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mbed/DigitalOut.h@17:d1594579eec6, 2017-05-19 (annotated)

Committer:
ClementBreteau
Date:
Fri May 19 17:14:07 2017 +0000
Revision:
17:d1594579eec6
Parent:
0:ad97421fb1fb 
strat du robot, 19-05-2017, 19h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
antbig 0:ad97421fb1fb 1 /* mbed Microcontroller Library - DigitalOut
antbig 0:ad97421fb1fb 2 * Copyright (c) 2006-2011 ARM Limited. All rights reserved.
antbig 0:ad97421fb1fb 3 */
antbig 0:ad97421fb1fb 4
antbig 0:ad97421fb1fb 5 #ifndef MBED_DIGITALOUT_H
antbig 0:ad97421fb1fb 6 #define MBED_DIGITALOUT_H
antbig 0:ad97421fb1fb 7
antbig 0:ad97421fb1fb 8 #include "platform.h"
antbig 0:ad97421fb1fb 9 #include "PinNames.h"
antbig 0:ad97421fb1fb 10 #include "PeripheralNames.h"
antbig 0:ad97421fb1fb 11 #include "Base.h"
antbig 0:ad97421fb1fb 12
antbig 0:ad97421fb1fb 13 namespace mbed {
antbig 0:ad97421fb1fb 14
antbig 0:ad97421fb1fb 15 /* Class: DigitalOut
antbig 0:ad97421fb1fb 16 * A digital output, used for setting the state of a pin
antbig 0:ad97421fb1fb 17 *
antbig 0:ad97421fb1fb 18 * Example:
antbig 0:ad97421fb1fb 19 * > // Toggle a LED
antbig 0:ad97421fb1fb 20 * > #include "mbed.h"
antbig 0:ad97421fb1fb 21 * >
antbig 0:ad97421fb1fb 22 * > DigitalOut led(LED1);
antbig 0:ad97421fb1fb 23 * >
antbig 0:ad97421fb1fb 24 * > int main() {
antbig 0:ad97421fb1fb 25 * > while(1) {
antbig 0:ad97421fb1fb 26 * > led = !led;
antbig 0:ad97421fb1fb 27 * > wait(0.2);
antbig 0:ad97421fb1fb 28 * > }
antbig 0:ad97421fb1fb 29 * > }
antbig 0:ad97421fb1fb 30 */
antbig 0:ad97421fb1fb 31 class DigitalOut : public Base {
antbig 0:ad97421fb1fb 32
antbig 0:ad97421fb1fb 33 public:
antbig 0:ad97421fb1fb 34
antbig 0:ad97421fb1fb 35 /* Constructor: DigitalOut
antbig 0:ad97421fb1fb 36 * Create a DigitalOut connected to the specified pin
antbig 0:ad97421fb1fb 37 *
antbig 0:ad97421fb1fb 38 * Variables:
antbig 0:ad97421fb1fb 39 * pin - DigitalOut pin to connect to
antbig 0:ad97421fb1fb 40 */
antbig 0:ad97421fb1fb 41 DigitalOut(PinName pin, const char* name = NULL);
antbig 0:ad97421fb1fb 42
antbig 0:ad97421fb1fb 43 /* Function: write
antbig 0:ad97421fb1fb 44 * Set the output, specified as 0 or 1 (int)
antbig 0:ad97421fb1fb 45 *
antbig 0:ad97421fb1fb 46 * Variables:
antbig 0:ad97421fb1fb 47 * value - An integer specifying the pin output value,
antbig 0:ad97421fb1fb 48 * 0 for logical 0 and 1 (or any other non-zero value) for logical 1
antbig 0:ad97421fb1fb 49 */
antbig 0:ad97421fb1fb 50 void write(int value) {
antbig 0:ad97421fb1fb 51
antbig 0:ad97421fb1fb 52 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
antbig 0:ad97421fb1fb 53
antbig 0:ad97421fb1fb 54 if(value) {
antbig 0:ad97421fb1fb 55 _gpio->FIOSET = _mask;
antbig 0:ad97421fb1fb 56 } else {
antbig 0:ad97421fb1fb 57 _gpio->FIOCLR = _mask;
antbig 0:ad97421fb1fb 58 }
antbig 0:ad97421fb1fb 59
antbig 0:ad97421fb1fb 60 #elif defined(TARGET_LPC11U24)
antbig 0:ad97421fb1fb 61
