MS5803.h

00001 /*
00002     Permission is hereby granted, free of charge, to any person obtaining a copy
00003     of this software and associated documentation files (the "Software"), to deal
00004     in the Software without restriction, including without limitation the rights
00005     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00006     copies of the Software, and to permit persons to whom the Software is
00007     furnished to do so, subject to the following conditions:
00008 
00009     The above copyright notice and this permission notice shall be included in
00010     all copies or substantial portions of the Software.
00011 
00012     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00013     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00014     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00015     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00016     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00018     THE SOFTWARE.
00019 
00020   * Library for Pressure Sensors of type MS5803-x of MEAS Switzerland     (www.meas-spec.com).
00021   * The driver uses I2C mode (sensor's Protocol Select (PS) pin pulled to high). 
00022   * MS5803-01BA (Barometer Sensor (Altimeter)) was successfully tested by Raig Kaufer.
00023   * MS5803-14BA (Underwater Pressure Sensor 14 bar) was successfully tested by Robert Katzschmann
00024   * Other types of MEAS are compatible but not tested 
00025   * Written by Raig Kaufer, distribute freely!
00026   * Revised by Robert Katzschmann
00027  */
00028 #include "mbed.h"
00029 
00030 #ifndef MS5803_H
00031 #define MS5803_H
00032 
00033 #define MS5803_RX_DEPTH 3 //
00034 #define MS5803_TX_DEPTH 2 //
00035 
00036 // choose your connection here
00037 #define ms5803_addrCL 0x77 //0b1110111  CSB Pin is low
00038 #define ms5803_addrCH 0x76 //0b1110110  CSB Pin is high 
00039 
00040 #define ms5803_reset       0x1E // Sensor Reset
00041 
00042 #define ms5803_convD1_256  0x40 // Convert D1 OSR 256
00043 #define ms5803_convD1_512  0x42 // Convert D1 OSR  512
00044 #define ms5803_convD1_1024 0x44 // Convert D1 OSR 1024
00045 #define ms5803_convD1_2048 0x46 // Convert D1 OSR 2048
00046 #define ms5803_convD1_4096 0x48 // Convert D1 OSR 2048
00047 
00048 #define ms5803_convD1 ms5803_convD1_4096 // choose your sampling rate here
00049 
00050 #define ms5803_convD2_256  0x50 // Convert D2 OSR  256
00051 #define ms5803_convD2_512  0x52 // Convert D2 OSR  512
00052 #define ms5803_convD2_1024 0x54 // Convert D2 OSR 1024
00053 #define ms5803_convD2_2048 0x56 // Convert D2 OSR 2048
00054 #define ms5803_convD2_4096 0x58 // Convert D2 OSR 2048
00055 
00056 #define ms5803_convD2 ms5803_convD2_4096 // choose your sampling rate here
00057 
00058 #define ms5803_ADCread     0x00 // read ADC command
00059 #define ms5803_PROMread    0xA0 // read PROM command base address
00060 
00061 class MS5803{
00062 private:
00063     int D1, D2, Temp;
00064     unsigned int C[8];
00065     float T_MS5803, P_MS5803;
00066     /* Data buffers */
00067     char ms5803_rx_data[MS5803_RX_DEPTH];
00068     char ms5803_tx_data[MS5803_TX_DEPTH];
00069 
00070 public:
00071     MS5803 (PinName sda, PinName scl,
00072             char ms5803_addr = ms5803_addrCH  )
00073             : i2c( sda, scl ), device_address( ms5803_addr << 1 ) {
00074     }
00075     void MS5803Init(void);
00076     void MS5803Reset(void);
00077     void MS5803ReadProm(void);
00078     void MS5803ConvertD1(void);
00079     void MS5803ConvertD2(void);
00080     int32_t MS5803ReadADC(void);
00081     float MS5803_Pressure (void);
00082     float MS5803_Temperature (void);
00083     void Barometer_MS5803(void);
00084 
00085 
00086 private:
00087     I2C     i2c;
00088     char    device_address;
00089 
00090 };
00091 #endif