Jing Qiu / mbed

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Fork of mbed by gokmen ascioglu

PortIn.h@0:a8fa94490a0a, 2012-09-22 (annotated)

Committer:
gokmenascioglu
Date:
Sat Sep 22 10:32:07 2012 +0000
Revision:
0:a8fa94490a0a
alican library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gokmenascioglu 0:a8fa94490a0a 1 /* mbed Microcontroller Library - PortInOut
gokmenascioglu 0:a8fa94490a0a 2 * Copyright (c) 2006-2011 ARM Limited. All rights reserved.
gokmenascioglu 0:a8fa94490a0a 3 */
gokmenascioglu 0:a8fa94490a0a 4
gokmenascioglu 0:a8fa94490a0a 5 #ifndef MBED_PORTIN_H
gokmenascioglu 0:a8fa94490a0a 6 #define MBED_PORTIN_H
gokmenascioglu 0:a8fa94490a0a 7
gokmenascioglu 0:a8fa94490a0a 8 #include "device.h"
gokmenascioglu 0:a8fa94490a0a 9
gokmenascioglu 0:a8fa94490a0a 10 #if DEVICE_PORTIN
gokmenascioglu 0:a8fa94490a0a 11
gokmenascioglu 0:a8fa94490a0a 12 #include "PortNames.h"
gokmenascioglu 0:a8fa94490a0a 13 #include "PinNames.h"
gokmenascioglu 0:a8fa94490a0a 14
gokmenascioglu 0:a8fa94490a0a 15 namespace mbed {
gokmenascioglu 0:a8fa94490a0a 16
gokmenascioglu 0:a8fa94490a0a 17 /* Class: PortIn
gokmenascioglu 0:a8fa94490a0a 18 * A multiple pin digital input
gokmenascioglu 0:a8fa94490a0a 19 *
gokmenascioglu 0:a8fa94490a0a 20 * Example:
gokmenascioglu 0:a8fa94490a0a 21 * > // Switch on an LED if any of mbed pins 21-26 is high
gokmenascioglu 0:a8fa94490a0a 22 * >
gokmenascioglu 0:a8fa94490a0a 23 * > #include "mbed.h"
gokmenascioglu 0:a8fa94490a0a 24 * >
gokmenascioglu 0:a8fa94490a0a 25 * > PortIn p(Port2, 0x0000003F); // p21-p26
gokmenascioglu 0:a8fa94490a0a 26 * > DigitalOut ind(LED4);
gokmenascioglu 0:a8fa94490a0a 27 * >
gokmenascioglu 0:a8fa94490a0a 28 * > int main() {
gokmenascioglu 0:a8fa94490a0a 29 * > while(1) {
gokmenascioglu 0:a8fa94490a0a 30 * > int pins = p.read();
gokmenascioglu 0:a8fa94490a0a 31 * > if(pins) {
gokmenascioglu 0:a8fa94490a0a 32 * > ind = 1;
gokmenascioglu 0:a8fa94490a0a 33 * > } else {
gokmenascioglu 0:a8fa94490a0a 34 * > ind = 0;
gokmenascioglu 0:a8fa94490a0a 35 * > }
gokmenascioglu 0:a8fa94490a0a 36 * > }
gokmenascioglu 0:a8fa94490a0a 37 * > }
gokmenascioglu 0:a8fa94490a0a 38 */
gokmenascioglu 0:a8fa94490a0a 39 class PortIn {
gokmenascioglu 0:a8fa94490a0a 40 public:
gokmenascioglu 0:a8fa94490a0a 41
gokmenascioglu 0:a8fa94490a0a 42 /* Constructor: PortIn
gokmenascioglu 0:a8fa94490a0a 43 * Create an PortIn, connected to the specified port
gokmenascioglu 0:a8fa94490a0a 44 *
gokmenascioglu 0:a8fa94490a0a 45 * Variables:
gokmenascioglu 0:a8fa94490a0a 46 * port - Port to connect to (Port0-Port5)
gokmenascioglu 0:a8fa94490a0a 47 * mask - A bitmask to identify which bits in the port should be included (0 - ignore)
gokmenascioglu 0:a8fa94490a0a 48 */
gokmenascioglu 0:a8fa94490a0a 49 PortIn(PortName port, int mask = 0xFFFFFFFF);
gokmenascioglu 0:a8fa94490a0a 50
gokmenascioglu 0:a8fa94490a0a 51 /* Function: read
gokmenascioglu 0:a8fa94490a0a 52 * Read the value currently output on the port
gokmenascioglu 0:a8fa94490a0a 53 *
gokmenascioglu 0:a8fa94490a0a 54 * Variables:
gokmenascioglu 0:a8fa94490a0a 55 * returns - An integer with each bit corresponding to associated port pin setting
gokmenascioglu 0:a8fa94490a0a 56 */
gokmenascioglu 0:a8fa94490a0a 57 int read();
gokmenascioglu 0:a8fa94490a0a 58
gokmenascioglu 0:a8fa94490a0a 59 /* Function: mode
gokmenascioglu 0:a8fa94490a0a 60 * Set the input pin mode
gokmenascioglu 0:a8fa94490a0a 61 *
gokmenascioglu 0:a8fa94490a0a 62 * Variables:
gokmenascioglu 0:a8fa94490a0a 63 * mode - PullUp, PullDown, PullNone, OpenDrain
gokmenascioglu 0:a8fa94490a0a 64 */
gokmenascioglu 0:a8fa94490a0a 65 void mode(PinMode mode);
gokmenascioglu 0:a8fa94490a0a 66
gokmenascioglu 0:a8fa94490a0a 67 /* Function: operator int()
gokmenascioglu 0:a8fa94490a0a 68 * A shorthand for <read>
gokmenascioglu 0:a8fa94490a0a 69 */
gokmenascioglu 0:a8fa94490a0a 70 operator int() {
gokmenascioglu 0:a8fa94490a0a 71 return read();
gokmenascioglu 0:a8fa94490a0a 72 }
gokmenascioglu 0:a8fa94490a0a 73
gokmenascioglu 0:a8fa94490a0a 74 private:
gokmenascioglu 0:a8fa94490a0a 75 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
gokmenascioglu 0:a8fa94490a0a 76 LPC_GPIO_TypeDef *_gpio;
gokmenascioglu 0:a8fa94490a0a 77 #endif
gokmenascioglu 0:a8fa94490a0a 78 PortName _port;
gokmenascioglu 0:a8fa94490a0a 79 uint32_t _mask;
gokmenascioglu 0:a8fa94490a0a 80 };
gokmenascioglu 0:a8fa94490a0a 81
gokmenascioglu 0:a8fa94490a0a 82 } // namespace mbed
gokmenascioglu 0:a8fa94490a0a 83
gokmenascioglu 0:a8fa94490a0a 84 #endif
gokmenascioglu 0:a8fa94490a0a 85
gokmenascioglu 0:a8fa94490a0a 86 #endif