v2.9

src/slave.cpp

@@ -34,23 +34,36 @@ void slave::init(int8_t MY485PORT_RX,int8_t MY485PORT_TX){
 
     // GPSSeiral.begin(115200, SWSERIAL_8N1, 2, 12, false);
     wireme.setPins(7,8);
-
+    wireme.begin();
+    Serial.println("slave init ...");
     if (!mlx.begin(MLX90614_I2CADDR,&wireme)) {
         Serial.println("Error connecting to MLX sensor. Check wiring.");
     //while (1);
+        return ;
     };
-    mlx.writeEmissivity(new_emissivity); // this does the 0x0000 erase write
+    isinit=true;
+    
+    mlx.writeEmissivity(new_emissivity); 
+    
     Serial.println(sizeof(openGNRMC));
 
+
 }
 
 double slave::getMLX(){
+    if (/* condition */!isinit)
+    {
+        return 0;
+        /* code */
+    }
+    
     double a =mlx.readObjectTempC();
     return a;
     // Serial.write((char*) &a,8);
 }
 
 void slave::getWehter(){
+
     while (my485Port->read()!=-1);
     my485Port->write(a,8);
     delay(90);
@@ -89,6 +102,7 @@ float slave::getYuliang(){
 }
 
 int32_t slave::getYuliangfuliang(){
+
     while (my485Port->read()!=-1);
     my485Port->write(yuliangfuliangdu,8);
     delay(90);
@@ -107,6 +121,7 @@ int32_t slave::getYuliangfuliang(){
 
 /// 返回1，表示ok
 uint8_t slave::claeryuliang(){
+
     while (my485Port->read()!=-1);
     my485Port->write(ClearYL,8);
     delay(90);