antbig 0:ad97421fb1fb 62 if(value) {
antbig 0:ad97421fb1fb 63 LPC_GPIO->SET[_index] = _mask;
antbig 0:ad97421fb1fb 64 } else {
antbig 0:ad97421fb1fb 65 LPC_GPIO->CLR[_index] = _mask;
antbig 0:ad97421fb1fb 66 }
antbig 0:ad97421fb1fb 67 #endif
antbig 0:ad97421fb1fb 68
antbig 0:ad97421fb1fb 69 }
antbig 0:ad97421fb1fb 70
antbig 0:ad97421fb1fb 71 /* Function: read
antbig 0:ad97421fb1fb 72 * Return the output setting, represented as 0 or 1 (int)
antbig 0:ad97421fb1fb 73 *
antbig 0:ad97421fb1fb 74 * Variables:
antbig 0:ad97421fb1fb 75 * returns - An integer representing the output setting of the pin,
antbig 0:ad97421fb1fb 76 * 0 for logical 0 and 1 for logical 1
antbig 0:ad97421fb1fb 77 */
antbig 0:ad97421fb1fb 78 int read() {
antbig 0:ad97421fb1fb 79 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
antbig 0:ad97421fb1fb 80 return ((_gpio->FIOPIN & _mask) ? 1 : 0);
antbig 0:ad97421fb1fb 81 #elif defined(TARGET_LPC11U24)
antbig 0:ad97421fb1fb 82 return ((LPC_GPIO->PIN[_index] & _mask) ? 1 : 0);
antbig 0:ad97421fb1fb 83 #endif
antbig 0:ad97421fb1fb 84
antbig 0:ad97421fb1fb 85 }
antbig 0:ad97421fb1fb 86
antbig 0:ad97421fb1fb 87
antbig 0:ad97421fb1fb 88 #ifdef MBED_OPERATORS
antbig 0:ad97421fb1fb 89 /* Function: operator=
antbig 0:ad97421fb1fb 90 * A shorthand for <write>
antbig 0:ad97421fb1fb 91 */
antbig 0:ad97421fb1fb 92 DigitalOut& operator= (int value) {
antbig 0:ad97421fb1fb 93 write(value);
antbig 0:ad97421fb1fb 94 return *this;
antbig 0:ad97421fb1fb 95 }
antbig 0:ad97421fb1fb 96
antbig 0:ad97421fb1fb 97 DigitalOut& operator= (DigitalOut& rhs) {
antbig 0:ad97421fb1fb 98 write(rhs.read());
antbig 0:ad97421fb1fb 99 return *this;
antbig 0:ad97421fb1fb 100 }
antbig 0:ad97421fb1fb 101
antbig 0:ad97421fb1fb 102
antbig 0:ad97421fb1fb 103 /* Function: operator int()
antbig 0:ad97421fb1fb 104 * A shorthand for <read>
antbig 0:ad97421fb1fb 105 */
antbig 0:ad97421fb1fb 106 operator int() {
antbig 0:ad97421fb1fb 107 return read();
antbig 0:ad97421fb1fb 108 }
antbig 0:ad97421fb1fb 109
antbig 0:ad97421fb1fb 110 #endif
antbig 0:ad97421fb1fb 111
antbig 0:ad97421fb1fb 112 #ifdef MBED_RPC
antbig 0:ad97421fb1fb 113 virtual const struct rpc_method *get_rpc_methods();
antbig 0:ad97421fb1fb 114 static struct rpc_class *get_rpc_class();
antbig 0:ad97421fb1fb 115 #endif
antbig 0:ad97421fb1fb 116
antbig 0:ad97421fb1fb 117 protected:
antbig 0:ad97421fb1fb 118
antbig 0:ad97421fb1fb 119 PinName _pin;
antbig 0:ad97421fb1fb 120
antbig 0:ad97421fb1fb 121 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
antbig 0:ad97421fb1fb 122 LPC_GPIO_TypeDef *_gpio;
antbig 0:ad97421fb1fb 123 #elif defined(TARGET_LPC11U24)
antbig 0:ad97421fb1fb 124 int _index;
antbig 0:ad97421fb1fb 125 #endif
antbig 0:ad97421fb1fb 126
antbig 0:ad97421fb1fb 127 uint32_t _mask;
antbig 0:ad97421fb1fb 128
antbig 0:ad97421fb1fb 129
antbig 0:ad97421fb1fb 130 };
antbig 0:ad97421fb1fb 131
antbig 0:ad97421fb1fb 132 } // namespace mbed
antbig 0:ad97421fb1fb 133
antbig 0:ad97421fb1fb 134 #endif