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https://github.com/espressif/esp-idf.git
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esp-mesh: Added example showing internal IP capable mesh network
This commit is contained in:
David Cermak
426
examples/mesh/ip_internal_network/main/mesh_main.c
Normal file
426
examples/mesh/ip_internal_network/main/mesh_main.c
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@@ -0,0 +1,426 @@
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/* Mesh Internal Communication Example
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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 "esp_wifi.h"
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#include "esp_system.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "esp_mesh.h"
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#include "nvs_flash.h"
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#include "mesh_netif.h"
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#include "driver/gpio.h"
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#include "freertos/semphr.h"
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/*******************************************************
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* Macros
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*******************************************************/
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#define EXAMPLE_BUTTON_GPIO 0
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// commands for internal mesh communication:
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// <CMD> <PAYLOAD>, where CMD is one character, payload is variable dep. on command
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#define CMD_KEYPRESSED 0x55
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// CMD_KEYPRESSED: payload is always 6 bytes identifying address of node sending keypress event
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#define CMD_ROUTE_TABLE 0x56
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// CMD_KEYPRESSED: payload is a multiple of 6 listing addresses in a routing table
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/*******************************************************
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* Constants
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*******************************************************/
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static const char *MESH_TAG = "mesh_main";
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static const uint8_t MESH_ID[6] = { 0x77, 0x77, 0x77, 0x77, 0x77, 0x76};
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/*******************************************************
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* Variable Definitions
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*******************************************************/
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static bool is_running = true;
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static mesh_addr_t mesh_parent_addr;
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static int mesh_layer = -1;
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static esp_ip4_addr_t s_current_ip;
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static mesh_addr_t s_route_table[CONFIG_MESH_ROUTE_TABLE_SIZE];
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static int s_route_table_size = 0;
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static SemaphoreHandle_t s_route_table_lock = NULL;
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static uint8_t s_mesh_tx_payload[CONFIG_MESH_ROUTE_TABLE_SIZE*6+1];
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/*******************************************************
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* Function Declarations
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*******************************************************/
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// interaction with public mqtt broker
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void mqtt_app_start(void);
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void mqtt_app_publish(char* topic, char *publish_string);
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/*******************************************************
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* Function Definitions
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*******************************************************/
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static void initialise_button(void)
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{
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gpio_config_t io_conf = {0};
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io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
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io_conf.pin_bit_mask = BIT64(EXAMPLE_BUTTON_GPIO);
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.pull_up_en = 1;
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io_conf.pull_down_en = 0;
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gpio_config(&io_conf);
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}
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void static recv_cb(mesh_addr_t *from, mesh_data_t *data)
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{
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if (data->data[0] == CMD_ROUTE_TABLE) {
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int size = data->size - 1;
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if (s_route_table_lock == NULL || size%6 != 0) {
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ESP_LOGE(MESH_TAG, "Error in receiving raw mesh data: Unexpected size");
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return;
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}
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xSemaphoreTake(s_route_table_lock, portMAX_DELAY);
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s_route_table_size = size / 6;
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for (int i=0; i < s_route_table_size; ++i) {
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ESP_LOGI(MESH_TAG, "Received Routing table [%d] "
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MACSTR, i, MAC2STR(data->data + 6*i + 1));
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}
