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https://github.com/jomjol/AI-on-the-edge-device.git
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This commit is contained in:
jomjol
539
code/components/connect_wlan/connect_wlan._cpp_
Normal file
539
code/components/connect_wlan/connect_wlan._cpp_
Normal file
@@ -0,0 +1,539 @@
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#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 "esp_wifi.h"
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#include "esp_log.h"
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#include <fstream>
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#include <vector>
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#include <sstream>
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#include "Helper.h"
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static const char *TAG = "connect_wlan";
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std::string ssid = "";
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std::string passphrase = "";
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std::string hostname = "";
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std::string ipaddress = "";
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std::string gw = "";
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std::string netmask = "";
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std::string dns = "";
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std::string std_hostname = "watermeter";
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#define BLINK_GPIO GPIO_NUM_33
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static EventGroupHandle_t s_wifi_event_group;
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static int s_retry_num = 0;
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std::vector<string> ZerlegeZeile(std::string input, std::string _delimiter = "")
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{
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std::vector<string> Output;
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std::string delimiter = " =,";
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if (_delimiter.length() > 0){
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delimiter = _delimiter;
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}
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input = trim(input, delimiter);
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size_t pos = findDelimiterPos(input, delimiter);
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std::string token;
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while (pos != std::string::npos) {
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token = input.substr(0, pos);
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token = trim(token, delimiter);
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Output.push_back(token);
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input.erase(0, pos + 1);
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input = trim(input, delimiter);
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pos = findDelimiterPos(input, delimiter);
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}
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Output.push_back(input);
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return Output;
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}
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void blinkstatus(int dauer, int _anzahl)
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{
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gpio_reset_pin(BLINK_GPIO);
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gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
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for (int i = 0; i < _anzahl; ++i)
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{
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gpio_set_level(BLINK_GPIO, 0);
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vTaskDelay(dauer / portTICK_PERIOD_MS);
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gpio_set_level(BLINK_GPIO, 1);
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vTaskDelay(dauer / portTICK_PERIOD_MS);
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}
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}
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void strinttoip4(std::string ip, int &a, int &b, int &c, int &d) {
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std::stringstream s(ip);
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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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static void event_handler_neu(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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blinkstatus(200, 1);
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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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blinkstatus(200, 5);
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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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} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
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blinkstatus(1000, 3);
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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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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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}
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}
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void initialise_wifi()
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{
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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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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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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_neu,
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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_neu,
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NULL,
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&instance_got_ip));
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wifi_config_t wifi_config = { };
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strcpy((char*)wifi_config.sta.ssid, (const char*)ssid.c_str());
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strcpy((char*)wifi_config.sta.password, (const char*)passphrase.c_str());
