[175] | 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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[224] | 31 | #ifdef __SAM3X8E__
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| 32 | #define Wire Wire1
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| 33 | #endif
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| 34 |
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[175] | 35 | // CONSTRUCTUR
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| 36 | CAT9555::CAT9555(uint8_t addr)
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| 37 | {
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| 38 | address = addr; // Store address into private variable
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| 39 | }
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| 40 |
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| 41 | void CAT9555::begin(){
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| 42 |
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| 43 | writeRegister(CONFIG_PORT0, 0x0E); // setup direction register port0
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| 44 | writeRegister(CONFIG_PORT1, 0x7F); // setup direction register port1
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| 45 | writeRegister(OUTPUT_PORT0, 0x3c); // set all output pin to LOW level
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| 46 |
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| 47 | }
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| 48 |
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| 49 | void CAT9555::digitalWrite(int PIN, int data){
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| 50 |
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| 51 | uint8_t data_reg = read_8_Register(INPUT_PORT0);
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| 52 | if (data == HIGH )
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| 53 | if (PIN == LED1 || PIN == LED2)
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| 54 | data_reg = ~PIN >> 8 & data_reg;
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| 55 | else
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| 56 | data_reg = PIN >> 8 | data_reg;
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| 57 | else if (data == LOW)
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| 58 | if (PIN == LED1 || PIN == LED2)
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| 59 | data_reg = PIN >> 8 | data_reg;
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| 60 | else
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| 61 | data_reg = (0xFF ^ PIN >> 8) & data_reg;
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| 62 | writeRegister(OUTPUT_PORT0, data_reg);
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| 63 | data_reg = read_8_Register(INPUT_PORT0);
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| 64 |
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| 65 | }
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| 66 |
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| 67 | int CAT9555::digitalRead(int PIN){
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| 68 |
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| 69 | uint16_t data = read_16_Register(INPUT_PORT0);
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| 70 | //Serial.println(data,BIN);
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| 71 | int result = (data ^ 0x30FF) & PIN; //0xFFFF
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| 72 | if (result)
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| 73 | return HIGH;
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| 74 | else
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| 75 | return result;
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| 76 |
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| 77 | }
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| 78 | // WRITE REGISTER
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| 79 | void CAT9555::writeRegister(int reg, int data)
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| 80 | {
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| 81 |
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| 82 | Wire.beginTransmission(address);
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| 83 | Wire.write(reg);
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| 84 | Wire.write(data);
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| 85 | Wire.endTransmission();
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| 86 | }
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| 87 |
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| 88 |
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| 89 | uint8_t CAT9555::read_8_Register(int reg)
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| 90 | {
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| 91 | uint8_t _data0;
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| 92 | Wire.beginTransmission(address);
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| 93 | Wire.write(reg);
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| 94 | Wire.endTransmission();
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| 95 | Wire.requestFrom(address, (byte)1);
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| 96 | if(Wire.available()) {
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| 97 | _data0 = Wire.read();
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| 98 | }
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| 99 | return _data0;
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| 100 | }
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| 101 | // READ REGISTER
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| 102 | uint16_t CAT9555::read_16_Register(int reg)
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| 103 | {
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| 104 | uint16_t _data0;
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| 105 | Wire.beginTransmission(address);
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| 106 | Wire.write(reg);
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| 107 | Wire.endTransmission();
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| 108 | Wire.requestFrom(address, (byte)2);
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| 109 | if(Wire.available()) {
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| 110 | _data0 = Wire.read() << 8 ;
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| 111 | }
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| 112 | if(Wire.available()) {
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| 113 | _data0 |= Wire.read();
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| 114 | }
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| 115 |
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| 116 | return _data0;
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| 117 | }
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| 118 |
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| 119 | CAT9555 cat9555;
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