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memcpy(&s_route_table, data->data + 1, size);
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xSemaphoreGive(s_route_table_lock);
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} else if (data->data[0] == CMD_KEYPRESSED) {
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if (data->size != 7) {
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ESP_LOGE(MESH_TAG, "Error in receiving raw mesh data: Unexpected size");
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return;
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}
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ESP_LOGW(MESH_TAG, "Keypressed detected on node: "
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MACSTR, MAC2STR(data->data + 1));
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} else {
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ESP_LOGE(MESH_TAG, "Error in receiving raw mesh data: Unknown command");
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}
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}
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static void check_button(void* args)
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{
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static bool old_level = true;
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bool new_level;
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bool run_check_button = true;
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initialise_button();
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while (run_check_button) {
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new_level = gpio_get_level(EXAMPLE_BUTTON_GPIO);
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if (!new_level && old_level) {
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if (s_route_table_size && !esp_mesh_is_root()) {
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ESP_LOGW(MESH_TAG, "Key pressed!");
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mesh_data_t data;
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uint8_t *my_mac = mesh_netif_get_station_mac();
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uint8_t data_to_send[6+1] = { CMD_KEYPRESSED, };
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esp_err_t err;
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char print[6*3+1]; // MAC addr size + terminator
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memcpy(data_to_send + 1, my_mac, 6);
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data.size = 7;
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data.proto = MESH_PROTO_BIN;
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data.tos = MESH_TOS_P2P;
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data.data = data_to_send;
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snprintf(print, sizeof(print),MACSTR, MAC2STR(my_mac));
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mqtt_app_publish("/topic/ip_mesh/key_pressed", print);
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xSemaphoreTake(s_route_table_lock, portMAX_DELAY);
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for (int i = 0; i < s_route_table_size; i++) {
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if (MAC_ADDR_EQUAL(s_route_table[i].addr, my_mac)) {
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continue;
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}
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err = esp_mesh_send(&s_route_table[i], &data, MESH_DATA_P2P, NULL, 0);
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ESP_LOGI(MESH_TAG, "Sending to [%d] "
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MACSTR ": sent with err code: %d", i, MAC2STR(s_route_table[i].addr), err);
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}
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xSemaphoreGive(s_route_table_lock);
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}
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}
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old_level = new_level;
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vTaskDelay(50 / portTICK_PERIOD_MS);
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}
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vTaskDelete(NULL);
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}
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void esp_mesh_mqtt_task(void *arg)
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{
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is_running = true;
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char *print;
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mesh_data_t data;
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esp_err_t err;
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mqtt_app_start();
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while (is_running) {
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asprintf(&print, "layer:%d IP:" IPSTR, esp_mesh_get_layer(), IP2STR(&s_current_ip));
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ESP_LOGI(MESH_TAG, "Tried to publish %s", print);
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mqtt_app_publish("/topic/ip_mesh", print);
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free(print);
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if (esp_mesh_is_root()) {
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esp_mesh_get_routing_table((mesh_addr_t *) &s_route_table,
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CONFIG_MESH_ROUTE_TABLE_SIZE * 6, &s_route_table_size);
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data.size = s_route_table_size * 6 + 1;
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data.proto = MESH_PROTO_BIN;
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data.tos = MESH_TOS_P2P;
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s_mesh_tx_payload[0] = CMD_ROUTE_TABLE;
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memcpy(s_mesh_tx_payload + 1, s_route_table, s_route_table_size*6);
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data.data = s_mesh_tx_payload;
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for (int i = 0; i < s_route_table_size; i++) {
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err = esp_mesh_send(&s_route_table[i], &data, MESH_DATA_P2P, NULL, 0);
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ESP_LOGI(MESH_TAG, "Sending routing table to [%d] "
