Senior Design / Mbed 2 deprecated MAX7314_Expander

Developing Library for the MAX7314 I2C 16-bit I/O Expander w/ PWM

Dependencies:   mbed PCA9538_Expander

PCF8575.cpp@0:7e32b01354d3, 2011-04-13 (annotated)

Committer:
uasenden
Date:
Wed Apr 13 23:17:22 2011 +0000
Revision:
0:7e32b01354d3
Rev 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uasenden 0:7e32b01354d3 1 /* mbed PCF8574 Library, for driving the I2C I/O Expander
uasenden 0:7e32b01354d3 2 * Copyright (c) 2008-2010, cstyles, sford (Originally PCF8574 lib)
uasenden 0:7e32b01354d3 3 * new created by Lerche
uasenden 0:7e32b01354d3 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
uasenden 0:7e32b01354d3 5 * of this software and associated documentation files (the "Software"), to deal
uasenden 0:7e32b01354d3 6 * in the Software without restriction, including without limitation the rights
uasenden 0:7e32b01354d3 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
uasenden 0:7e32b01354d3 8 * copies of the Software, and to permit persons to whom the Software is
uasenden 0:7e32b01354d3 9 * furnished to do so, subject to the following conditions:
uasenden 0:7e32b01354d3 10 *
uasenden 0:7e32b01354d3 11 * The above copyright notice and this permission notice shall be included in
uasenden 0:7e32b01354d3 12 * all copies or substantial portions of the Software.
uasenden 0:7e32b01354d3 13 *
uasenden 0:7e32b01354d3 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
uasenden 0:7e32b01354d3 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
uasenden 0:7e32b01354d3 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
uasenden 0:7e32b01354d3 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
uasenden 0:7e32b01354d3 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
uasenden 0:7e32b01354d3 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
uasenden 0:7e32b01354d3 20 * THE SOFTWARE.
uasenden 0:7e32b01354d3 21 */
uasenden 0:7e32b01354d3 22
uasenden 0:7e32b01354d3 23 #include "PCF8575.h"
uasenden 0:7e32b01354d3 24 #include "mbed.h"
uasenden 0:7e32b01354d3 25
uasenden 0:7e32b01354d3 26 PCF8575::PCF8575(PinName sda, PinName scl, int address)
uasenden 0:7e32b01354d3 27 : _i2c(sda, scl) {
uasenden 0:7e32b01354d3 28 _address = address;
uasenden 0:7e32b01354d3 29 }
uasenden 0:7e32b01354d3 30
uasenden 0:7e32b01354d3 31 int PCF8575::read() {
uasenden 0:7e32b01354d3 32 char foo[2];
uasenden 0:7e32b01354d3 33 _i2c.read(_address, foo, 2);
uasenden 0:7e32b01354d3 34 return (foo[0] << 8) | foo[1];
uasenden 0:7e32b01354d3 35 }
uasenden 0:7e32b01354d3 36
uasenden 0:7e32b01354d3 37 void PCF8575::write(int data) {
uasenden 0:7e32b01354d3 38 char foo[2];
uasenden 0:7e32b01354d3 39 foo[0]=data;
uasenden 0:7e32b01354d3 40 foo[1]=data>>8;
uasenden 0:7e32b01354d3 41 _i2c.write(_address, foo, 2);
uasenden 0:7e32b01354d3 42 }