Diff: MQ135Sensor.cpp

Revision:

0:cbe8cd32b8d9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MQ135Sensor.cpp	Thu Sep 08 14:05:15 2016 +0000
@@ -0,0 +1,55 @@
+#include "MQ135Sensor.h"
+
+MQ135Sensor::MQ135Sensor(PinName analog_out_pin_name): MQ135_sensor(analog_out_pin_name) {
+    analog_out_pname = analog_out_pin_name;
+    reading_type = MQ135_ALL;
+}
+
+        
+sensorStatus MQ135Sensor::readSensor(string &sensor_reading) {
+
+    //add start to reading
+    sensor_reading = "{";
+    
+    //Read Temp
+    if ((reading_type & MQ135_CO2) == MQ135_CO2) {
+        float co2 = MQ135_sensor.getResistance();
+        //check required here
+
+        char reading_type_string[10];
+        sprintf(reading_type_string, "%05X", MQ135_CO2);        
+        char co2_string[10];
+        sprintf(co2_string, "%2.2f", co2);        
+        sensor_reading = sensor_reading + reading_type_string + ":" + co2_string;
+    }
+    
+    if ((reading_type & MQ135_NH3) == MQ135_NH3) {
+        float nh3 = MQ135_sensor.getResistance();
+        //check required here
+        char reading_type_string[10];
+        sprintf(reading_type_string, "%05X", MQ135_NH3);        
+        char nh3_string[10];
+        sprintf(nh3_string, "%2.2f", nh3);        
+        sensor_reading = sensor_reading + ", " + reading_type_string + ":" + nh3_string;
+    }
+
+    //add end to reading
+    sensor_reading = sensor_reading + "}";
+    
+    return SENSOR_SUCCESS;
+}
+
+    
+sensorStatus MQ135Sensor::setReadingType(sensorReadingType sensor_reading_types) {
+    if ((sensor_reading_types > MQ135_FIRST) && (sensor_reading_types <= MQ135_ALL)) {
+        reading_type = sensor_reading_types;
+        return SENSOR_SUCCESS;
+    } else {
+        return SENSOR_PARAM_OUT_RANGE;
+    }
+}  
+    
+sensorReadingType MQ135Sensor::getReadingType() {
+    return reading_type;
+}
+