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MACSTR ": sent with err code: %d", i, MAC2STR(s_route_table[i].addr), err);
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}
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}
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vTaskDelay(2 * 1000 / portTICK_RATE_MS);
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}
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vTaskDelete(NULL);
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}
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esp_err_t esp_mesh_comm_mqtt_task_start(void)
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{
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static bool is_comm_mqtt_task_started = false;
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s_route_table_lock = xSemaphoreCreateMutex();
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if (!is_comm_mqtt_task_started) {
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xTaskCreate(esp_mesh_mqtt_task, "mqtt task", 3072, NULL, 5, NULL);
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xTaskCreate(check_button, "check button task", 3072, NULL, 5, NULL);
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is_comm_mqtt_task_started = true;
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}
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return ESP_OK;
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}
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void mesh_event_handler(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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mesh_addr_t id = {0,};
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static uint8_t last_layer = 0;
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switch (event_id) {
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case MESH_EVENT_STARTED: {
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esp_mesh_get_id(&id);
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_MESH_STARTED>ID:"MACSTR"", MAC2STR(id.addr));
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mesh_layer = esp_mesh_get_layer();
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}
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break;
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case MESH_EVENT_STOPPED: {
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_STOPPED>");
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mesh_layer = esp_mesh_get_layer();
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}
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break;
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case MESH_EVENT_CHILD_CONNECTED: {
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mesh_event_child_connected_t *child_connected = (mesh_event_child_connected_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_CHILD_CONNECTED>aid:%d, "MACSTR"",
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child_connected->aid,
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MAC2STR(child_connected->mac));
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}
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break;
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case MESH_EVENT_CHILD_DISCONNECTED: {
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mesh_event_child_disconnected_t *child_disconnected = (mesh_event_child_disconnected_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_CHILD_DISCONNECTED>aid:%d, "MACSTR"",
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child_disconnected->aid,
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MAC2STR(child_disconnected->mac));
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}
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break;
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case MESH_EVENT_ROUTING_TABLE_ADD: {
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mesh_event_routing_table_change_t *routing_table = (mesh_event_routing_table_change_t *)event_data;
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ESP_LOGW(MESH_TAG, "<MESH_EVENT_ROUTING_TABLE_ADD>add %d, new:%d",
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routing_table->rt_size_change,
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routing_table->rt_size_new);
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}
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break;
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case MESH_EVENT_ROUTING_TABLE_REMOVE: {
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mesh_event_routing_table_change_t *routing_table = (mesh_event_routing_table_change_t *)event_data;
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ESP_LOGW(MESH_TAG, "<MESH_EVENT_ROUTING_TABLE_REMOVE>remove %d, new:%d",
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routing_table->rt_size_change,
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routing_table->rt_size_new);
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}
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break;
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case MESH_EVENT_NO_PARENT_FOUND: {
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mesh_event_no_parent_found_t *no_parent = (mesh_event_no_parent_found_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_NO_PARENT_FOUND>scan times:%d",
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no_parent->scan_times);
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}
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/* TODO handler for the failure */
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break;
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case MESH_EVENT_PARENT_CONNECTED: {
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mesh_event_connected_t *connected = (mesh_event_connected_t *)event_data;
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esp_mesh_get_id(&id);
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mesh_layer = connected->self_layer;
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memcpy(&mesh_parent_addr.addr, connected->connected.bssid, 6);
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ESP_LOGI(MESH_TAG,
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"<MESH_EVENT_PARENT_CONNECTED>layer:%d-->%d, parent:"MACSTR"%s, ID:"MACSTR"",
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last_layer, mesh_layer, MAC2STR(mesh_parent_addr.addr),
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esp_mesh_is_root() ? "<ROOT>" :
