Revision 6:cec678bb15ef, committed 2017-08-29

Comitter:

rozendhyan

Date:

Tue Aug 29 07:58:37 2017 +0000

Parent:

5:294a8b1bca28

Child:

7:fed254c30643

Commit message:

work on BME280 , still use extend wifi board

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BMP180/BME280.hpp	Tue Aug 29 07:58:37 2017 +0000
@@ -0,0 +1,67 @@
+#include "mbed.h"
+#define size 14
+Serial sensor(PA_11,PA_12);
+Serial pc(USBTX,USBRX);
+int AT[3] = {0xA5,0x52,0xF7};
+class BME280{
+public:
+    void judgement_data(char buf[]);
+    int Temp_read();
+
+private:
+    void receive();
+    void send_AT();
+    char buf[size];
+    int Lux,Temp,Preesure,Hum,Height;
+
+};
+void BME280::judgement_data(char buf[]){
+    int i=0;
+    if(buf[i++]== 0x5A){
+        //pc.printf("first_step\n");
+        if(buf[i++]== 0x5A){
+            //pc.printf("second_step\n");
+           //i++;//go to data type
+            if(buf[i] == 0x15){
+                //pc.printf("Lux type\n");
+                i++;//04
+                Lux = ((buf[i+1]<<24) | (buf[i+2]<<16) | (buf[i+3]<<8) | buf[i+4])/100;
+                //Lux = (0x00<<24) | (0x00<<16) | (0xFE<<8) | 0x40;//test
+                //pc.printf("Lux = %d\n", Lux);
+            }else if(buf[i] == 0x45){
+                //pc.printf("temp type\n");
+                i++;//0A
+                Temp = ((buf[i+1]<<8)|(buf[i+2]))/100;
+                Preesure = ((buf[i+3]<<24)|(buf[i+4]<<16)|(buf[i+5]<<8)|(buf[i+6]))/100;
+                Hum = ((buf[i+7]<<8)|(buf[i+8]))/100;
+                Height = ((buf[i+9]<<8)|(buf[i+10]));
+                //pc.printf("Temp = %d\n", Temp);
+                //pc.printf("Preesure = %d\n", Preesure);
+                //pc.printf("Hum = %d\n", Hum);
+                //pc.printf("Height = %d\n", Height);
+            }
+        }
+    }
+}
+void BME280::receive(){
+    for(int i=0;i<size;i++){
+        buf[i] = sensor.getc();  
+        //pc.putc(buf[i]);
+    }
+    
+}
+void BME280::send_AT(){
+    for(int i=0;i<3;i++){
+        sensor.putc(AT[i]);
+        //pc.putc(AT[i]);
+    }
+}
+int BME280::Temp_read(){
+    send_AT();
+    //wait(0.2);
+    receive();
+    //wait(0.2);
+    judgement_data(this->buf);
+    
+    return Temp;
+}

--- a/TMP36.lib	Fri Nov 11 18:31:11 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://mbed.org/users/zchen311/code/TMP36/#ab3d7d0c34ce

--- a/main.cpp	Fri Nov 11 18:31:11 2016 +0000
+++ b/main.cpp	Tue Aug 29 07:58:37 2017 +0000
@@ -7,16 +7,16 @@
 #include "CayenneMQTTClient.h"
 #include "MQTTNetworkIDW01M1.h"
 #include "SpwfInterface.h"
-#include "TMP36.h"
+#include "BME280.hpp"
 
 // WiFi network info.
-char* ssid = "ssid";
-char* wifiPassword = "wifiPassword";
+char* ssid = "megu megu fire";
+char* wifiPassword = "66666667";
 
 // Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
-char* username = "MQTT_USERNAME";
-char* password = "MQTT_PASSWORD";
-char* clientID = "CLIENT_ID";
+char* username = "1f764db0-122b-11e7-b235-9359079e690e";
+char* password = "0d4e9d94e7897df9af861007853ed3f906b0627d";
+char* clientID = "8ff46d80-8c81-11e7-a491-d751ec027e48";
 
 SpwfSAInterface interface(D8, D2); // TX, RX
 MQTTNetwork<SpwfSAInterface> network(interface);
@@ -136,12 +136,14 @@
 {
     // Start the countdown timer for publishing data every 5 seconds. Change the timeout parameter to publish at a different interval.
     MQTTTimer timer(5000);
-    TMP36 tmpSensor(A5);
+    //TMP36 tmpSensor(A5);
+    BME280 bmpSensor;
+    
     
     while (true) {
         // Yield to allow MQTT message processing.
         mqttClient.yield(1000);
-
+        //printf("%d\n",bmpSensor->Temp_read());
         // Check that we are still connected, if not, reconnect.
         if (!network.connected() || !mqttClient.connected()) {
             network.disconnect();
@@ -152,11 +154,11 @@
                 printf("Reconnect failed, retrying\n");
             }
         }
-
+        printf("before you post data,your temp is %d\n",bmpSensor.Temp_read());
         // Publish some example data every few seconds. This should be changed to send your actual data to Cayenne.
         if (timer.expired()) {
             int error = 0;
-            if ((error = mqttClient.publishData(DATA_TOPIC, 5, TYPE_TEMPERATURE, UNIT_CELSIUS, tmpSensor.read())) != CAYENNE_SUCCESS) {
+            if ((error = mqttClient.publishData(DATA_TOPIC, 5, TYPE_TEMPERATURE, UNIT_CELSIUS,(float)bmpSensor.Temp_read())) != CAYENNE_SUCCESS) {
                 printf("Publish temperature failed, error: %d\n", error);
             }
             // Restart the countdown timer for publishing data every 5 seconds. Change the timeout parameter to publish at a different interval.
@@ -173,7 +175,7 @@
     // Initialize the network interface.
     printf("Initializing interface\n");
     interface.connect(ssid, wifiPassword, NSAPI_SECURITY_WPA2);
-
+    printf("connect AP successful\n");
     // Set the default function that receives Cayenne messages.
     mqttClient.setDefaultMessageHandler(messageArrived);
 
@@ -187,9 +189,12 @@
     }
 
     if (mqttClient.connected())
+        printf("client disconnect\n");
         mqttClient.disconnect();
     if (network.connected())
+        printf("network disconnect\n");
         network.disconnect();
+    
 
     return 0;
 }