1 | /*
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2 | ****************************************************************************
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3 | * Copyright (c) 2015 Arduino srl. All right reserved.
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4 | *
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5 | * File : CAT9555.cpp
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6 | * Date : 2016/03/21
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7 | * Revision : 0.0.1 $
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8 | * Author: andrea[at]arduino[dot]org
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9 | *
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10 | ****************************************************************************
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11 |
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12 | This library is free software; you can redistribute it and/or
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13 | modify it under the terms of the GNU Lesser General Public
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14 | License as published by the Free Software Foundation; either
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15 | version 2.1 of the License, or (at your option) any later version.
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16 |
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17 | This library is distributed in the hope that it will be useful,
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18 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | Lesser General Public License for more details.
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21 |
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22 | You should have received a copy of the GNU Lesser General Public
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23 | License along with this library; if not, write to the Free Software
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24 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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25 |
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26 | ******************************************************************************/
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27 |
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28 | #include "CAT9555.h"
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29 | #include <Wire.h>
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30 |
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31 | // CONSTRUCTUR
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32 | CAT9555::CAT9555(uint8_t addr)
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33 | {
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34 | address = addr; // Store address into private variable
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35 | }
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36 |
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37 | void CAT9555::begin(){
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38 |
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39 | writeRegister(CONFIG_PORT0, 0x0E); // setup direction register port0
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40 | writeRegister(CONFIG_PORT1, 0x7F); // setup direction register port1
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41 | writeRegister(OUTPUT_PORT0, 0x3c); // set all output pin to LOW level
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42 |
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43 | }
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44 |
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45 | void CAT9555::digitalWrite(int PIN, int data){
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46 |
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47 | uint8_t data_reg = read_8_Register(INPUT_PORT0);
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48 | if (data == HIGH )
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49 | if (PIN == LED1 || PIN == LED2)
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50 | data_reg = ~PIN >> 8 & data_reg;
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51 | else
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52 | data_reg = PIN >> 8 | data_reg;
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53 | else if (data == LOW)
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54 | if (PIN == LED1 || PIN == LED2)
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55 | data_reg = PIN >> 8 | data_reg;
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56 | else
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57 | data_reg = (0xFF ^ PIN >> 8) & data_reg;
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58 | writeRegister(OUTPUT_PORT0, data_reg);
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59 | data_reg = read_8_Register(INPUT_PORT0);
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60 |
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61 | }
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62 |
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63 | int CAT9555::digitalRead(int PIN){
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64 |
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65 | uint16_t data = read_16_Register(INPUT_PORT0);
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66 | //Serial.println(data,BIN);
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67 | int result = (data ^ 0x30FF) & PIN; //0xFFFF
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68 | if (result)
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69 | return HIGH;
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70 | else
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71 | return result;
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72 |
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73 | }
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74 | // WRITE REGISTER
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75 | void CAT9555::writeRegister(int reg, int data)
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76 | {
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77 |
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78 | Wire.beginTransmission(address);
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79 | Wire.write(reg);
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80 | Wire.write(data);
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81 | Wire.endTransmission();
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82 | }
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83 |
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84 |
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85 | uint8_t CAT9555::read_8_Register(int reg)
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86 | {
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87 | uint8_t _data0;
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88 | Wire.beginTransmission(address);
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89 | Wire.write(reg);
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90 | Wire.endTransmission();
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91 | Wire.requestFrom(address, (byte)1);
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92 | if(Wire.available()) {
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93 | _data0 = Wire.read();
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94 | }
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95 | return _data0;
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96 | }
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97 | // READ REGISTER
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98 | uint16_t CAT9555::read_16_Register(int reg)
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99 | {
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100 | uint16_t _data0;
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101 | Wire.beginTransmission(address);
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102 | Wire.write(reg);
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103 | Wire.endTransmission();
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104 | Wire.requestFrom(address, (byte)2);
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105 | if(Wire.available()) {
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106 | _data0 = Wire.read() << 8 ;
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107 | }
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108 | if(Wire.available()) {
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109 | _data0 |= Wire.read();
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110 | }
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111 |
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112 | return _data0;
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113 | }
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114 |
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115 | CAT9555 cat9555;
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