MS5611I2C.h

00001 /*
00002 Copyright (c) 2012, Senio Networks, Inc.
00003 
00004 Permission is hereby granted, free of charge, to any person obtaining a copy
00005 of this software and associated documentation files (the "Software"), to deal
00006 in the Software without restriction, including without limitation the rights
00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008 copies of the Software, and to permit persons to whom the Software is
00009 furnished to do so, subject to the following conditions:
00010 
00011 The above copyright notice and this permission notice shall be included in
00012 all copies or substantial portions of the Software.
00013 
00014 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020 THE SOFTWARE.
00021 */
00022 
00023 /*  MS5611 Modifications
00024 Aerodyne Labs
00025 Matthew Nelson - 2014
00026 This library was originally the MS5607 library.  It has been modified to 
00027 to be used the MS5611 Pressure sensor
00028 */
00029 
00030 #ifndef MS5611_I2C_H
00031 #define MS5611_I2C_H
00032 
00033 #include "MS5611Base.h"
00034 
00035 extern Serial pc;
00036 
00037 class MS5611I2C : public MS5611Base {
00038 public:
00039     MS5611I2C(I2C &i2c, int csb = 0) : i2c(i2c), i2cAddr(csb ? 0xEC : 0xEE) {
00040     wait(.01);
00041     i2c.frequency(400000);
00042     wait(.01);
00043     init();
00044     ADC_toggler = false;
00045     }
00046 
00047 private:
00048     I2C &i2c;
00049     int i2cAddr;
00050     bool ADC_toggler;
00051 
00052     virtual void writeCommand(int command, int ms = 0) {
00053         char buf[1];
00054         buf[0] = command;
00055         i2c.write(i2cAddr, buf, 1);
00056         if (ms) wait_ms(ms);
00057     }
00058 
00059     virtual int readPROM(int address) {
00060             char buf[2];
00061             buf[0] = (PROM_READ | (address << 1));
00062 
00063         if (i2c.write(i2cAddr, buf, 1) == 0 &&
00064             i2c.read(i2cAddr, buf, 2) == 0)
00065             return buf[0] << 8 | buf[1];
00066 
00067         return -1;
00068     }
00069 
00070     virtual int readADC(int command) {
00071         char cmd[1];
00072         cmd[0] = (ADC_CONV | command);
00073         if (i2c.write(i2cAddr, cmd, 1) == 0) {
00074             static int duration[] = {500, 1100, 2100, 4100, 8220};        // OSR_4096
00075             wait_us(duration[(command & 0x0F) >> 1]);
00076             cmd[0] = ADC_READ;
00077             char buf[3];
00078             if (i2c.write(i2cAddr, cmd, sizeof(cmd)) == 0 &&
00079                 i2c.read(i2cAddr, buf, sizeof(buf)) == 0){
00080                 return buf[0] << 16 | buf[1] << 8 | buf[2];
00081                 }
00082         }
00083         return -1;
00084     }
00085     virtual int readADC_write(int command) {
00086         char cmd[1];
00087         cmd[0] = (ADC_CONV | command);
00088         return (i2c.write(i2cAddr, cmd, 1)==0);
00089     }
00090 
00091     virtual int readADC_read(int command) {
00092         char cmd[1];
00093         cmd[0] = ADC_READ;
00094         char buf[3];
00095         if (i2c.write(i2cAddr, cmd, sizeof(cmd)) == 0 &&
00096             i2c.read(i2cAddr, buf, sizeof(buf)) == 0){
00097                      return buf[0] << 16 | buf[1] << 8 | buf[2];
00098             }
00099         return -1;
00100     }
00101 };
00102 
00103 #endif