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ms5611.h
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ms5611.h
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/*
MS5611-01BA.cpp - Interfaces a Measurement Specialities MS5611-01BA with Arduino
See http://www.meas-spec.com/downloads/MS5611-01BA01.pdf for the device datasheet
Copyright (C) 2011 Fabio Varesano <fvaresano@yahoo.it>
Adapted to Cortex-M4 Fly Controller by Nuvoton
Development of this code has been supported by the Department of Computer Science,
Universita' degli Studi di Torino, Italy within the Piemonte Project
http://www.piemonte.di.unito.it/
This program is free software: you can redistribute it and/or modify
it under the terms of the version 3 GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*============================================================================*
* O O __ ______ __ *
* \ / /\ / /_ _ __ / /___/ / /_ _ *
* [+] / \/ / \\ //__ / /__ / /____ / / \\ // *
* / \ / /\ / \\__// --/ /---/ /----// / \\_// *
* O O /_/ \/ \__/ \_\/ /_/ /_/ ____/_/ *
* *
* *
* Multi-Rotor controller firmware for Nuvoton Cortex M4 series *
* *
* Written by by T.L. Shen for Nuvoton Technology. *
* tlshen@nuvoton.com/tzulan611126@gmail.com *
* *
*============================================================================*
*/
#ifndef MS5611_H
#define MS5611_H
#include <stdbool.h>
// addresses of the device
#define MS5611_ADDR_CSB_HIGH 0x76 //CBR=1 0x76 I2C address when CSB is connected to HIGH (VCC)
#define MS5611_ADDR_CSB_LOW 0x77 //CBR=0 0x77 I2C address when CSB is connected to LOW (GND)
// registers of the device
#define MS5611_D1 0x40
#define MS5611_D2 0x50
#define MS5611_RESET 0x1E
// D1 and D2 result size (bytes)
#define MS5611_D1D2_SIZE 3
// OSR (Over Sampling Ratio) constants
#define MS5611_OSR_256 0x00
#define MS5611_OSR_512 0x02
#define MS5611_OSR_1024 0x04
#define MS5611_OSR_2048 0x06
#define MS5611_OSR_4096 0x08
#define MS5611_OSR_DEFAULT MS5611_OSR_4096
#define MS5611_PROM_BASE_ADDR 0xA2 // by adding ints from 0 to 6 we can read all the prom configuration values.
// C1 will be at 0xA2 and all the subsequent are multiples of 2
#define MS5611_PROM_REG_COUNT 6 // number of registers in the PROM
#define MS5611_PROM_REG_SIZE 2 // size in bytes of a prom registry.
// Self test parameters. Only checks that values are sane
#define MS5611_ST_PRESS_MAX (1100.0) //mbar
#define MS5611_ST_PRESS_MIN (450.0) //mbar
#define MS5611_ST_TEMP_MAX (60.0) //degree celcius
#define MS5611_ST_TEMP_MIN (-20.0) //degree celcius
// Constants used to determine altitude from pressure
#define CONST_SEA_PRESSURE 102610.f //1026.1f //http://www.meteo.physik.uni-muenchen.de/dokuwiki/doku.php?id=wetter:stadt:messung
#define CONST_PF 0.1902630958 //(1/5.25588f) Pressure factor
#define CONST_PF2 44330.0f
bool ms5611Init(void);
bool ms5611SelfTest(void);
bool ms5611EvaluateSelfTest(float min, float max, float value, char* string);
float ms5611GetPressure(uint8_t osr);
float ms5611CalcPressure(int32_t rawPress, int32_t dT);
float ms5611GetTemperature(uint8_t osr);
float ms5611CalcTemp(int32_t deltaT);
int32_t ms5611GetDeltaTemp(uint8_t osr);
int32_t ms5611CalcDeltaTemp(int32_t rawTemp);
int32_t ms5611RawPressure(uint8_t osr);
int32_t ms5611RawTemperature(uint8_t osr);
bool ms5611ReadPROM(void);
void ms5611Reset(void);
void ms5611StartConversion(uint8_t command);
int32_t ms5611GetConversion(uint8_t command);
bool ms5611GetData(float* pressure, float* temperature, float* asl);
float ms5611PressureToAltitude(float* pressure);
#endif // MS5611_H