dpU7fdHw

1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include "freertos/FreeRTOS.h"
5#include "freertos/task.h"
6#include "esp_system.h"
7#include "esp_wifi.h"
8#include "esp_event.h"
9#include "esp_log.h"
10#include "esp_netif.h"
11#include "nvs_flash.h"
12
13#include "ssd1306.h"
14#define WIFI_SSID "XXXXXXX"
15#define WIFI_PASS "XXXXXXX"
16#define tag "SSD1306"
17#define TAG "WIFI_DISPLAY"
18
19SSD1306_t dev;
20
21static esp_ip4_addr_t ip_addr;
22static void wifi_init_sta(void);
23static void display_init(void);
24static void display_ip(void);
25static void event_handler(void* arg, esp_event_base_t event_base, 
26                          int32_t event_id, void* event_data)
27{
28    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
29        esp_wifi_connect();
30    } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
31        esp_wifi_connect();
32    } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
33        ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
34        ip_addr = event->ip_info.ip;
35        ESP_LOGI(TAG, "Got IP: " IPSTR, IP2STR(&ip_addr));
36        display_ip();
37    }
38}
39
40void app_main(void)
41{
42    display_init();
43    wifi_init_sta();
44}
45
46static void display_init(void)
47{
48ESP_LOGI(tag,"Initing display");
49    ESP_LOGI(tag, "INTERFACE is i2c");
50    ESP_LOGI(tag, "CONFIG_SDA_GPIO=%d",CONFIG_SDA_GPIO);
51    ESP_LOGI(tag, "CONFIG_SCL_GPIO=%d",CONFIG_SCL_GPIO);
52    ESP_LOGI(tag, "CONFIG_RESET_GPIO=%d",CONFIG_RESET_GPIO);
53    i2c_master_init(&dev, CONFIG_SDA_GPIO, CONFIG_SCL_GPIO, CONFIG_RESET_GPIO);
54#if CONFIG_FLIP
55    dev._flip = true;
56    ESP_LOGW(tag, "Flip upside down");
57#endif
58
59    ESP_LOGI(tag, "Panel is 128x64");
60    ssd1306_init(&dev, 128, 64);
61    
62    ssd1306_clear_screen(&dev, false);
63    ssd1306_display_text(&dev, 0, "Connecting WiFi...", 17, false);
64ESP_LOGI(TAG,"Connecting WiFi...");
65    }
66
67static void display_ip(void)
68{
69    char ip_str[16];
70    snprintf(ip_str, sizeof(ip_str), IPSTR, IP2STR(&ip_addr));
71    ssd1306_clear_screen(&dev, false);
72    ssd1306_display_text(&dev, 0, "WiFi Connected!", 14, false);
73    ssd1306_display_text(&dev, 2, "IP:", 3, false);
74    ssd1306_display_text(&dev, 3, ip_str, strlen(ip_str), false);
75
76}
77
78static void wifi_init_sta(void)
79{
80    ESP_ERROR_CHECK(esp_netif_init());
81    ESP_ERROR_CHECK(esp_event_loop_create_default());
82    esp_netif_create_default_wifi_sta();
83
84    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
85    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
86    esp_event_handler_instance_t instance_any_id;
87    esp_event_handler_instance_t instance_got_ip;
88    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
89                                                        ESP_EVENT_ANY_ID,
90                                                        &event_handler,
91                                                        NULL,
92                                                        &instance_any_id));
93    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
94                                                        IP_EVENT_STA_GOT_IP,
95                                                        &event_handler,
96                                                        NULL,
97                                                        &instance_got_ip));
98    wifi_config_t wifi_config = {
99        .sta = {
100            .ssid = WIFI_SSID,
101            .password = WIFI_PASS,
102            .threshold.authmode = WIFI_AUTH_WPA2_PSK
103        },
104    };
105    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
106    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
107    ESP_ERROR_CHECK(esp_wifi_start());
108}
109