Commit | Line | Data |
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4cff3ded | 1 | /* mbed Microcontroller Library - InterruptIn |
8fcce42e | 2 | * Copyright (c) 2006-2011 ARM Limited. All rights reserved. |
4cff3ded AW |
3 | */ |
4 | ||
5 | #ifndef MBED_INTERRUPTIN_H | |
6 | #define MBED_INTERRUPTIN_H | |
7 | ||
8fcce42e AG |
8 | #include "device.h" |
9 | ||
10 | #if DEVICE_INTERRUPTIN | |
11 | ||
4cff3ded AW |
12 | #include "platform.h" |
13 | #include "PinNames.h" | |
14 | #include "PeripheralNames.h" | |
15 | #include "Base.h" | |
16 | #include "FunctionPointer.h" | |
17 | ||
8fcce42e AG |
18 | #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) |
19 | #define CHANNEL_NUM 48 | |
20 | #elif defined(TARGET_LPC11U24) | |
21 | #define CHANNEL_NUM 8 | |
22 | #endif | |
23 | ||
4cff3ded AW |
24 | namespace mbed { |
25 | ||
26 | /* Class: InterruptIn | |
27 | * A digital interrupt input, used to call a function on a rising or falling edge | |
28 | * | |
29 | * Example: | |
30 | * > // Flash an LED while waiting for events | |
31 | * > | |
32 | * > #include "mbed.h" | |
33 | * > | |
34 | * > InterruptIn event(p16); | |
35 | * > DigitalOut led(LED1); | |
36 | * > | |
37 | * > void trigger() { | |
38 | * > printf("triggered!\n"); | |
39 | * > } | |
40 | * > | |
41 | * > int main() { | |
42 | * > event.rise(&trigger); | |
43 | * > while(1) { | |
44 | * > led = !led; | |
45 | * > wait(0.25); | |
46 | * > } | |
47 | * > } | |
48 | */ | |
49 | class InterruptIn : public Base { | |
50 | ||
51 | public: | |
52 | ||
53 | /* Constructor: InterruptIn | |
54 | * Create an InterruptIn connected to the specified pin | |
55 | * | |
56 | * Variables: | |
57 | * pin - InterruptIn pin to connect to | |
58 | * name - (optional) A string to identify the object | |
59 | */ | |
60 | InterruptIn(PinName pin, const char *name = NULL); | |
8fcce42e AG |
61 | #if defined(TARGET_LPC11U24) |
62 | virtual ~InterruptIn(); | |
63 | #endif | |
4cff3ded AW |
64 | |
65 | int read(); | |
66 | #ifdef MBED_OPERATORS | |
67 | operator int(); | |
68 | ||
69 | #endif | |
70 | ||
71 | /* Function: rise | |
72 | * Attach a function to call when a rising edge occurs on the input | |
73 | * | |
74 | * Variables: | |
75 | * fptr - A pointer to a void function, or 0 to set as none | |
76 | */ | |
77 | void rise(void (*fptr)(void)); | |
78 | ||
79 | /* Function: rise | |
80 | * Attach a member function to call when a rising edge occurs on the input | |
81 | * | |
82 | * Variables: | |
83 | * tptr - pointer to the object to call the member function on | |
84 | * mptr - pointer to the member function to be called | |
85 | */ | |
86 | template<typename T> | |
87 | void rise(T* tptr, void (T::*mptr)(void)) { | |
88 | _rise.attach(tptr, mptr); | |
89 | setup_interrupt(1, 1); | |
90 | } | |
91 | ||
92 | /* Function: fall | |
93 | * Attach a function to call when a falling edge occurs on the input | |
94 | * | |
95 | * Variables: | |
96 | * fptr - A pointer to a void function, or 0 to set as none | |
97 | */ | |
98 | void fall(void (*fptr)(void)); | |
99 | ||
100 | /* Function: fall | |
101 | * Attach a member function to call when a falling edge occurs on the input | |
102 | * | |
103 | * Variables: | |
104 | * tptr - pointer to the object to call the member function on | |
105 | * mptr - pointer to the member function to be called | |
106 | */ | |
107 | template<typename T> | |
108 | void fall(T* tptr, void (T::*mptr)(void)) { | |
109 | _fall.attach(tptr, mptr); | |
110 | setup_interrupt(0, 1); | |
111 | } | |
112 | ||
113 | /* Function: mode | |
114 | * Set the input pin mode | |
115 | * | |
116 | * Variables: | |
117 | * mode - PullUp, PullDown, PullNone | |
118 | */ | |
119 | void mode(PinMode pull); | |
120 | ||
8fcce42e AG |
121 | static InterruptIn *_irq_objects[CHANNEL_NUM]; |
122 | ||
123 | #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) | |
124 | static void _irq(); | |
125 | #elif defined(TARGET_LPC11U24) | |
126 | static void handle_interrupt_in(unsigned int channel); | |
127 | static void _irq0(); static void _irq1(); | |
128 | static void _irq2(); static void _irq3(); | |
129 | static void _irq4(); static void _irq5(); | |
130 | static void _irq6(); static void _irq7(); | |
131 | #endif | |
4cff3ded AW |
132 | |
133 | protected: | |
4cff3ded | 134 | PinName _pin; |
8fcce42e AG |
135 | #if defined(TARGET_LPC11U24) |
136 | Channel _channel; | |
137 | #endif | |
4cff3ded AW |
138 | FunctionPointer _rise; |
139 | FunctionPointer _fall; | |
140 | ||
141 | void setup_interrupt(int rising, int enable); | |
142 | ||
143 | }; | |
144 | ||
145 | } // namespace mbed | |
146 | ||
147 | #endif | |
8fcce42e AG |
148 | |
149 | #endif |