(sock,FIONBIO,&non_blocking); } int len = recv(sock, rx_buffer, sizeof(rx_buffer) - 1, 0); //接收 #if 1 if (len >= 0) { rx_buffer[len] = 0; // Null-terminate whatever we received and treat like a string ESP_LOGI(TAG, "Received %d bytes from %s:", len, host_ip);...
// WiFiconstchar*ssid ="xxxxx";// Enter your WiFi nameconstchar*password ="xxxxx";// Enter WiFi password// MQTT Brokerconstchar*mqtt_broker ="broker.emqx.io";constchar*topic ="emqx/esp32";constchar*mqtt_username ="emqx";constchar*mqtt_password ="public";constintmqtt_port =1883; 建立...
Re: ESP32 Ints or Doubles to Strings PostbyPeterR»Wed Dec 25, 2019 1:47 pm No it is missing last time I looked (v4.0-dev). ostringstream works though, so I use something like: Code:Select all std::stringToString(intn){ std::ostringstream stm; stm << n;returnstm.str(); } ...
voidsenderTask(void* parameter){intitem =0;for(;;) {xQueueSend(queue, &item, portMAX_DELAY);item++;}} voidreceiverTask(void* parameter){intitem;for(;;) {xQueueReceive(queue, &item, portMAX_DELAY);Serial.println(item);}} voidsetup(){que...
transp, bool bpp8) //plot 8 or 1 bit image or sprite with a transparent coloursetSwapBytes(bool swap) //Used by 16 bit pushImage() to swap byte order in coloursgetSwapBytes(void) //Return the swap byte order for coloursreadRectRGB(int32_t x0, int32_t y0, int32_t w, int...
找到String fontName和String fontType所在行,fontName后面的名字改为字体名字,fontType为ttf或者otf,若字体文件为其他格式可以在字体转换网站转换为otf或ttf,int fontSize为生成字体本身的大小,int displayFontSize为生成字体的预览大小,两个值可以根据需要自行修改 ...
和数字 int create_js(void) { cJSON *root, js_body; root= JSON_CreateArray();//创建数组 cJSON_AddItemArray(root, cJSON_CreateString("Hello world"));//创建字符串 cJSON_AddItemToArray(root, cJSON_CreateNumber(10)); //创建数字 { char *s = cJSON_PrintUnformatted(root); if(s) {...
String msg = ""; for (int i = 0; i < length; i++) { msg += (char)payload[i]; } Serial.print("Msg:"); Serial.println(msg); if (msg == "on") {//如果接收字符on,亮灯 turnOnLed();//开灯函数 } else if (msg == "off") {//如果接收字符off,关灯 ...
intbaoJing=100;// 报警constintguanLi=99;// 管理constintkaiShuo=98;// 开锁constintmianTi=97;// 免提constintguanLi_long=103;// 长按管理constintspeaker_analogPin=11;// 喇叭电压unsignedlongspeaker_previousMillis=0;constintspeaker_interval=1000*60;intspeaker_Value=0;intspeaker_count=0;constint...
#include<WiFi.h>#include"Servo.h"Servo myservo;staticconstint servoPin=13;constchar*ssid="";constchar*password="";// 端口80WiFiServerserver(80);// 存储HTTP请求的变量String header;// 解码 HTTP GET 值String valueString=String(5);int pos1...