The official mbed C/C SDK provides the software platform and libraries to build your applications.
Fork of mbed by
DigitalInOut.h
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 #ifndef MBED_DIGITALINOUT_H 00017 #define MBED_DIGITALINOUT_H 00018 00019 #include "platform.h" 00020 00021 #include "gpio_api.h" 00022 00023 namespace mbed { 00024 00025 /** A digital input/output, used for setting or reading a bi-directional pin 00026 */ 00027 class DigitalInOut { 00028 00029 public: 00030 /** Create a DigitalInOut connected to the specified pin 00031 * 00032 * @param pin DigitalInOut pin to connect to 00033 */ 00034 DigitalInOut(PinName pin) { 00035 gpio_init(&gpio, pin, PIN_INPUT); 00036 } 00037 00038 /** Set the output, specified as 0 or 1 (int) 00039 * 00040 * @param value An integer specifying the pin output value, 00041 * 0 for logical 0, 1 (or any other non-zero value) for logical 1 00042 */ 00043 void write(int value) { 00044 gpio_write(&gpio, value); 00045 } 00046 00047 /** Return the output setting, represented as 0 or 1 (int) 00048 * 00049 * @returns 00050 * an integer representing the output setting of the pin if it is an output, 00051 * or read the input if set as an input 00052 */ 00053 int read() { 00054 return gpio_read(&gpio); 00055 } 00056 00057 /** Set as an output 00058 */ 00059 void output() { 00060 gpio_dir(&gpio, PIN_OUTPUT); 00061 } 00062 00063 /** Set as an input 00064 */ 00065 void input() { 00066 gpio_dir(&gpio, PIN_INPUT); 00067 } 00068 00069 /** Set the input pin mode 00070 * 00071 * @param mode PullUp, PullDown, PullNone, OpenDrain 00072 */ 00073 void mode(PinMode pull) { 00074 gpio_mode(&gpio, pull); 00075 } 00076 00077 #ifdef MBED_OPERATORS 00078 /** A shorthand for write() 00079 */ 00080 DigitalInOut& operator= (int value) { 00081 write(value); 00082 return *this; 00083 } 00084 00085 DigitalInOut& operator= (DigitalInOut& rhs) { 00086 write(rhs.read()); 00087 return *this; 00088 } 00089 00090 /** A shorthand for read() 00091 */ 00092 operator int() { 00093 return read(); 00094 } 00095 #endif 00096 00097 protected: 00098 gpio_t gpio; 00099 }; 00100 00101 } // namespace mbed 00102 00103 #endif
Generated on Sat Jul 16 2022 06:59:32 by 1.7.2