Jing Qiu / mbed

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Fork of mbed by gokmen ascioglu

DigitalInOut.h@1:27d81db81dd7, 2015-03-03 (annotated)

Committer:
Jing_Qiu
Date:
Tue Mar 03 00:55:57 2015 +0000
Revision:
1:27d81db81dd7
Parent:
0:a8fa94490a0a 
revise

Who changed what in which revision?

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gokmenascioglu 0:a8fa94490a0a 1 /* mbed Microcontroller Library - DigitalInOut
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_DIGITALINOUT_H
gokmenascioglu 0:a8fa94490a0a 6 #define MBED_DIGITALINOUT_H
gokmenascioglu 0:a8fa94490a0a 7
gokmenascioglu 0:a8fa94490a0a 8 #include "platform.h"
gokmenascioglu 0:a8fa94490a0a 9 #include "PinNames.h"
gokmenascioglu 0:a8fa94490a0a 10 #include "PeripheralNames.h"
gokmenascioglu 0:a8fa94490a0a 11 #include "Base.h"
gokmenascioglu 0:a8fa94490a0a 12
gokmenascioglu 0:a8fa94490a0a 13 namespace mbed {
gokmenascioglu 0:a8fa94490a0a 14
gokmenascioglu 0:a8fa94490a0a 15 /* Class: DigitalInOut
gokmenascioglu 0:a8fa94490a0a 16 * A digital input/output, used for setting or reading a bi-directional pin
gokmenascioglu 0:a8fa94490a0a 17 */
gokmenascioglu 0:a8fa94490a0a 18 class DigitalInOut : public Base {
gokmenascioglu 0:a8fa94490a0a 19
gokmenascioglu 0:a8fa94490a0a 20 public:
gokmenascioglu 0:a8fa94490a0a 21
gokmenascioglu 0:a8fa94490a0a 22 /* Constructor: DigitalInOut
gokmenascioglu 0:a8fa94490a0a 23 * Create a DigitalInOut connected to the specified pin
gokmenascioglu 0:a8fa94490a0a 24 *
gokmenascioglu 0:a8fa94490a0a 25 * Variables:
gokmenascioglu 0:a8fa94490a0a 26 * pin - DigitalInOut pin to connect to
gokmenascioglu 0:a8fa94490a0a 27 */
gokmenascioglu 0:a8fa94490a0a 28 DigitalInOut(PinName pin, const char* name = NULL);
gokmenascioglu 0:a8fa94490a0a 29
gokmenascioglu 0:a8fa94490a0a 30 /* Function: write
gokmenascioglu 0:a8fa94490a0a 31 * Set the output, specified as 0 or 1 (int)
gokmenascioglu 0:a8fa94490a0a 32 *
gokmenascioglu 0:a8fa94490a0a 33 * Variables:
gokmenascioglu 0:a8fa94490a0a 34 * value - An integer specifying the pin output value,
gokmenascioglu 0:a8fa94490a0a 35 * 0 for logical 0 and 1 (or any other non-zero value) for logical 1
gokmenascioglu 0:a8fa94490a0a 36 */
gokmenascioglu 0:a8fa94490a0a 37 void write(int value) {
gokmenascioglu 0:a8fa94490a0a 38 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
gokmenascioglu 0:a8fa94490a0a 39
gokmenascioglu 0:a8fa94490a0a 40 if(value) {
gokmenascioglu 0:a8fa94490a0a 41 _gpio->FIOSET = _mask;
gokmenascioglu 0:a8fa94490a0a 42 } else {
gokmenascioglu 0:a8fa94490a0a 43 _gpio->FIOCLR = _mask;
gokmenascioglu 0:a8fa94490a0a 44 }
gokmenascioglu 0:a8fa94490a0a 45
gokmenascioglu 0:a8fa94490a0a 46 #elif defined(TARGET_LPC11U24)
gokmenascioglu 0:a8fa94490a0a 47
gokmenascioglu 0:a8fa94490a0a 48 if(value) {
gokmenascioglu 0:a8fa94490a0a 49 LPC_GPIO->SET[_index] = _mask;
gokmenascioglu 0:a8fa94490a0a 50 } else {
gokmenascioglu 0:a8fa94490a0a 51 LPC_GPIO->CLR[_index] = _mask;
gokmenascioglu 0:a8fa94490a0a 52 }
gokmenascioglu 0:a8fa94490a0a 53 #endif
gokmenascioglu 0:a8fa94490a0a 54 }
gokmenascioglu 0:a8fa94490a0a 55
gokmenascioglu 0:a8fa94490a0a 56 /* Function: read
gokmenascioglu 0:a8fa94490a0a 57 * Return the output setting, represented as 0 or 1 (int)
gokmenascioglu 0:a8fa94490a0a 58 *
gokmenascioglu 0:a8fa94490a0a 59 * Variables:
gokmenascioglu 0:a8fa94490a0a 60 * returns - An integer representing the output setting of the pin if it is an output,
gokmenascioglu 0:a8fa94490a0a 61 * or read the input if set as an input
