Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

api/PortOut.h@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Parent:
9:0ce32e54c9a7
Child:
13:0645d8841f51
Unify mbed library sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #ifndef MBED_PORTOUT_H
emilmont 10:3bc89ef62ce7 17 #define MBED_PORTOUT_H
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 #include "platform.h"
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 #if DEVICE_PORTOUT
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 #include "port_api.h"
emilmont 10:3bc89ef62ce7 24
emilmont 10:3bc89ef62ce7 25 namespace mbed {
emilmont 10:3bc89ef62ce7 26 /** A multiple pin digital out
emilmont 10:3bc89ef62ce7 27 *
emilmont 10:3bc89ef62ce7 28 * Example:
emilmont 10:3bc89ef62ce7 29 * @code
emilmont 10:3bc89ef62ce7 30 * // Toggle all four LEDs
emilmont 10:3bc89ef62ce7 31 *
emilmont 10:3bc89ef62ce7 32 * #include "mbed.h"
emilmont 10:3bc89ef62ce7 33 *
emilmont 10:3bc89ef62ce7 34 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
emilmont 10:3bc89ef62ce7 35 * #define LED_MASK 0x00B40000
emilmont 10:3bc89ef62ce7 36 *
emilmont 10:3bc89ef62ce7 37 * PortOut ledport(Port1, LED_MASK);
emilmont 10:3bc89ef62ce7 38 *
emilmont 10:3bc89ef62ce7 39 * int main() {
emilmont 10:3bc89ef62ce7 40 * while(1) {
emilmont 10:3bc89ef62ce7 41 * ledport = LED_MASK;
emilmont 10:3bc89ef62ce7 42 * wait(1);
emilmont 10:3bc89ef62ce7 43 * ledport = 0;
emilmont 10:3bc89ef62ce7 44 * wait(1);
emilmont 10:3bc89ef62ce7 45 * }
emilmont 10:3bc89ef62ce7 46 * }
emilmont 10:3bc89ef62ce7 47 * @endcode
emilmont 10:3bc89ef62ce7 48 */
emilmont 10:3bc89ef62ce7 49 class PortOut {
emilmont 10:3bc89ef62ce7 50 public:
emilmont 10:3bc89ef62ce7 51
emilmont 10:3bc89ef62ce7 52 /** Create an PortOut, connected to the specified port
emilmont 10:3bc89ef62ce7 53 *
emilmont 10:3bc89ef62ce7 54 * @param port Port to connect to (Port0-Port5)
emilmont 10:3bc89ef62ce7 55 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
emilmont 10:3bc89ef62ce7 56 */
emilmont 10:3bc89ef62ce7 57 PortOut(PortName port, int mask = 0xFFFFFFFF) {
emilmont 10:3bc89ef62ce7 58 port_init(&_port, port, mask, PIN_OUTPUT);
emilmont 10:3bc89ef62ce7 59 }
emilmont 10:3bc89ef62ce7 60
emilmont 10:3bc89ef62ce7 61 /** Write the value to the output port
emilmont 10:3bc89ef62ce7 62 *
emilmont 10:3bc89ef62ce7 63 * @param value An integer specifying a bit to write for every corresponding PortOut pin
emilmont 10:3bc89ef62ce7 64 */
emilmont 10:3bc89ef62ce7 65 void write(int value) {
emilmont 10:3bc89ef62ce7 66 port_write(&_port, value);
emilmont 10:3bc89ef62ce7 67 }
emilmont 10:3bc89ef62ce7 68
emilmont 10:3bc89ef62ce7 69 /** Read the value currently output on the port
emilmont 10:3bc89ef62ce7 70 *
emilmont 10:3bc89ef62ce7 71 * @returns
emilmont 10:3bc89ef62ce7 72 * An integer with each bit corresponding to associated PortOut pin setting
emilmont 10:3bc89ef62ce7 73 */
emilmont 10:3bc89ef62ce7 74 int read() {
emilmont 10:3bc89ef62ce7 75 return port_read(&_port);
emilmont 10:3bc89ef62ce7 76 }
emilmont 10:3bc89ef62ce7 77
emilmont 10:3bc89ef62ce7 78 /** A shorthand for write()
emilmont 10:3bc89ef62ce7 79 */
emilmont 10:3bc89ef62ce7 80 PortOut& operator= (int value) {
emilmont 10:3bc89ef62ce7 81 write(value);
emilmont 10:3bc89ef62ce7 82 return *this;
emilmont 10:3bc89ef62ce7 83 }
emilmont 10:3bc89ef62ce7 84
emilmont 10:3bc89ef62ce7 85 PortOut& operator= (PortOut& rhs) {
emilmont 10:3bc89ef62ce7 86 write(rhs.read());
emilmont 10:3bc89ef62ce7 87 return *this;
emilmont 10:3bc89ef62ce7 88 }
emilmont 10:3bc89ef62ce7 89
emilmont 10:3bc89ef62ce7 90 /** A shorthand for read()
emilmont 10:3bc89ef62ce7 91 */
emilmont 10:3bc89ef62ce7 92 operator int() {
emilmont 10:3bc89ef62ce7 93 return read();
emilmont 10:3bc89ef62ce7 94 }
emilmont 10:3bc89ef62ce7 95
emilmont 10:3bc89ef62ce7 96 private:
emilmont 10:3bc89ef62ce7 97 port_t _port;
emilmont 10:3bc89ef62ce7 98 };
emilmont 10:3bc89ef62ce7 99
emilmont 10:3bc89ef62ce7 100 } // namespace mbed
emilmont 10:3bc89ef62ce7 101
emilmont 10:3bc89ef62ce7 102 #endif
emilmont 10:3bc89ef62ce7 103
emilmont 10:3bc89ef62ce7 104 #endif