Diff: MQ9.h

Revision:

0:7712450a546d

Child:

1:9a7fb445a7ad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MQ9.h	Tue May 01 20:26:00 2018 +0000
@@ -0,0 +1,44 @@
+#ifndef _____MQ9_____
+#define _____MQ9_____
+
+#include "mbed.h"
+
+#define MQ9_STATUS_PASS 0
+#define MQ9_STATUS_FAIL -1
+
+/** Class for the MQ9 sensor.
+ *  This library is a modified version of the MQ2 library for Arduino 
+ * Example:
+ * 
+ */ 
+class MQ9
+{
+public:
+    /// Construct the sensor object and setup the sensor pins
+    MQ9(PinName const &p);
+    
+    /// Update the gas concentrations from the sensor.
+    int read();
+    
+    /// Get concentration of LPG
+    float getLPG_ppm();
+    
+    /// Get concentration of CO
+    float getCO_ppm();
+    
+    /// Get concentration of Methane
+    float getMethane_ppm();
+
+private:
+    /// Concentration of LPG
+    float _LPG_ppm;
+    /// Concentration of CO
+    float _CO_ppm;
+    /// Concentration of Methane
+    float _Methane_ppm;
+    
+    /// pin to read the sensor information
+    AnalogIn _pin;
+};
+
+#endif
\ No newline at end of file