Diff: edge_sensor/edge_pressure.h

Revision:

0:37c8ecde13c2

diff -r 000000000000 -r 37c8ecde13c2 edge_sensor/edge_pressure.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/edge_sensor/edge_pressure.h	Fri Feb 16 08:27:50 2018 +0000
@@ -0,0 +1,109 @@
+#ifndef _EDGE_PRESSURE_H_
+#define _EDGE_PRESSURE_H_
+#include "mbed.h"
+#include "edge_sensor.h"
+#include "PSE530.h"
+
+/**
+ * edge_pressure edge_sensor for measuring gas presssure
+ */
+
+class edge_pressure : public edge_sensor {
+public:
+/**
+ * constructor 
+ * @param *pse PSE530 pressure sensor object
+ */
+    edge_pressure(PSE530 *pse, DigitalOut *en) ;
+
+/**
+ * destructor
+ */
+    ~edge_pressure(void) ;
+    
+/**
+ * reset and clear internal values
+ */
+    virtual void    reset(void) ;
+
+/**
+ * prepare for sampling (not used)
+ */
+    virtual void    prepare(void) ;
+    
+/**
+ * sample the value
+ * @returns 0: success non-0: failure
+ */
+    virtual int    sample(void) ;
+
+/**
+ * deliver the sampled value to afero cloud
+ */
+    virtual int     deliver(void) ;
+    
+/**
+ * show the value in the display (TFT)
+ */
+    virtual void    show(void) ;
+//    virtual void    send_config(void) ; /* send config data to cloud */
+//    virtual void    recv_config(void) ; /* receive config data from cloud */
+
+/**
+ * get_value sample sensor value and calcurate it to the metric value
+ * @returns measured value in kgf/cm2
+ */
+    float get_value(void) ;
+
+/**
+ * Set threshold mode
+ * @param mode int 0: absolute value 1: relative value in percent
+ */
+    void  set_thr_mode(int mode)    { _thr_mode = mode ; }
+
+/**
+ * Get threshold mode
+ * @returns the mode 0: absolute value 1: relative value in percent
+ */
+    int   get_thr_mode(void)        { return _thr_mode ; }
+    
+/**
+ * Set higher threshold
+ * @param thr_high int16_t the higher threshold
+ */
+    void  set_thr_high(int16_t thr_high) ;
+    
+/**
+ * Get higher threshold, the value is calcurated with expected value
+ * @param expected float the expected pressure value for current temperature
+ */
+    float get_thr_high(float expected) ;
+    
+/**
+ * Set lower threshold
+ * @param thr_low int16_t the lower threshold
+ */
+    void  set_thr_low(int16_t thr_low) ;
+    
+/**
+ * Get lower threshold, the value is calcurated with expected value
+ * @param expected float the expected pressure value for current temperature
+ */
+    float get_thr_low(float expected)  ;
+    
+private:
+    PSE530  *_pse ;
+    DigitalOut *_en ;
+    float   _value ;
+    float   _thr_high ;
+    float   _thr_low ;
+    int     _thr_mode ;
+    float   _expected ;
+    float   _higher ;
+    float   _lower ;
+} ;
+
+float temp2expected(float temp) ;
+extern float *current_temp ;
+
+#endif /* _EDGE_PRESSURE_H_ */
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