mirror of
https://github.com/jomjol/AI-on-the-edge-device.git
synced 2025-12-07 20:16:55 +03:00
290 lines
9.1 KiB
C++
290 lines
9.1 KiB
C++
#include "connect_wlan.h"
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#include <string.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 "driver/gpio.h"
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#include "esp_system.h"
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#include "esp_wifi.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#include <fstream>
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#include <string>
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#include <vector>
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#include <sstream>
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#include <iostream>
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#define EXAMPLE_ESP_MAXIMUM_RETRY 1000
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/* FreeRTOS event group to signal when we are connected*/
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static EventGroupHandle_t s_wifi_event_group;
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/* The event group allows multiple bits for each event, but we only care about two events:
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* - we are connected to the AP with an IP
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* - we failed to connect after the maximum amount of retries */
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static const char *TAG = "wifi station";
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static int s_retry_num = 0;
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///////////////////////////////////////////////////////////
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#define BLINK_GPIO GPIO_NUM_33
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int BlinkDauer;
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int BlinkAnzahl;
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bool BlinkOff;
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bool BlinkIsRunning = false;
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std::string hostname = "";
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std::string std_hostname = "watermeter";
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std::string ipadress = "";
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std::string ssid = "";
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std::string* getIPAddress()
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{
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return &ipadress;
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}
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std::string* getSSID()
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{
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return &ssid;
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}
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void task_doBlink(void *pvParameter)
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{
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ESP_LOGI("BLINK", "Blinken - start");
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while (BlinkIsRunning)
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{
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// ESP_LOGI("BLINK", "Blinken - wait");
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vTaskDelay(100 / portTICK_PERIOD_MS);
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}
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BlinkIsRunning = true;
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// Init the GPIO
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gpio_pad_select_gpio(BLINK_GPIO);
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/* Set the GPIO as a push/pull output */
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gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
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for (int i = 0; i < BlinkAnzahl; ++i)
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{
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if (BlinkAnzahl > 1)
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{
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gpio_set_level(BLINK_GPIO, 1);
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vTaskDelay(BlinkDauer / portTICK_PERIOD_MS);
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}
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gpio_set_level(BLINK_GPIO, 0);
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vTaskDelay(BlinkDauer / portTICK_PERIOD_MS);
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}
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if (BlinkOff)
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gpio_set_level(BLINK_GPIO, 1);
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ESP_LOGI("BLINK", "Blinken - done");
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BlinkIsRunning = false;
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vTaskDelete(NULL); //Delete this task if it exits from the loop above
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}
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void LEDBlinkTask(int _dauer, int _anz, bool _off)
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{
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BlinkDauer = _dauer;
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BlinkAnzahl = _anz;
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BlinkOff = _off;
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xTaskCreate(&task_doBlink, "task_doBlink", configMINIMAL_STACK_SIZE * 8, NULL, tskIDLE_PRIORITY+1, NULL);
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}
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/////////////////////////////////////////////////////////
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static void 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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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
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LEDBlinkTask(200, 1, true);
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esp_wifi_connect();
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} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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// if (s_retry_num < EXAMPLE_ESP_MAXIMUM_RETRY){
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esp_wifi_connect();
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s_retry_num++;
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ESP_LOGI(TAG, "retry to connect to the AP");
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ESP_LOGI(TAG,"connect to the AP fail");
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} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
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ipadress = std::string(ip4addr_ntoa((const ip4_addr*) &event->ip_info.ip));
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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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LEDBlinkTask(1000, 5, true);
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}
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}
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void strinttoip4(const char *ip, int &a, int &b, int &c, int &d) {
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std::string zw = std::string(ip);
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std::stringstream s(zw);
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char ch; //to temporarily store the '.'
