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/// Port library interface to BMP085 sensors connected via I2C - see: http://jeelabs.net/projects/hardware/wiki/pp1
// 2009-02-17 <jc@wippler.nl> http://opensource.org/licenses/mit-license.php
class BMP085 : public DeviceI2C {
int16_t ac1, ac2, ac3, b1, b2, mb, mc, md;
uint16_t ac4, ac5, ac6;
uint16_t readWord(uint8_t last) const
{ uint16_t v = read(0) << 8; return v | read(last); }
void readFromReg(uint8_t reg) const
{ send(); write(reg); receive(); }
public:
enum { TEMP, PRES };
int32_t meas[2];
uint8_t oss;
///Constructor for BMP085 class. @param osrs 0..3 Oversampling setting.
BMP085 (const PortI2C& p, uint8_t osrs =0)
: DeviceI2C (p, 0x77), oss (osrs) {}
///Set the oversampling setting for the high resolution mode. @param osrs 0..3.
void setOverSampling(uint8_t osrs) { oss = osrs; }
///Start a measurement. @param type BMP::TEMP for temperature or BMP::PRES for pressure.
uint8_t startMeas(uint8_t type) const;
///Get the results from the last measurement. @param type BMP::TEMP for temperature or BMP::PRES for pressure.
int32_t getResult(uint8_t type);
///Take a measurement. @param type BMP::TEMP for temperature or BMP::PRES for pressure.
int32_t measure(uint8_t type)
{ delay(startMeas(type)); return getResult(type); }
void getCalibData();
void calculate(int16_t& tval, int32_t& pval) const;
};
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