PCA9532.h

00001 /* mbed PCF9532 LED Driver Library
00002  *
00003  * Copyright (c) 2010, cstyles (http://mbed.org)
00004  *
00005  * Permission is hereby granted, free of charge, to any person obtaining a copy
00006  * of this software and associated documentation files (the "Software"), to deal
00007  * in the Software without restriction, including without limitation the rights
00008  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009  * copies of the Software, and to permit persons to whom the Software is
00010  * furnished to do so, subject to the following conditions:
00011  *
00012  * The above copyright notice and this permission notice shall be included in
00013  * all copies or substantial portions of the Software.
00014  *
00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021  * THE SOFTWARE.
00022  */
00023 
00024 #ifndef PCA9532_H
00025 #define PCA9532_H
00026 
00027 #include "mbed.h"
00028 
00029 // register names
00030 #define PCA9532_REG_INPUT0 0
00031 #define PCA9532_REG_INPUT1 1
00032 #define PCA9532_REG_PSC0   2
00033 #define PCA9532_REG_PWM0   3
00034 #define PCA9532_REG_PSC1   4
00035 #define PCA9532_REG_PWM1   5
00036 #define PCA9532_REG_LS0    6
00037 #define PCA9532_REG_LS1    7
00038 #define PCA9532_REG_LS2    8
00039 #define PCA9532_REG_LS3    9
00040 
00041 // LED modes
00042 #define MODE_OFF  0
00043 #define MODE_ON   1
00044 #define MODE_PWM0 2
00045 #define MODE_PWM1 3
00046 
00047 class PCA9532 {
00048 
00049 public:
00050 
00051     PCA9532(PinName sda, PinName scl, int addr);
00052 
00053     int SetLed  (int led, int mode);
00054     int SetMode (int mask, int mode);
00055     int Duty (int channel, float duty);
00056     int Period (int channel, float period);
00057 
00058 protected:
00059 
00060     void _write(int reg, int data);
00061     int _read(int reg);
00062     int _addr;
00063     I2C _i2c;
00064 
00065 };
00066 
00067 
00068 #endif