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s >> a >> ch >> b >> ch >> c >> ch >> d;
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}
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void wifi_init_sta(const char *_ssid, const char *_password, const char *_hostname, const char *_ipadr, const char *_gw, const char *_netmask, const char *_dns)
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{
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ssid = std::string(_ssid);
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s_wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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/////////////////////////////////////////////////////////////////
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esp_netif_t *my_sta = esp_netif_create_default_wifi_sta();
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if ((_ipadr != NULL) && (_gw != NULL) && (_netmask != NULL))
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{
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ESP_LOGI(TAG, "set IP %s, GW %s, Netmask %s manual", _ipadr, _gw, _netmask);
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esp_netif_dhcpc_stop(my_sta);
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esp_netif_ip_info_t ip_info;
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int a, b, c, d;
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strinttoip4(_ipadr, a, b, c, d);
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IP4_ADDR(&ip_info.ip, a, b, c, d);
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strinttoip4(_gw, a, b, c, d);
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IP4_ADDR(&ip_info.gw, a, b, c, d);
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strinttoip4(_netmask, a, b, c, d);
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IP4_ADDR(&ip_info.netmask, a, b, c, d);
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esp_netif_set_ip_info(my_sta, &ip_info);
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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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if ((_ipadr != NULL) && (_gw != NULL) && (_netmask != NULL))
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{
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if (_dns == NULL)
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_dns = _gw;
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ESP_LOGI(TAG, "set DNS manual");
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esp_netif_dns_info_t dns_info;
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ip4_addr_t ip;
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ip.addr = esp_ip4addr_aton(_dns);
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ip_addr_set_ip4_u32(&dns_info.ip, ip.addr);
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ESP_ERROR_CHECK(esp_netif_set_dns_info(my_sta, ESP_NETIF_DNS_MAIN, &dns_info));
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}
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/////////////////////////////////////////////////////////////////
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// esp_netif_create_default_wifi_sta();
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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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/*
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////////////////////////////// esp-idf 4.2 //////////////////////////
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esp_event_handler_instance_t instance_any_id;
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esp_event_handler_instance_t instance_got_ip;
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ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
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ESP_EVENT_ANY_ID,
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&event_handler,
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NULL,
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&instance_any_id));
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ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
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IP_EVENT_STA_GOT_IP,
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&event_handler,
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NULL,
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&instance_got_ip));
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////////////////////////// ENDE esp-idf 4.2 ///////////////////////////
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*/
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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wifi_config_t wifi_config = { };
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strcpy((char*)wifi_config.sta.ssid, (const char*)_ssid);
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strcpy((char*)wifi_config.sta.password, (const char*)_password);
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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(WIFI_IF_STA, &wifi_config) );
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ESP_ERROR_CHECK(esp_wifi_start() );
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if (_hostname != NULL)
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{
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esp_err_t ret = tcpip_adapter_set_hostname(TCPIP_ADAPTER_IF_STA , _hostname);
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hostname = std::string(_hostname);
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if(ret != ESP_OK ){
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ESP_LOGE(TAG,"failed to set hostname:%d",ret);
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}
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}
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
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* number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
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EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
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WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
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pdFALSE,
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pdFALSE,
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portMAX_DELAY);
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/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
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* happened. */
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if (bits & WIFI_CONNECTED_BIT) {
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ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
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_ssid, _password);
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} else if (bits & WIFI_FAIL_BIT) {
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ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
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_ssid, _password);
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} else {
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ESP_LOGE(TAG, "UNEXPECTED EVENT");
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}
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/* The event will not be processed after unregister */
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/*
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////////////////////////////// esp-idf 4.2 //////////////////////////
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ESP_ERROR_CHECK(esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
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ESP_ERROR_CHECK(esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
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////////////////////////// ENDE esp-idf 4.2 ///////////////////////////
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*/
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/* Deaktiveren, damit bei einen Verbindungsabbruch neu aufgebaut wird
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
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vEventGroupDelete(s_wifi_event_group);
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*/
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/*
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while (BlinkIsRunning)
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{
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vTaskDelay(100 / portTICK_PERIOD_MS);
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}
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*/
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}
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void wifi_init_sta(const char *_ssid, const char *_password, const char *_hostname)
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{
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wifi_init_sta(_ssid, _password, _hostname, NULL, NULL, NULL, NULL);
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}
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void wifi_init_sta(const char *_ssid, const char *_password)
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{
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wifi_init_sta(_ssid, _password, NULL, NULL, NULL, NULL, NULL);
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}
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