MS5607I2C.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 #ifndef MS5607_I2C_H
00024 #define MS5607_I2C_H
00025 
00026 #include "mbed.h"
00027 #include "MS5607Base.h"
00028 
00029 class MS5607I2C : public MS5607Base {
00030 public:
00031     MS5607I2C(PinName sda, PinName scl, int csb = 0) : i2c(sda, scl), i2cAddr(csb ? 0xEC : 0xEE) {
00032       //  init();
00033     }
00034 
00035 private:
00036     I2C i2c;
00037     int i2cAddr;
00038 
00039     virtual void writeCommand(int command, int ms = 0) {
00040         char buf[1] = {command};
00041         i2c.write(i2cAddr, buf, 1);
00042         if (ms) wait_ms(ms);
00043     }
00044 
00045     virtual int readPROM(int address) {
00046         char buf[2] = {PROM_READ | (address << 1), 0};
00047 
00048         if (i2c.write(i2cAddr, buf, 1) == 0 &&
00049             i2c.read(i2cAddr, buf, 2) == 0)
00050             return buf[0] << 8 | buf[1];
00051 
00052         return -1;
00053     }
00054 
00055     virtual int readADC(int command) {
00056         char cmd[] = {ADC_CONV | command};
00057 
00058         if (i2c.write(i2cAddr, cmd, sizeof(cmd)) == 0) {
00059             static int duration[] = {500, 1100, 2100, 4100, 8220};
00060             wait_us(duration[(command & 0x0F) >> 1]);
00061             cmd[0] = ADC_READ;
00062             char buf[3];
00063             if (i2c.write(i2cAddr, cmd, sizeof(cmd)) == 0 &&
00064                 i2c.read(i2cAddr, buf, sizeof(buf)) == 0)
00065                 return buf[0] << 16 | buf[1] << 8 | buf[2];
00066         }
00067 
00068         return -1;
00069     }
00070 };
00071 
00072 #endif