Diff: HP206C.h

Revision:

1:c5247b2ef5af

Parent:

0:817bdb1032c5

Child:

2:8f5aa7475f97

--- a/HP206C.h	Tue Jun 25 09:02:19 2019 +0000
+++ b/HP206C.h	Tue Jun 25 13:20:39 2019 +0000
@@ -0,0 +1,74 @@
+#ifndef _HP206C
+#define _HP206C
+
+#include "mbed.h"
+
+#define I2C_BAROMETER_ADDRESS 0x76 << 1 // 0xEC, device adress
+
+#define HP20X_SOFT_RST        0x06 // for initializing, takes longer than next
+#define HP20X_ANA_CAL         0x28 // recalibrate analog internal circuitries, for unstable environment
+
+#define HP20X_WR_CONVERT_CMD  0x40
+
+#define HP20X_READ_PT         0x10 // read pressure and altitude command
+#define HP20X_READ_A          0x31 // read altitude command
+
+#define HP20X_WR_REG_MODE     0xC0
+#define HP20X_RD_REG_MODE     0x80
+
+#define HP20X_OK_DEV          0X80 // successfully initialized
+#define HP20X_REG_PARA        0X0F // status register
+
+#define HP20X_CONVERT_OSR4096 0 << 2
+#define HP20X_CONVERT_OSR2048 1 << 2
+#define HP20X_CONVERT_OSR1024 2 << 2
+#define HP20X_CONVERT_OSR512  3 << 2
+#define HP20X_CONVERT_OSR256  4 << 2
+#define HP20X_CONVERT_OSR128  5 << 2
+
+#define OSR_CFG HP20X_CONVERT_OSR1024
+
+class HP206C
+{
+public:
+
+    HP206C(PinName p_sda, PinName p_scl);
+    /*
+    float operator()()
+    {
+        return performMeasAndgetAltitude();
+    }
+    */
+    virtual ~HP206C();
+    
+    void     reset();
+    
+    float    performMeasAndreadAltitude();
+    float    readTemperature();
+    float    readPressure();
+
+private:
+
+    I2C i2c;
+
+    float temperature;
+    float pressure;
+    float altitude;
+    bool  baro_found;
+    
+    unsigned char readRegister(unsigned char reg);
+    void          writeRegister(unsigned char reg, unsigned char data);
+    void          enableCompensation();
+    void          disableCompensation();
+    void          softReset();
+    void          recalibrate();
+    uint32_t      readData3Bytes();
+    uint32_t      *readData6Bytes();
+    void          readTemperatureAndPressureStep1();
+    void          readTemperatureAndPressureStep2();
+    void          readAltitude();
+    uint8_t       getConversionTime();
+
+};
+
+#endif
\ No newline at end of file