1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
27 /** A multiple pin digital input
31 * // Switch on an LED if any of mbed pins 21-26 is high
35 * PortIn p(Port2, 0x0000003F); // p21-p26
36 * DigitalOut ind(LED4);
40 * int pins = p.read();
53 /** Create an PortIn, connected to the specified port
55 * @param port Port to connect to (Port0-Port5)
56 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
58 PortIn(PortName port, int mask = 0xFFFFFFFF) {
59 port_init(&_port, port, mask, PIN_INPUT);
62 /** Read the value currently output on the port
65 * An integer with each bit corresponding to associated port pin setting
68 return port_read(&_port);
71 /** Set the input pin mode
73 * @param mode PullUp, PullDown, PullNone, OpenDrain
75 void mode(PinMode mode) {
76 port_mode(&_port, mode);
79 /** A shorthand for read()