Jasper Lee / mbed_helloworld

change some io settings for TWR-K22F-120M

Dependents:   twr_helloworld

PortIn.h@0:b16d94660a33, 2014-12-23 (annotated)

Committer:
Jasper_lee
Date:
Tue Dec 23 03:35:08 2014 +0000
Revision:
0:b16d94660a33
change some io setting used in TWR-K22F120M

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jasper_lee 0:b16d94660a33 1 /* mbed Microcontroller Library
Jasper_lee 0:b16d94660a33 2 * Copyright (c) 2006-2013 ARM Limited
Jasper_lee 0:b16d94660a33 3 *
Jasper_lee 0:b16d94660a33 4 * Licensed under the Apache License, Version 2.0 (the "License");
Jasper_lee 0:b16d94660a33 5 * you may not use this file except in compliance with the License.
Jasper_lee 0:b16d94660a33 6 * You may obtain a copy of the License at
Jasper_lee 0:b16d94660a33 7 *
Jasper_lee 0:b16d94660a33 8 * http://www.apache.org/licenses/LICENSE-2.0
Jasper_lee 0:b16d94660a33 9 *
Jasper_lee 0:b16d94660a33 10 * Unless required by applicable law or agreed to in writing, software
Jasper_lee 0:b16d94660a33 11 * distributed under the License is distributed on an "AS IS" BASIS,
Jasper_lee 0:b16d94660a33 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Jasper_lee 0:b16d94660a33 13 * See the License for the specific language governing permissions and
Jasper_lee 0:b16d94660a33 14 * limitations under the License.
Jasper_lee 0:b16d94660a33 15 */
Jasper_lee 0:b16d94660a33 16 #ifndef MBED_PORTIN_H
Jasper_lee 0:b16d94660a33 17 #define MBED_PORTIN_H
Jasper_lee 0:b16d94660a33 18
Jasper_lee 0:b16d94660a33 19 #include "platform.h"
Jasper_lee 0:b16d94660a33 20
Jasper_lee 0:b16d94660a33 21 #if DEVICE_PORTIN
Jasper_lee 0:b16d94660a33 22
Jasper_lee 0:b16d94660a33 23 #include "port_api.h"
Jasper_lee 0:b16d94660a33 24
Jasper_lee 0:b16d94660a33 25 namespace mbed {
Jasper_lee 0:b16d94660a33 26
Jasper_lee 0:b16d94660a33 27 /** A multiple pin digital input
Jasper_lee 0:b16d94660a33 28 *
Jasper_lee 0:b16d94660a33 29 * Example:
Jasper_lee 0:b16d94660a33 30 * @code
Jasper_lee 0:b16d94660a33 31 * // Switch on an LED if any of mbed pins 21-26 is high
Jasper_lee 0:b16d94660a33 32 *
Jasper_lee 0:b16d94660a33 33 * #include "mbed.h"
Jasper_lee 0:b16d94660a33 34 *
Jasper_lee 0:b16d94660a33 35 * PortIn p(Port2, 0x0000003F); // p21-p26
Jasper_lee 0:b16d94660a33 36 * DigitalOut ind(LED4);
Jasper_lee 0:b16d94660a33 37 *
Jasper_lee 0:b16d94660a33 38 * int main() {
Jasper_lee 0:b16d94660a33 39 * while(1) {
Jasper_lee 0:b16d94660a33 40 * int pins = p.read();
Jasper_lee 0:b16d94660a33 41 * if(pins) {
Jasper_lee 0:b16d94660a33 42 * ind = 1;
Jasper_lee 0:b16d94660a33 43 * } else {
Jasper_lee 0:b16d94660a33 44 * ind = 0;
Jasper_lee 0:b16d94660a33 45 * }
Jasper_lee 0:b16d94660a33 46 * }
Jasper_lee 0:b16d94660a33 47 * }
Jasper_lee 0:b16d94660a33 48 * @endcode
Jasper_lee 0:b16d94660a33 49 */
Jasper_lee 0:b16d94660a33 50 class PortIn {
Jasper_lee 0:b16d94660a33 51 public:
Jasper_lee 0:b16d94660a33 52
Jasper_lee 0:b16d94660a33 53 /** Create an PortIn, connected to the specified port
Jasper_lee 0:b16d94660a33 54 *
Jasper_lee 0:b16d94660a33 55 * @param port Port to connect to (Port0-Port5)
Jasper_lee 0:b16d94660a33 56 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
Jasper_lee 0:b16d94660a33 57 */
Jasper_lee 0:b16d94660a33 58 PortIn(PortName port, int mask = 0xFFFFFFFF) {
Jasper_lee 0:b16d94660a33 59 port_init(&_port, port, mask, PIN_INPUT);
Jasper_lee 0:b16d94660a33 60 }
Jasper_lee 0:b16d94660a33 61
Jasper_lee 0:b16d94660a33 62 /** Read the value currently output on the port
Jasper_lee 0:b16d94660a33 63 *
Jasper_lee 0:b16d94660a33 64 * @returns
Jasper_lee 0:b16d94660a33 65 * An integer with each bit corresponding to associated port pin setting
Jasper_lee 0:b16d94660a33 66 */
Jasper_lee 0:b16d94660a33 67 int read() {
Jasper_lee 0:b16d94660a33 68 return port_read(&_port);
Jasper_lee 0:b16d94660a33 69 }
Jasper_lee 0:b16d94660a33 70
Jasper_lee 0:b16d94660a33 71 /** Set the input pin mode
Jasper_lee 0:b16d94660a33 72 *
Jasper_lee 0:b16d94660a33 73 * @param mode PullUp, PullDown, PullNone, OpenDrain
Jasper_lee 0:b16d94660a33 74 */
Jasper_lee 0:b16d94660a33 75 void mode(PinMode mode) {
Jasper_lee 0:b16d94660a33 76 port_mode(&_port, mode);
Jasper_lee 0:b16d94660a33 77 }
Jasper_lee 0:b16d94660a33 78
Jasper_lee 0:b16d94660a33 79 /** A shorthand for read()
Jasper_lee 0:b16d94660a33 80 */
Jasper_lee 0:b16d94660a33 81 operator int() {
Jasper_lee 0:b16d94660a33 82 return read();
Jasper_lee 0:b16d94660a33 83 }
Jasper_lee 0:b16d94660a33 84
Jasper_lee 0:b16d94660a33 85 private:
Jasper_lee 0:b16d94660a33 86 port_t _port;
Jasper_lee 0:b16d94660a33 87 };
Jasper_lee 0:b16d94660a33 88
Jasper_lee 0:b16d94660a33 89 } // namespace mbed
Jasper_lee 0:b16d94660a33 90
Jasper_lee 0:b16d94660a33 91 #endif
Jasper_lee 0:b16d94660a33 92
Jasper_lee 0:b16d94660a33 93 #endif