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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_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.c_str(), passphrase.c_str());
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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.c_str(), passphrase.c_str());
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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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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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vEventGroupDelete(s_wifi_event_group);
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tcpip_adapter_ip_info_t ip_info;
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ESP_ERROR_CHECK(tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ip_info));
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ipaddress = std::string(ip4addr_ntoa(&ip_info.ip));
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netmask = std::string(ip4addr_ntoa(&ip_info.netmask));
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gw = std::string(ip4addr_ntoa(&ip_info.gw));
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printf("IPv4 : %s\n", ip4addr_ntoa(&ip_info.ip));
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printf("HostName : %s\n", hostname.c_str());
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}
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void initialise_wifi_fixed_ip2()
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{
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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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esp_netif_t *my_sta = esp_netif_create_default_wifi_sta();
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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(ipaddress, 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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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 (dns.length() > 0) {
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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.c_str());
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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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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_neu,
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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_neu,
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NULL,
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&instance_got_ip));
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wifi_config_t wifi_config = { };
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strcpy((char*)wifi_config.sta.ssid, (const char*)ssid.c_str());
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strcpy((char*)wifi_config.sta.password, (const char*)passphrase.c_str());
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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_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.c_str(), passphrase.c_str());
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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.c_str(), passphrase.c_str());
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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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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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vEventGroupDelete(s_wifi_event_group);
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tcpip_adapter_ip_info_t ip_info2;
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ESP_ERROR_CHECK(tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ip_info2));
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ipaddress = std::string(ip4addr_ntoa(&ip_info2.ip));
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netmask = std::string(ip4addr_ntoa(&ip_info2.netmask));
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gw = std::string(ip4addr_ntoa(&ip_info2.gw));
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}
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void ConnectToWLAN()
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{
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if (ipaddress.length() == 0 || gw.length() == 0 || netmask.length() == 0)
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{
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printf("Connect to WLAN with dyn. IP\n");
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initialise_wifi();
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}
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else
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{
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printf("Connect to WLAN with fixed IP\n");
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initialise_wifi_fixed_ip2();
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}
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}
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bool ChangeHostName(std::string fn, std::string _newhostname)
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{
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if (_newhostname == hostname)
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return false;
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string line = "";
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std::vector<string> zerlegt;
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bool found = false;
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std::vector<string> neuesfile;
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FILE* pFile;
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fn = FormatFileName(fn);
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pFile = OpenFileAndWait(fn.c_str(), "r");
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printf("file loaded\n");
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if (pFile == NULL)
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return false;
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char zw[1024];
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fgets(zw, 1024, pFile);
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line = std::string(zw);
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while ((line.size() > 0) || !(feof(pFile)))
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||||
{
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printf("%s", line.c_str());
