MS5607SPI.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_SPI_H
00024 #define MS5607_SPI_H
00025 
00026 #include "MS5607Base.h"
00027 
00028 class MS5607SPI : public MS5607Base {
00029 public:
00030     MS5607SPI(PinName mosi, PinName miso, PinName sclk, PinName csb) : spi(mosi, miso, sclk), csb(csb) {
00031         init();
00032     }
00033 
00034 private:
00035     SPI spi;
00036     DigitalOut csb;
00037 
00038     virtual void writeCommand(int command, int ms = 0) {
00039         csb = 0;
00040         spi.write(command);
00041         if (ms) wait_ms(ms);
00042         csb = 1;
00043     }
00044 
00045     virtual int readPROM(int address) {
00046         csb = 0;
00047         spi.write(PROM_READ | address << 1);
00048         int hi = spi.write(0);
00049         int low = spi.write(0);
00050         csb = 1;
00051         return hi << 8 | low;
00052     }
00053 
00054     virtual int readADC(int command) {
00055         csb = 0;
00056         spi.write(ADC_CONV | command);
00057         static int duration[] = {500, 1100, 2100, 4100, 8220};
00058         wait_us(duration[(command & 0x0F) >> 1]);
00059         csb = 1;
00060         csb = 0;
00061         spi.write(ADC_READ);
00062         int hi = spi.write(0);
00063         int mid = spi.write(0);
00064         int low = spi.write(0);
00065         csb = 1;
00066         return hi << 16 | mid << 8 | low;
00067     }
00068 };
00069 
00070 #endif