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BusInOut.cpp
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #include "BusInOut.h" 00017 00018 namespace mbed { 00019 00020 BusInOut::BusInOut(PinName p0, PinName p1, PinName p2, PinName p3, PinName p4, PinName p5, PinName p6, PinName p7, PinName p8, PinName p9, PinName p10, PinName p11, PinName p12, PinName p13, PinName p14, PinName p15) { 00021 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15}; 00022 00023 for (int i=0; i<16; i++) { 00024 _pin[i] = (pins[i] != NC) ? new DigitalInOut(pins[i]) : 0; 00025 } 00026 } 00027 00028 BusInOut::BusInOut(PinName pins[16]) { 00029 for (int i=0; i<16; i++) { 00030 _pin[i] = (pins[i] != NC) ? new DigitalInOut(pins[i]) : 0; 00031 } 00032 } 00033 00034 BusInOut::~BusInOut() { 00035 for (int i=0; i<16; i++) { 00036 if (_pin[i] != 0) { 00037 delete _pin[i]; 00038 } 00039 } 00040 } 00041 00042 void BusInOut::write(int value) { 00043 for (int i=0; i<16; i++) { 00044 if (_pin[i] != 0) { 00045 _pin[i]->write((value >> i) & 1); 00046 } 00047 } 00048 } 00049 00050 int BusInOut::read() { 00051 int v = 0; 00052 for (int i=0; i<16; i++) { 00053 if (_pin[i] != 0) { 00054 v |= _pin[i]->read() << i; 00055 } 00056 } 00057 return v; 00058 } 00059 00060 void BusInOut::output() { 00061 for (int i=0; i<16; i++) { 00062 if (_pin[i] != 0) { 00063 _pin[i]->output(); 00064 } 00065 } 00066 } 00067 00068 void BusInOut::input() { 00069 for (int i=0; i<16; i++) { 00070 if (_pin[i] != 0) { 00071 _pin[i]->input(); 00072 } 00073 } 00074 } 00075 00076 void BusInOut::mode(PinMode pull) { 00077 for (int i=0; i<16; i++) { 00078 if (_pin[i] != 0) { 00079 _pin[i]->mode(pull); 00080 } 00081 } 00082 } 00083 00084 #ifdef MBED_OPERATORS 00085 BusInOut& BusInOut::operator= (int v) { 00086 write(v); 00087 return *this; 00088 } 00089 00090 BusInOut& BusInOut::operator= (BusInOut& rhs) { 00091 write(rhs.read()); 00092 return *this; 00093 } 00094 00095 BusInOut::operator int() { 00096 return read(); 00097 } 00098 #endif 00099 00100 } // namespace mbed
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