Diff: MS5607Base.h

Revision:

1:847720b736ea

Parent:

0:5760862143d1

--- a/MS5607Base.h	Tue Jul 03 08:57:57 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,121 +0,0 @@
-/*
-Copyright (c) 2012, Senio Networks, Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-#ifndef MS5607_BASE_H
-#define MS5607_BASE_H
-
-class MS5607Base {
-public:
-    void printCoefficients() {
-        printf("%d, %d, %d, %d, %d, %d\n", c1, c2, c3, c4, c5, c6);
-    }
-
-    int getRawTemperature() {
-        return readADC(ADC_D2 | OSR_4096);
-    }
-
-    int getRawPressure() {
-        return readADC(ADC_D1 | OSR_4096);
-    }
-
-    float getTemperature() {
-        int dT = getRawTemperature() - (c5 << 8);
-        int temp = 2000 + ((dT * c6) >> 23);
-        
-        // 2nd order temperature compensation
-        if (temp < 2000) {
-            int t2 = (int64_t) dT * dT >> 31;
-            temp -= t2;
-        }
-
-        return float(temp) / 100;
-    }
-
-    float getPressure() {
-        int dT = getRawTemperature() - (c5 << 8);
-        int temp = 2000 + ((dT * c6) >> 23);
-        int64_t off = ((int64_t) c2 << 17) + ((int64_t) dT * c4 >> 6);
-        int64_t sens = ((int64_t) c1 << 16) + ((int64_t) dT * c3 >> 7);
-
-        // 2nd order temperature compensation
-        if (temp < 2000) {
-            int64_t off2 = (int64_t) 61 * (temp - 2000) * (temp - 2000) >> 4;
-            int64_t sens2 = (int64_t) 2 * (temp - 2000) * (temp - 2000);
-            if (temp < -1500) {
-                off2 += (int64_t) 15 * (temp + 1500) * (temp + 1500);
-                sens2 += (int64_t) 8 * (temp + 1500) * (temp + 1500);
-            }
-            off -= off2;
-            sens -= sens2;
-        }
-
-        return float((((int64_t) getRawPressure() * sens >> 21) - off) >> 15);
-    }
-
-    float getAltitude(int presssure = 0) {
-        return toAltitude(presssure ? presssure : (int) getPressure());
-    }
-
-protected:
-    int32_t c1, c2, c3, c4, c5, c6;
-
-    enum {
-        RESET     = 0x1E,
-        ADC_READ  = 0x00,
-        ADC_CONV  = 0x40,
-        ADC_D1    = 0x00,
-        ADC_D2    = 0x10,
-        OSR_256   = 0x00,
-        OSR_512   = 0x02,
-        OSR_1024  = 0x04,
-        OSR_2048  = 0x06,
-        OSR_4096  = 0x08,
-        PROM_READ = 0xA0
-    };
-
-    virtual void writeCommand(int command, int ms = 0) = 0;
-    virtual int readPROM(int address) = 0;
-    virtual int readADC(int command) = 0;
-
-    void init() {
-        writeCommand(RESET, 3);
-        c1 = readPROM(1);
-        c2 = readPROM(2);
-        c3 = readPROM(3);
-        c4 = readPROM(4);
-        c5 = readPROM(5);
-        c6 = readPROM(6);
-    }
-
-    float toAltitude(int pressure) {
-        // Ref. 29124-AltimeterAppNote1.pdf
-        const float R = 287.052; // specific gas constant R*/M0
-        const float g = 9.80665; // standard gravity 
-        const float t_grad = 0.0065; // gradient of temperature
-        const float t0 = 273.15 + 15; // temperature at 0 altitude
-        const float p0 = 101325; // pressure at 0 altitude
-
-        return t0 / t_grad * (1 - exp((t_grad * R / g) * log(pressure / p0)));
-    }
-};
-
-#endif
\ No newline at end of file