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(mesh_layer == 2) ? "<layer2>" : "", MAC2STR(id.addr));
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last_layer = mesh_layer;
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mesh_netifs_start(esp_mesh_is_root());
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}
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break;
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case MESH_EVENT_PARENT_DISCONNECTED: {
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mesh_event_disconnected_t *disconnected = (mesh_event_disconnected_t *)event_data;
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ESP_LOGI(MESH_TAG,
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"<MESH_EVENT_PARENT_DISCONNECTED>reason:%d",
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disconnected->reason);
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mesh_layer = esp_mesh_get_layer();
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mesh_netifs_stop();
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}
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break;
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case MESH_EVENT_LAYER_CHANGE: {
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mesh_event_layer_change_t *layer_change = (mesh_event_layer_change_t *)event_data;
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mesh_layer = layer_change->new_layer;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_LAYER_CHANGE>layer:%d-->%d%s",
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last_layer, mesh_layer,
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esp_mesh_is_root() ? "<ROOT>" :
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(mesh_layer == 2) ? "<layer2>" : "");
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last_layer = mesh_layer;
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}
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break;
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case MESH_EVENT_ROOT_ADDRESS: {
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mesh_event_root_address_t *root_addr = (mesh_event_root_address_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_ROOT_ADDRESS>root address:"MACSTR"",
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MAC2STR(root_addr->addr));
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}
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break;
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case MESH_EVENT_VOTE_STARTED: {
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mesh_event_vote_started_t *vote_started = (mesh_event_vote_started_t *)event_data;
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ESP_LOGI(MESH_TAG,
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"<MESH_EVENT_VOTE_STARTED>attempts:%d, reason:%d, rc_addr:"MACSTR"",
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vote_started->attempts,
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vote_started->reason,
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MAC2STR(vote_started->rc_addr.addr));
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}
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break;
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case MESH_EVENT_VOTE_STOPPED: {
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_VOTE_STOPPED>");
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break;
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}
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case MESH_EVENT_ROOT_SWITCH_REQ: {
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mesh_event_root_switch_req_t *switch_req = (mesh_event_root_switch_req_t *)event_data;
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ESP_LOGI(MESH_TAG,
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"<MESH_EVENT_ROOT_SWITCH_REQ>reason:%d, rc_addr:"MACSTR"",
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switch_req->reason,
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MAC2STR( switch_req->rc_addr.addr));
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}
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break;
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case MESH_EVENT_ROOT_SWITCH_ACK: {
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/* new root */
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mesh_layer = esp_mesh_get_layer();
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esp_mesh_get_parent_bssid(&mesh_parent_addr);
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_ROOT_SWITCH_ACK>layer:%d, parent:"MACSTR"", mesh_layer, MAC2STR(mesh_parent_addr.addr));
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}
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break;
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case MESH_EVENT_TODS_STATE: {
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mesh_event_toDS_state_t *toDs_state = (mesh_event_toDS_state_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_TODS_REACHABLE>state:%d", *toDs_state);
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}
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break;
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case MESH_EVENT_ROOT_FIXED: {
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mesh_event_root_fixed_t *root_fixed = (mesh_event_root_fixed_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_ROOT_FIXED>%s",
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root_fixed->is_fixed ? "fixed" : "not fixed");
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}
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break;
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case MESH_EVENT_ROOT_ASKED_YIELD: {
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mesh_event_root_conflict_t *root_conflict = (mesh_event_root_conflict_t *)event_data;
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ESP_LOGI(MESH_TAG,
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"<MESH_EVENT_ROOT_ASKED_YIELD>"MACSTR", rssi:%d, capacity:%d",
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MAC2STR(root_conflict->addr),
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root_conflict->rssi,
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root_conflict->capacity);
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}
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break;
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case MESH_EVENT_CHANNEL_SWITCH: {
