ESP32-S3 天气信息显示系统实现
系统架构与核心实现
基于小安派AiPi-Eyes天气站设计思路，在ESP32-S3平台实现天气信息获取与显示功能。
主程序逻辑
void app_main() {
xTaskCreate(ui_render_task, "UI Task", 6144, NULL, 5, NULL);
network_init();
}用户界面任务
void ui_render_task(void *param) {
lv_init();
lv_disp_draw_buf_t display_buffer;
lv_disp_drv_t display_driver;
// 显示驱动配置
esp_lcd_panel_handle_t panel = setup_lcd_driver();
lv_color_t *frame_buf1 = allocate_frame_buffer();
lv_color_t *frame_buf2 = allocate_frame_buffer();
lv_disp_draw_buf_init(&display_buffer, frame_buf1, frame_buf2, LCD_HEIGHT*50);
lv_disp_drv_init(&display_driver);
display_driver.flush_cb = lcd_flush_handler;
lv_disp_drv_register(&display_driver);
// 界面元素初始化
lv_obj_t *main_screen = create_weather_ui();
register_timer_event();
while(1) {
vTaskDelay(pdMS_TO_TICKS(1000));
lv_timer_handler();
}
}网络通信模块
void network_init() {
wifi_connect();
data_queue = xQueueCreate(1, 2048);
xTaskCreate(data_handler_task, "Data Processor", 6144, NULL, 2, NULL);
// 创建定时器用于周期更新
update_timer = xTimerCreate("WeatherUpdate", pdMS_TO_TICKS(3600000),
pdTRUE, 0, update_trigger);
xTimerStart(update_timer, 0);
}
static void data_handler_task(void* arg) {
char *buffer = pvPortMalloc(2048);
while(1) {
xQueueReceive(data_queue, buffer, portMAX_DELAY);
process_weather_data(buffer);
}
}HTTP请求处理
void fetch_weather_data() {
const char* request = "GET /api?appid=YOUR_ID&appsecret=YOUR_KEY HTTP/1.1\r\n"
"Host: api.weather.com\r\n\r\n";
int socket = create_tcp_connection("api.weather.com", 80);
send(socket, request, strlen(request), 0);
char response[2048];
read(socket, response, sizeof(response));
extract_json_data(response);
close(socket);
}数据解析与显示
void update_weather_display(cJSON *root) {
lv_label_set_text(city_label, cJSON_GetString(cJSON_GetObjectItem(root, "city")));
lv_label_set_text(temp_label, cJSON_GetString(cJSON_GetObjectItem(root, "temperature")));
lv_label_set_text(humidity_label, cJSON_GetString(cJSON_GetObjectItem(root, "humidity")));
}关键配置说明
WiFi连接配置：
在menuconfig中设置SSID和密码
分区表配置：
选择"Single factory app(large)"分区方案支持1.5MB固件
