eunkyoung kim / mbed-src

mbed library sources modify the rtc/i2c

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api/PortOut.h@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
10:3bc89ef62ce7 
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_PORTOUT_H
bogdanm 13:0645d8841f51 17 #define MBED_PORTOUT_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 #if DEVICE_PORTOUT
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 #include "port_api.h"
bogdanm 13:0645d8841f51 24
bogdanm 13:0645d8841f51 25 namespace mbed {
bogdanm 13:0645d8841f51 26 /** A multiple pin digital out
bogdanm 13:0645d8841f51 27 *
bogdanm 13:0645d8841f51 28 * Example:
bogdanm 13:0645d8841f51 29 * @code
bogdanm 13:0645d8841f51 30 * // Toggle all four LEDs
bogdanm 13:0645d8841f51 31 *
bogdanm 13:0645d8841f51 32 * #include "mbed.h"
bogdanm 13:0645d8841f51 33 *
bogdanm 13:0645d8841f51 34 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
bogdanm 13:0645d8841f51 35 * #define LED_MASK 0x00B40000
bogdanm 13:0645d8841f51 36 *
bogdanm 13:0645d8841f51 37 * PortOut ledport(Port1, LED_MASK);
bogdanm 13:0645d8841f51 38 *
bogdanm 13:0645d8841f51 39 * int main() {
bogdanm 13:0645d8841f51 40 * while(1) {
bogdanm 13:0645d8841f51 41 * ledport = LED_MASK;
bogdanm 13:0645d8841f51 42 * wait(1);
bogdanm 13:0645d8841f51 43 * ledport = 0;
bogdanm 13:0645d8841f51 44 * wait(1);
bogdanm 13:0645d8841f51 45 * }
bogdanm 13:0645d8841f51 46 * }
bogdanm 13:0645d8841f51 47 * @endcode
bogdanm 13:0645d8841f51 48 */
bogdanm 13:0645d8841f51 49 class PortOut {
bogdanm 13:0645d8841f51 50 public:
bogdanm 13:0645d8841f51 51
bogdanm 13:0645d8841f51 52 /** Create an PortOut, connected to the specified port
bogdanm 13:0645d8841f51 53 *
bogdanm 13:0645d8841f51 54 * @param port Port to connect to (Port0-Port5)
bogdanm 13:0645d8841f51 55 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
bogdanm 13:0645d8841f51 56 */
bogdanm 13:0645d8841f51 57 PortOut(PortName port, int mask = 0xFFFFFFFF) {
bogdanm 13:0645d8841f51 58 port_init(&_port, port, mask, PIN_OUTPUT);
bogdanm 13:0645d8841f51 59 }
bogdanm 13:0645d8841f51 60
bogdanm 13:0645d8841f51 61 /** Write the value to the output port
bogdanm 13:0645d8841f51 62 *
bogdanm 13:0645d8841f51 63 * @param value An integer specifying a bit to write for every corresponding PortOut pin
bogdanm 13:0645d8841f51 64 */
bogdanm 13:0645d8841f51 65 void write(int value) {
bogdanm 13:0645d8841f51 66 port_write(&_port, value);
bogdanm 13:0645d8841f51 67 }
bogdanm 13:0645d8841f51 68
bogdanm 13:0645d8841f51 69 /** Read the value currently output on the port
bogdanm 13:0645d8841f51 70 *
bogdanm 13:0645d8841f51 71 * @returns
bogdanm 13:0645d8841f51 72 * An integer with each bit corresponding to associated PortOut pin setting
bogdanm 13:0645d8841f51 73 */
bogdanm 13:0645d8841f51 74 int read() {
bogdanm 13:0645d8841f51 75 return port_read(&_port);
bogdanm 13:0645d8841f51 76 }
bogdanm 13:0645d8841f51 77
bogdanm 13:0645d8841f51 78 /** A shorthand for write()
bogdanm 13:0645d8841f51 79 */
bogdanm 13:0645d8841f51 80 PortOut& operator= (int value) {
bogdanm 13:0645d8841f51 81 write(value);
bogdanm 13:0645d8841f51 82 return *this;
bogdanm 13:0645d8841f51 83 }
bogdanm 13:0645d8841f51 84
bogdanm 13:0645d8841f51 85 PortOut& operator= (PortOut& rhs) {
bogdanm 13:0645d8841f51 86 write(rhs.read());
bogdanm 13:0645d8841f51 87 return *this;
bogdanm 13:0645d8841f51 88 }
bogdanm 13:0645d8841f51 89
bogdanm 13:0645d8841f51 90 /** A shorthand for read()
bogdanm 13:0645d8841f51 91 */
bogdanm 13:0645d8841f51 92 operator int() {
bogdanm 13:0645d8841f51 93 return read();
bogdanm 13:0645d8841f51 94 }
bogdanm 13:0645d8841f51 95
bogdanm 13:0645d8841f51 96 private:
bogdanm 13:0645d8841f51 97 port_t _port;
bogdanm 13:0645d8841f51 98 };
bogdanm 13:0645d8841f51 99
bogdanm 13:0645d8841f51 100 } // namespace mbed
bogdanm 13:0645d8841f51 101
bogdanm 13:0645d8841f51 102 #endif
bogdanm 13:0645d8841f51 103
bogdanm 13:0645d8841f51 104 #endif