Oscar de Jesus Vasquez / Mbed 2 deprecated SAT_OLED

Sat program

Dependencies:   Adafruit_GFX Adafruit_RTCLib BMP180 L3GD20 LSM303DLHC SHTx mbed

MS5803/MS5803.cpp@2:b5346ebd1e3c, 2016-05-24 (annotated)

Committer:
oscarvzfz
Date:
Tue May 24 00:01:20 2016 +0000
Revision:
2:b5346ebd1e3c
Parent:
0:07c50519b515 
;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
oscarvzfz 0:07c50519b515 1 /*
oscarvzfz 0:07c50519b515 2 Permission is hereby granted, free of charge, to any person obtaining a copy
oscarvzfz 0:07c50519b515 3 of this software and associated documentation files (the "Software"), to deal
oscarvzfz 0:07c50519b515 4 in the Software without restriction, including without limitation the rights
oscarvzfz 0:07c50519b515 5 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
oscarvzfz 0:07c50519b515 6 copies of the Software, and to permit persons to whom the Software is
oscarvzfz 0:07c50519b515 7 furnished to do so, subject to the following conditions:
oscarvzfz 0:07c50519b515 8
oscarvzfz 0:07c50519b515 9 The above copyright notice and this permission notice shall be included in
oscarvzfz 0:07c50519b515 10 all copies or substantial portions of the Software.
oscarvzfz 0:07c50519b515 11
oscarvzfz 0:07c50519b515 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
oscarvzfz 0:07c50519b515 13 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
oscarvzfz 0:07c50519b515 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
oscarvzfz 0:07c50519b515 15 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
oscarvzfz 0:07c50519b515 16 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
oscarvzfz 0:07c50519b515 17 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
oscarvzfz 0:07c50519b515 18 THE SOFTWARE.
oscarvzfz 0:07c50519b515 19
oscarvzfz 0:07c50519b515 20 * Barometer Sensor (Altimeter) MS5803-01BA of MEAS Switzerland (www.meas-spec.com).
oscarvzfz 0:07c50519b515 21 * The driver uses I2C mode (sensor PS pin low).
oscarvzfz 0:07c50519b515 22 * Other types of MEAS are compatible but not tested.
oscarvzfz 0:07c50519b515 23 * Written by Raig Kaufer distribute freely!
oscarvzfz 0:07c50519b515 24 */
oscarvzfz 0:07c50519b515 25
oscarvzfz 0:07c50519b515 26 #include <stdlib.h>
oscarvzfz 0:07c50519b515 27 #include "MS5803.h"
oscarvzfz 0:07c50519b515 28
oscarvzfz 0:07c50519b515 29
oscarvzfz 0:07c50519b515 30 /*
oscarvzfz 0:07c50519b515 31 * Sensor operating function according data sheet
oscarvzfz 0:07c50519b515 32 */
oscarvzfz 0:07c50519b515 33
oscarvzfz 0:07c50519b515 34 /* Send soft reset to the sensor */
oscarvzfz 0:07c50519b515 35 void MS5803::MS5803Reset(void) {
oscarvzfz 0:07c50519b515 36 /* transmit out 1 byte reset command */
oscarvzfz 0:07c50519b515 37 ms5803_tx_data[0] = ms5803_reset;
oscarvzfz 0:07c50519b515 38 if ( i2c.write( device_address, ms5803_tx_data, 1 ) );
oscarvzfz 0:07c50519b515 39 wait_ms(20);
oscarvzfz 0:07c50519b515 40 }
oscarvzfz 0:07c50519b515 41
oscarvzfz 0:07c50519b515 42 /* read the sensor calibration data from rom */
oscarvzfz 0:07c50519b515 43 void MS5803::MS5803ReadProm(void) {
oscarvzfz 0:07c50519b515 44 uint8_t i,j;
oscarvzfz 0:07c50519b515 45 for (i=0; i<8; i++) {
oscarvzfz 0:07c50519b515 46 j = i;
oscarvzfz 0:07c50519b515 47 ms5803_tx_data[0] = ms5803_PROMread + (j<<1);
oscarvzfz 0:07c50519b515 48 if ( i2c.write( device_address, ms5803_tx_data, 1 ) );
oscarvzfz 0:07c50519b515 49 if ( i2c.read( device_address, ms5803_rx_data, 2 ) );