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mesh_event_channel_switch_t *channel_switch = (mesh_event_channel_switch_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_CHANNEL_SWITCH>new channel:%d", channel_switch->channel);
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}
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break;
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case MESH_EVENT_SCAN_DONE: {
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mesh_event_scan_done_t *scan_done = (mesh_event_scan_done_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_SCAN_DONE>number:%d",
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scan_done->number);
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}
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break;
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case MESH_EVENT_NETWORK_STATE: {
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mesh_event_network_state_t *network_state = (mesh_event_network_state_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_NETWORK_STATE>is_rootless:%d",
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network_state->is_rootless);
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}
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break;
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case MESH_EVENT_STOP_RECONNECTION: {
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_STOP_RECONNECTION>");
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}
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break;
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case MESH_EVENT_FIND_NETWORK: {
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mesh_event_find_network_t *find_network = (mesh_event_find_network_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_FIND_NETWORK>new channel:%d, router BSSID:"MACSTR"",
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find_network->channel, MAC2STR(find_network->router_bssid));
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}
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break;
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case MESH_EVENT_ROUTER_SWITCH: {
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mesh_event_router_switch_t *router_switch = (mesh_event_router_switch_t *)event_data;
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ESP_LOGI(MESH_TAG, "<MESH_EVENT_ROUTER_SWITCH>new router:%s, channel:%d, "MACSTR"",
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router_switch->ssid, router_switch->channel, MAC2STR(router_switch->bssid));
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}
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break;
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default:
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ESP_LOGI(MESH_TAG, "unknown id:%d", event_id);
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break;
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}
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}
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void ip_event_handler(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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ESP_LOGI(MESH_TAG, "<IP_EVENT_STA_GOT_IP>IP:" IPSTR, IP2STR(&event->ip_info.ip));
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s_current_ip.addr = event->ip_info.ip.addr;
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#if !CONFIG_MESH_USE_GLOBAL_DNS_IP
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esp_netif_t *netif = event->esp_netif;
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esp_netif_dns_info_t dns;
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ESP_ERROR_CHECK(esp_netif_get_dns_info(netif, ESP_NETIF_DNS_MAIN, &dns));
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mesh_netif_start_root_ap(esp_mesh_is_root(), dns.ip.u_addr.ip4.addr);
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#endif
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esp_mesh_comm_mqtt_task_start();
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}
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void app_main(void)
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{
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ESP_ERROR_CHECK(nvs_flash_init());
|
||||
/* tcpip initialization */
|
||||
ESP_ERROR_CHECK(esp_netif_init());
|
||||
/* event initialization */
|
||||
ESP_ERROR_CHECK(esp_event_loop_create_default());
|
||||
/* crete network interfaces for mesh (only station instance saved for further manipulation, soft AP instance ignored */
|
||||
ESP_ERROR_CHECK(mesh_netifs_init(recv_cb));
|
||||
|
||||
/* wifi initialization */
|
||||
wifi_init_config_t config = WIFI_INIT_CONFIG_DEFAULT();
|
||||
ESP_ERROR_CHECK(esp_wifi_init(&config));
|
||||
ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &ip_event_handler, NULL));
|
||||
ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_FLASH));
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE));
|
||||
ESP_ERROR_CHECK(esp_wifi_start());
|
||||
/* mesh initialization */
|
||||
ESP_ERROR_CHECK(esp_mesh_init());
|
||||
ESP_ERROR_CHECK(esp_event_handler_register(MESH_EVENT, ESP_EVENT_ANY_ID, &mesh_event_handler, NULL));
|
||||
ESP_ERROR_CHECK(esp_mesh_set_max_layer(CONFIG_MESH_MAX_LAYER));
|
||||
ESP_ERROR_CHECK(esp_mesh_set_vote_percentage(1));
|
||||
ESP_ERROR_CHECK(esp_mesh_set_ap_assoc_expire(10));
|
||||
mesh_cfg_t cfg = MESH_INIT_CONFIG_DEFAULT();
|
||||
/* mesh ID */
|
||||
memcpy((uint8_t *) &cfg.mesh_id, MESH_ID, 6);
|
||||
/* router */
|
||||
cfg.channel = CONFIG_MESH_CHANNEL;
|
||||
cfg.router.ssid_len = strlen(CONFIG_MESH_ROUTER_SSID);
|
||||
memcpy((uint8_t *) &cfg.router.ssid, CONFIG_MESH_ROUTER_SSID, cfg.router.ssid_len);
|
||||
memcpy((uint8_t *) &cfg.router.password, CONFIG_MESH_ROUTER_PASSWD,
|
||||
strlen(CONFIG_MESH_ROUTER_PASSWD));
|
||||
/* mesh softAP */
|
||||
ESP_ERROR_CHECK(esp_mesh_set_ap_authmode(CONFIG_MESH_AP_AUTHMODE));
|
||||
cfg.mesh_ap.max_connection = CONFIG_MESH_AP_CONNECTIONS;
|
||||
memcpy((uint8_t *) &cfg.mesh_ap.password, CONFIG_MESH_AP_PASSWD,
|
||||
strlen(CONFIG_MESH_AP_PASSWD));
|
||||
ESP_ERROR_CHECK(esp_mesh_set_config(&cfg));
|
||||
/* mesh start */
|
||||
ESP_ERROR_CHECK(esp_mesh_start());
|
||||
ESP_LOGI(MESH_TAG, "mesh starts successfully, heap:%d, %s\n", esp_get_free_heap_size(),
|
||||
esp_mesh_is_root_fixed() ? "root fixed" : "root not fixed");
|
||||
}
|
||||
Reference in New Issue
Block a user