【吃灰开发板复活】DIY全志V3s随身终端屏幕适配，LVGL以及各种外设驱动移植教程

libcurl获取天气信息方式// 解析json数据    cJSON * json = cJSON_ParseWithLength(ptr, size * nmemb);    if(!json) {        goto end;    }    json = cJSON_GetObjectitem(json, "now");    if(!json) {        goto end;    }    cJSON * temp     = cJSON_GetObjectItem(json, "temp");    cJSON * humidity = cJSON_GetObjectItem(json, "humidity");    cJSON * text     = cJSON_GetObjectItem(json, "text");    cJSON * pressure = cJSON_GetObjectItem(json, "pressure");pthread_mutex_lock(&mutex);    if(cJSON_IsString(text)) {        lv_label_set_text_fmt(label1, "当前天气n%s", text->valuestring);    }    if(cJSON_IsString(pressure)) {        lv_label_set_text_fmt(label2, "气压n%s hPa", pressure->valuestring);    }    if(cJSON_IsString(temp)) {        lv_label_set_text_fmt(label3, "室外温度n%s ℃", temp->valuestring);    }    if(cJSON_IsString(humidity)) {        lv_label_set_text_fmt(label4, "湿度n%s %%", humidity->valuestring);    }    pthread_mutex_unlock(&mutex);    cJSON_Delete(json);end:    return size * nmemb;char * url =        "https://devapi.qweather.com/v7/weather/now?location=" LOCATION "&key=xxx";    CURL * curl = curl_easy_init();    curl_easy_setopt(curl, CURLOPT_URL, url);    curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);    //    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, now_weather_cb);    curl_easy_setopt(curl, CURLOPT_ENCODING, "gzip");音频播放[root@buildroot ~]# mpv 2.flac --no-video     Video --vid=1 [P] (mjpeg 500x500 1.000fps) (+) Audio --aid=1 (flac 2ch 48000Hz)File tags: Album: 西厢寻他 Title: 西厢寻他 Track: 1AO: [alsa] 48000Hz stereo 2ch s32A: 00:00:04 / 00:03:43 (2%)Exiting... (Quit)export PS1='[u@h w]$ '