oscarvzfz 0:07c50519b515 50 C[i] = ms5803_rx_data[1] + (ms5803_rx_data[0]<<8);
oscarvzfz 0:07c50519b515 51 }
oscarvzfz 0:07c50519b515 52 }
oscarvzfz 0:07c50519b515 53
oscarvzfz 0:07c50519b515 54 /* Start the sensor pressure conversion */
oscarvzfz 0:07c50519b515 55 void MS5803::MS5803ConvertD1(void) {
oscarvzfz 0:07c50519b515 56 ms5803_tx_data[0] = ms5803_convD1;
oscarvzfz 0:07c50519b515 57 if ( i2c.write( device_address, ms5803_tx_data, 1 ) );
oscarvzfz 0:07c50519b515 58 }
oscarvzfz 0:07c50519b515 59
oscarvzfz 0:07c50519b515 60 /* Start the sensor temperature conversion */
oscarvzfz 0:07c50519b515 61 void MS5803:: MS5803ConvertD2(void) {
oscarvzfz 0:07c50519b515 62 ms5803_tx_data[0] = ms5803_convD2;
oscarvzfz 0:07c50519b515 63 if ( i2c.write( device_address, ms5803_tx_data, 1 ) );
oscarvzfz 0:07c50519b515 64 }
oscarvzfz 0:07c50519b515 65
oscarvzfz 0:07c50519b515 66 /* Read the privious started conversion results */
oscarvzfz 0:07c50519b515 67 int32_t MS5803::MS5803ReadADC(void) {
oscarvzfz 0:07c50519b515 68 int32_t adc;
oscarvzfz 0:07c50519b515 69 wait_ms(150);
oscarvzfz 0:07c50519b515 70 ms5803_tx_data[0] = ms5803_ADCread;
oscarvzfz 0:07c50519b515 71 if ( i2c.write( device_address, ms5803_tx_data, 1 ) );
oscarvzfz 0:07c50519b515 72 if ( i2c.read( device_address, ms5803_rx_data, 3 ) );
oscarvzfz 0:07c50519b515 73 adc = ms5803_rx_data[2] + (ms5803_rx_data[1]<<8) + (ms5803_rx_data[0]<<16);
oscarvzfz 0:07c50519b515 74 return (adc);
oscarvzfz 0:07c50519b515 75 }
oscarvzfz 0:07c50519b515 76
oscarvzfz 0:07c50519b515 77 /* return the results */
oscarvzfz 0:07c50519b515 78 float MS5803::MS5803_Pressure (void) {
oscarvzfz 0:07c50519b515 79 return P_MS5803;
oscarvzfz 0:07c50519b515 80 }
oscarvzfz 0:07c50519b515 81 float MS5803::MS5803_Temperature (void) {
oscarvzfz 0:07c50519b515 82 return T_MS5803;
oscarvzfz 0:07c50519b515 83 }
oscarvzfz 0:07c50519b515 84
oscarvzfz 0:07c50519b515 85 /* Sensor reading and calculation prcedure */
oscarvzfz 0:07c50519b515 86 void MS5803::Barometer_MS5803(void) {
oscarvzfz 0:07c50519b515 87 int32_t dT, temp;
oscarvzfz 0:07c50519b515 88 int64_t OFF, SENS, press;
oscarvzfz 0:07c50519b515 89
oscarvzfz 0:07c50519b515 90 MS5803Reset(); // reset the sensor
oscarvzfz 0:07c50519b515 91 MS5803ReadProm(); // read the calibration values
oscarvzfz 0:07c50519b515 92 MS5803ConvertD1(); // start pressure convertion
oscarvzfz 0:07c50519b515 93 D1 = MS5803ReadADC(); // read the pressure value
oscarvzfz 0:07c50519b515 94 MS5803ConvertD2(); // start temperature convertion
oscarvzfz 0:07c50519b515 95 D2 = MS5803ReadADC(); // read the temperature value
oscarvzfz 0:07c50519b515 96
oscarvzfz 0:07c50519b515 97 /* calculation according MS5803-01BA data sheet DA5803-01BA_006 */
oscarvzfz 0:07c50519b515 98 dT = D2 - (C[5]* 256);
oscarvzfz 0:07c50519b515 99 OFF = (int64_t)C[2] * (1<<16) + ((int64_t)dT * (int64_t)C[4]) / (1<<7);
oscarvzfz 0:07c50519b515 100 SENS = (int64_t)C[1] * (1<<15) + ((int64_t)dT * (int64_t)C[3]) / (1<<8);
oscarvzfz 0:07c50519b515 101
oscarvzfz 0:07c50519b515 102 temp = 2000 + (dT * C[6]) / (1<<23);
oscarvzfz 0:07c50519b515 103 T_MS5803 = (float) temp / 100.0f; // result of temperature in deg C in this var
oscarvzfz 0:07c50519b515 104 press = (((int64_t)D1 * SENS) / (1<<21) - OFF) / (1<<15);
oscarvzfz 0:07c50519b515 105 P_MS5803 = (float) press / 100.0f; // result of pressure in mBar in this var
oscarvzfz 0:07c50519b515 106 }