_ip, NULL));
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, &on_wifi_connect, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_GOT_IP6, &on_got_ipv6, NULL));
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#endif
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = CONFIG_EXAMPLE_WIFI_SSID,
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.password = CONFIG_EXAMPLE_WIFI_PASSWORD,
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},
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};
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ESP_LOGI(TAG, "Connecting to %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_ERROR_CHECK(esp_wifi_connect());
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s_connection_name = CONFIG_EXAMPLE_WIFI_SSID;
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}
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static void stop()
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{
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &on_wifi_disconnect));
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &on_got_ip));
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_GOT_IP6, &on_got_ipv6));
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, &on_wifi_connect));
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#endif
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ESP_ERROR_CHECK(esp_wifi_stop());
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ESP_ERROR_CHECK(esp_wifi_deinit());
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}
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#endif // CONFIG_EXAMPLE_CONNECT_WIFI
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#ifdef CONFIG_EXAMPLE_CONNECT_ETHERNET
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#include "driver/gpio.h"
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#ifdef CONFIG_PHY_LAN8720
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#include "eth_phy/phy_lan8720.h"
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#define DEFAULT_ETHERNET_PHY_CONFIG phy_lan8720_default_ethernet_config
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#endif
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#ifdef CONFIG_PHY_TLK110
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#include "eth_phy/phy_tlk110.h"
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#define DEFAULT_ETHERNET_PHY_CONFIG phy_tlk110_default_ethernet_config
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#elif CONFIG_PHY_IP101
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#include "eth_phy/phy_ip101.h"
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#define DEFAULT_ETHERNET_PHY_CONFIG phy_ip101_default_ethernet_config
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#endif
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#define PIN_PHY_POWER CONFIG_PHY_POWER_PIN
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#define PIN_SMI_MDC CONFIG_PHY_SMI_MDC_PIN
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#define PIN_SMI_MDIO CONFIG_PHY_SMI_MDIO_PIN
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#ifdef CONFIG_PHY_USE_POWER_PIN
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/**
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* @brief re-define power enable func for phy
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*
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* @param enable true to enable, false to disable
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*
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* @note This function replaces the default PHY power on/off function.
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* If this GPIO is not connected on your device (and PHY is always powered),
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* you can use the default PHY-specific power on/off function.
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*/
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static void phy_device_power_enable_via_gpio(bool enable)
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{
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assert(DEFAULT_ETHERNET_PHY_CONFIG.phy_power_enable);
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if (!enable) {
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DEFAULT_ETHERNET_PHY_CONFIG.phy_power_enable(false);
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}
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gpio_pad_select_gpio(PIN_PHY_POWER);
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gpio_set_direction(PIN_PHY_POWER, GPIO_MODE_OUTPUT);
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if (enable == true) {
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gpio_set_level(PIN_PHY_POWER, 1);
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ESP_LOGI(TAG, "Power On Ethernet PHY");
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} else {
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gpio_set_level(PIN_PHY_POWER, 0);
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ESP_LOGI(TAG, "Power Off Ethernet PHY");
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}
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vTaskDelay(1); // Allow the power up/down to take effect, min 300us
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if (enable) {
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/* call the default PHY-specific power on function */
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DEFAULT_ETHERNET_PHY_CONFIG.phy_power_enable(true);
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}
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}
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#endif
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/**
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* @brief gpio specific init
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*
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* @note RMII data pins are fixed in esp32:
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* TXD0 <=> GPIO19
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* TXD1 <=> GPIO22
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* TX_EN <=> GPIO21
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* RXD0 <=> GPIO25
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* RXD1 <=> GPIO26
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* CLK <=> GPIO0
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*
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*/
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static void eth_gpio_config_rmii(void)
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{
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phy_rmii_configure_data_interface_pins();
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phy_rmii_smi_configure_pins(PIN_SMI_MDC, PIN_SMI_MDIO);
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}
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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/** Event handler for Ethernet events */
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static void on_eth_event(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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switch (event_id) {
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case ETHERNET_EVENT_CONNECTED:
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ESP_LOGI(TAG, "Ethernet Link Up");
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tcpip_adapter_create_ip6_linklocal(TCPIP_ADAPTER_IF_ETH);
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break;
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default:
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break;
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}
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}
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#endif // CONFIG_EXAMPLE_CONNECT_IPV6
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static void start()
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{
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eth_config_t config = DEFAULT_ETHERNET_PHY_CONFIG;
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config.phy_addr = CONFIG_PHY_ADDRESS;
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config.gpio_config = eth_gpio_config_rmii;
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config.tcpip_input = tcpip_adapter_eth_input;
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config.clock_mode = CONFIG_PHY_CLOCK_MODE;
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#ifdef CONFIG_PHY_USE_POWER_PIN
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/* Replace the default 'power enable' function with an example-specific one
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that toggles a power GPIO. */
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config.phy_power_enable = phy_device_power_enable_via_gpio;
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#endif
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ESP_ERROR_CHECK(esp_eth_init(&config));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, &on_got_ip, NULL));
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_register(ETH_EVENT, ETHERNET_EVENT_CONNECTED, &on_eth_event, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_GOT_IP6, &on_got_ipv6, NULL));
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#endif
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ESP_ERROR_CHECK(esp_eth_enable());
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s_connection_name = "Ethernet";
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}
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static void stop()
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{
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_ETH_GOT_IP, &on_got_ip));
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#ifdef CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_GOT_IP6, &on_got_ipv6));
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ESP_ERROR_CHECK(esp_event_handler_unregister(ETH_EVENT, ETHERNET_EVENT_CONNECTED, &on_eth_event));
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#endif
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ESP_ERROR_CHECK(esp_eth_disable());
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ESP_ERROR_CHECK(esp_eth_deinit());
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}
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#endif // CONFIG_EXAMPLE_CONNECT_ETHERNET
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