HttpGet

HTTPGET 描述 本示例会实现一个HTTP请求和接收的例子 需要调用#include <ESP8266.h>头文件。 所用方法 wifi.createTCP(HOST_NAME, HOST_PORT) wifi.send(data, len) wifi.recv(buffer, sizeof(buffer), timeout) 实例 #include <ESP8266.h> #ifdef ESP32 #error "This code is not recommended to run on the ESP32 platform! Please check your Tools->Board setting." #endif /** **CoreUSB UART Port: [Serial1] [D0,D1] **Core+ UART Port: [Serial1] [D2,D3] **/ #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega1284P__) || defined (__AVR_ATmega644P__) || defined(__AVR_ATmega128RFA1__) #define EspSerial Serial1 #define UARTSPEED 115200 #endif /** **Core UART Port: [SoftSerial] [D2,D3] **/ #if defined (__AVR_ATmega168__) || defined (__AVR_ATmega328__) || defined (__AVR_ATmega328P__) #include <SoftwareSerial.h> SoftwareSerial mySerial(2, 3); /* RX:D2, TX:D3 */ #define EspSerial mySerial #define UARTSPEED 9600 #endif #define SSID F("Makermodule") #define PASSWORD F("microduino") #define HOST_NAME F("www.adafruit.com") #define HOST_PORT (80) static const byte GETDATA[] PROGMEM = { "GET /testwifi/index.html HTTP/1.0\r\nHost: www.adafruit.com\r\nConnection: close\r\n\r\n" }; ESP8266 wifi(&EspSerial); void setup(void) { Serial.begin(115200); while (!Serial); // wait for Leonardo enumeration, others continue immediately Serial.print(F("setup begin\r\n")); delay(100); WifiInit(EspSerial, UARTSPEED); Serial.print(F("FW Version:")); Serial.println(wifi.getVersion().c_str()); if (wifi.setOprToStationSoftAP()) { Serial.print(F("to station + softap ok\r\n")); } else { Serial.print(F("to station + softap err\r\n")); } if (wifi.joinAP(SSID, PASSWORD)) { Serial.print(F("Join AP success\r\n")); Serial.print(F("IP:")); Serial.println( wifi.getLocalIP().c_str()); } else { Serial.print(F("Join AP failure\r\n")); } if (wifi.disableMUX()) { Serial.print(F("single ok\r\n")); } else { Serial.print(F("single err\r\n")); } Serial.print(F("setup end\r\n")); } void loop(void) { if (wifi.createTCP(HOST_NAME, HOST_PORT)) { Serial.print(F("create tcp ok\r\n")); } else { Serial.print(F("create tcp err\r\n")); } //char *hello = "GET /testwifi/index.html HTTP/1.0\r\nHost: www.adafruit.com\r\nConnection: close\r\n\r\n"; //wifi.send((const uint8_t*)hello, strlen(hello)); //直接发送 wifi.sendFromFlash(GETDATA, sizeof(GETDATA)); //从Flash读取发送内容，节约内存 uint8_t buffer[512] = {0}; uint32_t len = wifi.recv(buffer, sizeof(buffer), 20000); if (len > 0) { Serial.print(F("Received:[")); for (uint32_t i = 0; i < len; i++) { Serial.print((char)buffer[i]); } Serial.print(F("]\r\n")); } if (wifi.releaseTCP()) { Serial.print(F("release tcp ok\r\n")); } else { Serial.print(F("release tcp err\r\n")); } //while (1); delay(5000); }

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