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