PressureWrapper: add getPressure()

esp-vent-main/src/I2C.cpp

@@ -37,7 +37,7 @@
  * this code.
  */
 
-#include "../inc/I2C.h"
+#include "I2C.h"
 
 
 I2C::I2C(const I2C_config &cfg): device(nullptr) {

esp-vent-main/src/PressureWrapper.cpp

@@ -35,13 +35,26 @@ PressureWrapper::~PressureWrapper ()
 }
 
 int PressureWrapper::getPressure() {
-
+	int16_t pressure = 0;
+	if(!getRawPressure ()) {
+		unsigned int i = 0;
+		while(i<7200000) i++;
+		getRawPressure ();
+		i = 0;
+	}
+//	do {
+//		getRawPressure ();
+//	} while (crc8(data.rBuffer, 2) != data.crc);
+	pressure = data.rBuffer[0];
+	pressure = pressure << 8;
+	pressure |= data.rBuffer[1];
+	float result = (float) pressure * 0.95 / 240;
+	return (int) result;
 }
 
-PRESSURE_DATA* PressureWrapper::getRawPressure () {
+bool PressureWrapper::getRawPressure () {
 	uint8_t getMeasurementComm = 0xF1;
-	i2c->transaction(0x40, &getMeasurementComm, 1, data.rBuffer, 3);
-	return &data;
+	return (i2c->transaction(ADDRESS, &getMeasurementComm, 1, data.rBuffer, 3));
 }
 
 

esp-vent-main/src/PressureWrapper.h

@@ -12,8 +12,12 @@
 #include <cstdio>
 
 #define ADDRESS 0x40
-#define READADD 0x81
-#define WRITEADD 0x80
+
+
+/**
+ * @brief structure to hold a raw data from
+ * the pressure sensor
+ */
 
 typedef struct _PRESSURE{
 	uint8_t rBuffer[2];
@@ -24,11 +28,8 @@ class PressureWrapper
 {
 public:
   PressureWrapper ();
-  /**
-   * @brief Get the Status object
-   *
-   * @return true
-   * @return false
+  /*
+   * @return pressure in Pascal
    */
   int getPressure ();
 
@@ -37,7 +38,11 @@ public:
 private:
   I2C *i2c;
   PRESSURE_DATA data = {{0, 0}, 0};
-  PRESSURE_DATA* getRawPressure ();
+  /*
+   * @return struct with pressure data in
+   * rBuffer and CRC check in crc
+   */
+  bool getRawPressure ();
 };
 
 #endif /* PRESSUREWRAPPER_H_ */