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zerlegt = ZerlegeZeile(line, "=");
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||||
zerlegt[0] = trim(zerlegt[0], " ");
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if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "HOSTNAME")){
|
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line = "hostname = \"" + _newhostname + "\"\n";
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found = true;
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}
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||||
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neuesfile.push_back(line);
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|
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if (fgets(zw, 1024, pFile) == NULL)
|
||||
{
|
||||
line = "";
|
||||
}
|
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else
|
||||
{
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line = std::string(zw);
|
||||
}
|
||||
}
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|
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if (!found)
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||||
{
|
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line = "hostname = \"" + _newhostname + "\"\n";
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neuesfile.push_back(line);
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}
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|
||||
fclose(pFile);
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||||
|
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pFile = OpenFileAndWait(fn.c_str(), "w+");
|
||||
|
||||
for (int i = 0; i < neuesfile.size(); ++i)
|
||||
{
|
||||
fputs(neuesfile[i].c_str(), pFile);
|
||||
}
|
||||
|
||||
fclose(pFile);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
void LoadWlanFromFile(std::string fn)
|
||||
{
|
||||
string line = "";
|
||||
std::vector<string> zerlegt;
|
||||
hostname = std_hostname;
|
||||
|
||||
FILE* pFile;
|
||||
fn = FormatFileName(fn);
|
||||
|
||||
pFile = OpenFileAndWait(fn.c_str(), "r");
|
||||
printf("file loaded\n");
|
||||
|
||||
if (pFile == NULL)
|
||||
return;
|
||||
|
||||
char zw[1024];
|
||||
fgets(zw, 1024, pFile);
|
||||
line = std::string(zw);
|
||||
|
||||
while ((line.size() > 0) || !(feof(pFile)))
|
||||
{
|
||||
printf("%s", line.c_str());
|
||||
zerlegt = ZerlegeZeile(line, "=");
|
||||
zerlegt[0] = trim(zerlegt[0], " ");
|
||||
for (int i = 2; i < zerlegt.size(); ++i)
|
||||
zerlegt[i] = zerlegt[i-1] + zerlegt[i];
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "HOSTNAME")){
|
||||
hostname = trim(zerlegt[1]);
|
||||
if ((hostname[0] == '"') && (hostname[hostname.length()-1] == '"')){
|
||||
hostname = hostname.substr(1, hostname.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "SSID")){
|
||||
ssid = trim(zerlegt[1]);
|
||||
if ((ssid[0] == '"') && (ssid[ssid.length()-1] == '"')){
|
||||
ssid = ssid.substr(1, ssid.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "PASSWORD")){
|
||||
passphrase = zerlegt[1];
|
||||
if ((passphrase[0] == '"') && (passphrase[passphrase.length()-1] == '"')){
|
||||
passphrase = passphrase.substr(1, passphrase.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "IP")){
|
||||
ipaddress = zerlegt[1];
|
||||
if ((ipaddress[0] == '"') && (ipaddress[ipaddress.length()-1] == '"')){
|
||||
ipaddress = ipaddress.substr(1, ipaddress.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "GATEWAY")){
|
||||
gw = zerlegt[1];
|
||||
if ((gw[0] == '"') && (gw[gw.length()-1] == '"')){
|
||||
gw = gw.substr(1, gw.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "NETMASK")){
|
||||
netmask = zerlegt[1];
|
||||
if ((netmask[0] == '"') && (netmask[netmask.length()-1] == '"')){
|
||||
netmask = netmask.substr(1, netmask.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "DNS")){
|
||||
dns = zerlegt[1];
|
||||
if ((dns[0] == '"') && (dns[dns.length()-1] == '"')){
|
||||
dns = dns.substr(1, dns.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if (fgets(zw, 1024, pFile) == NULL)
|
||||
{
|
||||
line = "";
|
||||
}
|
||||
else
|
||||
{
|
||||
line = std::string(zw);
|
||||
}
|
||||
}
|
||||
|
||||
fclose(pFile);
|
||||
|
||||
// Check if Hostname was empty in .ini if yes set to std_hostname
|
||||
if(hostname.length() <= 0){
|
||||
hostname = std_hostname;
|
||||
}
|
||||
|
||||
printf("\nWLan: %s, %s\n", ssid.c_str(), passphrase.c_str());
|
||||
printf("Hostename: %s\n", hostname.c_str());
|
||||
printf("Fixed IP: %s, Gateway %s, Netmask %s, DNS %s\n", ipaddress.c_str(), gw.c_str(), netmask.c_str(), dns.c_str());
|
||||
|
||||
}
|
||||
|
||||
void LoadNetConfigFromFile(std::string _fn, std::string &_ip, std::string &_gw, std::string &_netmask, std::string &_dns)
|
||||
{
|
||||
string line = "";
|
||||
std::vector<string> zerlegt;
|
||||
|
||||
|
||||
|
||||
FILE* pFile;
|
||||
_fn = FormatFileName(_fn);
|
||||
pFile = OpenFileAndWait(_fn.c_str(), "r");
|
||||
|
||||
if (pFile == NULL)
|
||||
return;
|
||||
|
||||
char zw[1024];
|
||||
fgets(zw, 1024, pFile);
|
||||
line = std::string(zw);
|
||||
|
||||
while ((line.size() > 0) || !(feof(pFile)))
|
||||
{
|
||||
printf("%s", line.c_str());
|
||||
zerlegt = ZerlegeZeile(line, "=");
|
||||
zerlegt[0] = trim(zerlegt[0], " ");
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "IP")){
|
||||
_ip = zerlegt[1];
|
||||
if ((_ip[0] == '"') && (_ip[_ip.length()-1] == '"')){
|
||||
_ip = _ip.substr(1, _ip.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "GATEWAY")){
|
||||
_gw = zerlegt[1];
|
||||
if ((_gw[0] == '"') && (_gw[_gw.length()-1] == '"')){
|
||||
_gw = _gw.substr(1, _gw.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "NETMASK")){
|
||||
_netmask = zerlegt[1];
|
||||
if ((_netmask[0] == '"') && (_netmask[_netmask.length()-1] == '"')){
|
||||
_netmask = _netmask.substr(1, _netmask.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if ((zerlegt.size() > 1) && (toUpper(zerlegt[0]) == "DNS")){
|
||||
_dns = zerlegt[1];
|
||||
if ((_dns[0] == '"') && (_dns[_dns.length()-1] == '"')){
|
||||
_dns = _dns.substr(1, _dns.length()-2);
|
||||
}
|
||||
}
|
||||
|
||||
if (fgets(zw, 1024, pFile) == NULL)
|
||||
{
|
||||
line = "";
|
||||
}
|
||||
else
|
||||
{
|
||||
line = std::string(zw);
|
||||
}
|
||||
}
|
||||
|
||||
fclose(pFile);
|
||||
}
|
||||
|
||||
|
||||
std::string getHostname(){
|
||||
return hostname;
|
||||
}
|
||||
|
||||
std::string getIPAddress(){
|
||||
return ipaddress;
|
||||
}
|
||||
|
||||
std::string getSSID(){
|
||||
return ssid;
|
||||
}
|
||||
|
||||
std::string getNetMask(){
|
||||
return netmask;
|
||||
}
|
||||
|
||||
std::string getGW(){
|
||||
return gw;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user