altb_pmic / HP206C

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Dependents:   Grove-Barometric_Pressure_Sensor_Example

HP206C.h@3:dd1c93488020, 2019-06-25 (annotated)

Committer:
pmic
Date:
Tue Jun 25 14:03:58 2019 +0000
Revision:
3:dd1c93488020
Parent:
2:8f5aa7475f97
Child:
4:a2b79f08ad14
enhance stuff

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pmic 1:c5247b2ef5af 1 #ifndef _HP206C
pmic 1:c5247b2ef5af 2 #define _HP206C
pmic 1:c5247b2ef5af 3
pmic 1:c5247b2ef5af 4 #include "mbed.h"
pmic 1:c5247b2ef5af 5
pmic 1:c5247b2ef5af 6 #define I2C_BAROMETER_ADDRESS 0x76 << 1 // 0xEC, device adress
pmic 1:c5247b2ef5af 7
pmic 1:c5247b2ef5af 8 #define HP20X_SOFT_RST 0x06 // for initializing, takes longer than next
pmic 1:c5247b2ef5af 9 #define HP20X_ANA_CAL 0x28 // recalibrate analog internal circuitries, for unstable environment
pmic 1:c5247b2ef5af 10
pmic 1:c5247b2ef5af 11 #define HP20X_WR_CONVERT_CMD 0x40
pmic 1:c5247b2ef5af 12
pmic 1:c5247b2ef5af 13 #define HP20X_READ_PT 0x10 // read pressure and altitude command
pmic 1:c5247b2ef5af 14 #define HP20X_READ_A 0x31 // read altitude command
pmic 1:c5247b2ef5af 15
pmic 1:c5247b2ef5af 16 #define HP20X_WR_REG_MODE 0xC0
pmic 1:c5247b2ef5af 17 #define HP20X_RD_REG_MODE 0x80
pmic 1:c5247b2ef5af 18
pmic 1:c5247b2ef5af 19 #define HP20X_OK_DEV 0X80 // successfully initialized
pmic 1:c5247b2ef5af 20 #define HP20X_REG_PARA 0X0F // status register
pmic 1:c5247b2ef5af 21
pmic 1:c5247b2ef5af 22 #define HP20X_CONVERT_OSR4096 0 << 2
pmic 1:c5247b2ef5af 23 #define HP20X_CONVERT_OSR2048 1 << 2
pmic 1:c5247b2ef5af 24 #define HP20X_CONVERT_OSR1024 2 << 2
pmic 1:c5247b2ef5af 25 #define HP20X_CONVERT_OSR512 3 << 2
pmic 1:c5247b2ef5af 26 #define HP20X_CONVERT_OSR256 4 << 2
pmic 1:c5247b2ef5af 27 #define HP20X_CONVERT_OSR128 5 << 2
pmic 1:c5247b2ef5af 28
pmic 3:dd1c93488020 29 #define OSR_CFG HP20X_CONVERT_OSR4096
pmic 1:c5247b2ef5af 30
pmic 1:c5247b2ef5af 31 class HP206C
pmic 1:c5247b2ef5af 32 {
pmic 1:c5247b2ef5af 33 public:
pmic 1:c5247b2ef5af 34
pmic 1:c5247b2ef5af 35 HP206C(PinName p_sda, PinName p_scl);
pmic 3:dd1c93488020 36
pmic 3:dd1c93488020 37 float operator()() {
pmic 3:dd1c93488020 38 return readAltitude();
pmic 1:c5247b2ef5af 39 }
pmic 3:dd1c93488020 40
pmic 1:c5247b2ef5af 41 virtual ~HP206C();
pmic 1:c5247b2ef5af 42
pmic 1:c5247b2ef5af 43 void reset();
pmic 3:dd1c93488020 44 float readAltitude();
pmic 1:c5247b2ef5af 45
pmic 1:c5247b2ef5af 46 private:
pmic 1:c5247b2ef5af 47
pmic 1:c5247b2ef5af 48 I2C i2c;
pmic 1:c5247b2ef5af 49
pmic 3:dd1c93488020 50 float altitude;
pmic 3:dd1c93488020 51 bool baro_found;
pmic 3:dd1c93488020 52 uint8_t OSR_ConvertTime;
pmic 1:c5247b2ef5af 53
pmic 1:c5247b2ef5af 54 unsigned char readRegister(unsigned char reg);
pmic 1:c5247b2ef5af 55 void writeRegister(unsigned char reg, unsigned char data);
pmic 1:c5247b2ef5af 56 void enableCompensation();
pmic 1:c5247b2ef5af 57 void disableCompensation();
pmic 1:c5247b2ef5af 58 void softReset();
pmic 1:c5247b2ef5af 59 void recalibrate();
pmic 1:c5247b2ef5af 60 uint32_t readData3Bytes();
pmic 3:dd1c93488020 61 void readTemperatureAndPressure();
pmic 3:dd1c93488020 62 void updateAltitude();
pmic 3:dd1c93488020 63 void setConversionTime();
pmic 1:c5247b2ef5af 64
pmic 1:c5247b2ef5af 65 };
pmic 1:c5247b2ef5af 66
pmic 1:c5247b2ef5af 67 #endif