lora+esp8266+luat air202组网

简介

通过lora组网将采集的数据传送到gprs网关，然后实现服务端与lora节点的通讯。
最终目的实现定时亮灯、远程亮灯、亮灯监测、gps等
lora参考资料：
http://www.openedv.com/forum.php?mod=viewthread&tid=288985
http://www.openedv.com/forum.php?mod=viewthread&tid=288951

整体架构

image.png

硬件说明

lora模块：正点原子 SX1278 ATK-LORA-01
gprs： luat air202
nodemcu: 安信可
继电器、电流传感器、gps等待
连线：nodemcu lora
Gpio13 TX
Gpio15 RX
Vin Vcc
GND GND

代码

lora节点nodemcu的arduino核心代码

#include <SoftwareSerial.h>
#include <Ticker.h>

SoftwareSerial loraSerial(13, 15);
Ticker ticker1;

String recCMD = "";
int relayPin = 4; //继电器引脚


void ticker1Callback()
{
  while (loraSerial.available() > 0)
  {

    char inByte = loraSerial.read();
    char temp[] = " ";
    sprintf(temp, "%02x", inByte);
    recCMD += temp;
  }
  // 00 data FF 并且首位是00 末位是FF
  if (recCMD.length() >= 6) {
    unsigned long startTime = millis();
    Serial.println("loop--------" + String(recCMD) + "--elapsed time:" + String(millis() - startTime) + "-------loop");

    String  _cmd = recCMD.substring(2, 4);
    Serial.println(_cmd);
    if (_cmd == "01") {
      Serial.println("open light");
      digitalWrite(relayPin, HIGH);
    } else if (_cmd == "02") {
      Serial.println("close light");
      digitalWrite(relayPin, LOW);
    }
    recCMD = "";
  }
}
void setup() {
  // put your setup code here, to run once:
  pinMode(relayPin, OUTPUT);
  Serial.begin(115200);
  loraSerial.begin(115200);
  ticker1.attach_ms(1, ticker1Callback);

  Serial.println("start lora");
}

void loop() {

  Serial.println("send data");
  unsigned char hexdata[10] = {0x0, 0x0, 0x0, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17};
  loraSerial.write(hexdata, 10);
  delay(5000);

}

运行效果：

image.png