gokmenascioglu 0:a8fa94490a0a 62 */
gokmenascioglu 0:a8fa94490a0a 63 int read() {
gokmenascioglu 0:a8fa94490a0a 64 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
gokmenascioglu 0:a8fa94490a0a 65
gokmenascioglu 0:a8fa94490a0a 66 return ((_gpio->FIOPIN & _mask) ? 1 : 0);
gokmenascioglu 0:a8fa94490a0a 67 #elif defined(TARGET_LPC11U24)
gokmenascioglu 0:a8fa94490a0a 68 return ((LPC_GPIO->PIN[_index] & _mask) ? 1 : 0);
gokmenascioglu 0:a8fa94490a0a 69 #endif
gokmenascioglu 0:a8fa94490a0a 70 }
gokmenascioglu 0:a8fa94490a0a 71
gokmenascioglu 0:a8fa94490a0a 72
gokmenascioglu 0:a8fa94490a0a 73 /* Function: output
gokmenascioglu 0:a8fa94490a0a 74 * Set as an output
gokmenascioglu 0:a8fa94490a0a 75 */
gokmenascioglu 0:a8fa94490a0a 76 void output();
gokmenascioglu 0:a8fa94490a0a 77
gokmenascioglu 0:a8fa94490a0a 78 /* Function: input
gokmenascioglu 0:a8fa94490a0a 79 * Set as an input
gokmenascioglu 0:a8fa94490a0a 80 */
gokmenascioglu 0:a8fa94490a0a 81 void input();
gokmenascioglu 0:a8fa94490a0a 82
gokmenascioglu 0:a8fa94490a0a 83 /* Function: mode
gokmenascioglu 0:a8fa94490a0a 84 * Set the input pin mode
gokmenascioglu 0:a8fa94490a0a 85 *
gokmenascioglu 0:a8fa94490a0a 86 * Variables:
gokmenascioglu 0:a8fa94490a0a 87 * mode - PullUp, PullDown, PullNone, OpenDrain
gokmenascioglu 0:a8fa94490a0a 88 */
gokmenascioglu 0:a8fa94490a0a 89 void mode(PinMode pull);
gokmenascioglu 0:a8fa94490a0a 90
gokmenascioglu 0:a8fa94490a0a 91 #ifdef MBED_OPERATORS
gokmenascioglu 0:a8fa94490a0a 92 /* Function: operator=
gokmenascioglu 0:a8fa94490a0a 93 * A shorthand for <write>
gokmenascioglu 0:a8fa94490a0a 94 */
gokmenascioglu 0:a8fa94490a0a 95 DigitalInOut& operator= (int value) {
gokmenascioglu 0:a8fa94490a0a 96 write(value);
gokmenascioglu 0:a8fa94490a0a 97 return *this;
gokmenascioglu 0:a8fa94490a0a 98 }
gokmenascioglu 0:a8fa94490a0a 99
gokmenascioglu 0:a8fa94490a0a 100 DigitalInOut& operator= (DigitalInOut& rhs) {
gokmenascioglu 0:a8fa94490a0a 101 write(rhs.read());
gokmenascioglu 0:a8fa94490a0a 102 return *this;
gokmenascioglu 0:a8fa94490a0a 103 }
gokmenascioglu 0:a8fa94490a0a 104
gokmenascioglu 0:a8fa94490a0a 105 /* Function: operator int()
gokmenascioglu 0:a8fa94490a0a 106 * A shorthand for <read>
gokmenascioglu 0:a8fa94490a0a 107 */
gokmenascioglu 0:a8fa94490a0a 108 operator int() {
gokmenascioglu 0:a8fa94490a0a 109 return read();
gokmenascioglu 0:a8fa94490a0a 110 }
gokmenascioglu 0:a8fa94490a0a 111 #endif
gokmenascioglu 0:a8fa94490a0a 112
gokmenascioglu 0:a8fa94490a0a 113 #ifdef MBED_RPC
gokmenascioglu 0:a8fa94490a0a 114 virtual const struct rpc_method *get_rpc_methods();
gokmenascioglu 0:a8fa94490a0a 115 static struct rpc_class *get_rpc_class();
gokmenascioglu 0:a8fa94490a0a 116 #endif
gokmenascioglu 0:a8fa94490a0a 117
gokmenascioglu 0:a8fa94490a0a 118 protected:
gokmenascioglu 0:a8fa94490a0a 119
gokmenascioglu 0:a8fa94490a0a 120 PinName _pin;
gokmenascioglu 0:a8fa94490a0a 121
gokmenascioglu 0:a8fa94490a0a 122 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
gokmenascioglu 0:a8fa94490a0a 123 LPC_GPIO_TypeDef *_gpio;
gokmenascioglu 0:a8fa94490a0a 124 #elif defined(TARGET_LPC11U24)
gokmenascioglu 0:a8fa94490a0a 125 int _index;
gokmenascioglu 0:a8fa94490a0a 126 #endif
gokmenascioglu 0:a8fa94490a0a 127
gokmenascioglu 0:a8fa94490a0a 128 uint32_t _mask;
gokmenascioglu 0:a8fa94490a0a 129
gokmenascioglu 0:a8fa94490a0a 130 };
gokmenascioglu 0:a8fa94490a0a 131
gokmenascioglu 0:a8fa94490a0a 132 } // namespace mbed
gokmenascioglu 0:a8fa94490a0a 133
gokmenascioglu 0:a8fa94490a0a 134 #endif