Mihail Stoyanov / mbed

Fork of the official mbed C/C++ SDK provides the software platform and libraries to build your applications. The fork has the documentation converted to Doxygen format

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Fork of mbed by mbed official

DigitalIn.h@5:62573be585e9, 2009-01-22 (annotated)

Committer:
simon.ford@mbed.co.uk
Date:
Thu Jan 22 18:32:40 2009 +0000
Revision:
5:62573be585e9
Parent:
4:5d1359a283bc
Child:
11:1c1ebd0324fa
* Added initial RPC release

 * Added RTC and helper functions

 * Added read_u16()/write_u16() to AnalogIn/Out

 * Ticker/Timeout timing fixed!

 * mbedinfo() helper added

 * error() and printf() added to replace DEBUG() and ERROR()

 * DigitalIn supports methods on rise/fall

 * SPI and Serial support NC

 * LED1-4 also map to 1-4

 * Timer object reset fixed

 * SPI uses single mode

 * SPI3 added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon.ford@mbed.co.uk 0:82220227f4fa 1 /* mbed Microcontroller Library - DigitalIn
simon.ford@mbed.co.uk 5:62573be585e9 2 * Copyright (c) 2006-2009 ARM Limited. All rights reserved.
simon.ford@mbed.co.uk 5:62573be585e9 3 * sford
simon.ford@mbed.co.uk 5:62573be585e9 4 */
simon.ford@mbed.co.uk 0:82220227f4fa 5
simon.ford@mbed.co.uk 0:82220227f4fa 6 #ifndef MBED_DIGITALIN_H
simon.ford@mbed.co.uk 0:82220227f4fa 7 #define MBED_DIGITALIN_H
simon.ford@mbed.co.uk 0:82220227f4fa 8
simon.ford@mbed.co.uk 0:82220227f4fa 9 #include "Base.h"
simon.ford@mbed.co.uk 0:82220227f4fa 10 #include "LPC2300.h"
simon.ford@mbed.co.uk 5:62573be585e9 11 #include "FunctionPointer.h"
simon.ford@mbed.co.uk 0:82220227f4fa 12
simon.ford@mbed.co.uk 0:82220227f4fa 13 namespace mbed {
simon.ford@mbed.co.uk 0:82220227f4fa 14
simon.ford@mbed.co.uk 0:82220227f4fa 15 /* Class: DigitalIn
simon.ford@mbed.co.uk 0:82220227f4fa 16 * A digital input, used for reading the state of a pin
simon.ford@mbed.co.uk 5:62573be585e9 17 *
simon.ford@mbed.co.uk 5:62573be585e9 18 * Example:
simon.ford@mbed.co.uk 5:62573be585e9 19 * > // Flash an LED while a DigitalIn is true
simon.ford@mbed.co.uk 5:62573be585e9 20 * >
simon.ford@mbed.co.uk 5:62573be585e9 21 * > #include "mbed.h"
simon.ford@mbed.co.uk 5:62573be585e9 22 * >
simon.ford@mbed.co.uk 5:62573be585e9 23 * > DigitalIn enable(5);
simon.ford@mbed.co.uk 5:62573be585e9 24 * > DigitalOut led(1);
simon.ford@mbed.co.uk 5:62573be585e9 25 * >
simon.ford@mbed.co.uk 5:62573be585e9 26 * > int main() {
simon.ford@mbed.co.uk 5:62573be585e9 27 * > while(1) {
simon.ford@mbed.co.uk 5:62573be585e9 28 * > if(enable) {
simon.ford@mbed.co.uk 5:62573be585e9 29 * > led = !led;
simon.ford@mbed.co.uk 5:62573be585e9 30 * > }
simon.ford@mbed.co.uk 5:62573be585e9 31 * > wait(0.25);
simon.ford@mbed.co.uk 5:62573be585e9 32 * > }
simon.ford@mbed.co.uk 5:62573be585e9 33 * > }
simon.ford@mbed.co.uk 5:62573be585e9 34 *
simon.ford@mbed.co.uk 5:62573be585e9 35 * Implementation Note:
simon.ford@mbed.co.uk 5:62573be585e9 36 * pin 19 and 20 can not be used with the rise/fall methods
simon.ford@mbed.co.uk 0:82220227f4fa 37 */
simon.ford@mbed.co.uk 0:82220227f4fa 38 class DigitalIn : public Base {
simon.ford@mbed.co.uk 0:82220227f4fa 39
simon.ford@mbed.co.uk 0:82220227f4fa 40 public:
simon.ford@mbed.co.uk 0:82220227f4fa 41
simon.ford@mbed.co.uk 0:82220227f4fa 42 /* Constructor: DigitalIn
simon.ford@mbed.co.uk 0:82220227f4fa 43 * Create a DigitalIn connected to the specified pin
simon.ford@mbed.co.uk 0:82220227f4fa 44 *
simon.ford@mbed.co.uk 0:82220227f4fa 45 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 46 * pin - DigitalIn pin to connect to (5-30)
simon.ford@mbed.co.uk 5:62573be585e9 47 * name - (optional) A string to identify the object
simon.ford@mbed.co.uk 0:82220227f4fa 48 */
simon.ford@mbed.co.uk 4:5d1359a283bc 49 DigitalIn(int pin, const char *name = NULL);
simon.ford@mbed.co.uk 0:82220227f4fa 50
simon.ford@mbed.co.uk 0:82220227f4fa 51 /* Function: read
simon.ford@mbed.co.uk 0:82220227f4fa 52 * Read the input, represented as 0 or 1 (int)
simon.ford@mbed.co.uk 0:82220227f4fa 53 *
simon.ford@mbed.co.uk 0:82220227f4fa 54 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 55 * returns - An integer representing the state of the input pin,
simon.ford@mbed.co.uk 0:82220227f4fa 56 * 0 for logical 0 (0v) and 1 for logical 1 (3.3v)
simon.ford@mbed.co.uk 0:82220227f4fa 57 */
simon.ford@mbed.co.uk 0:82220227f4fa 58 int read();
simon.ford@mbed.co.uk 5:62573be585e9 59
simon.ford@mbed.co.uk 5:62573be585e9 60 /* Function: rise
simon.ford@mbed.co.uk 5:62573be585e9 61 * Attach a function to call when a rising edge occurs on the input
simon.ford@mbed.co.uk 5:62573be585e9 62 *
simon.ford@mbed.co.uk 5:62573be585e9 63 * Variables:
simon.ford@mbed.co.uk 5:62573be585e9 64 * fptr - A pointer to a void function, or 0 to set as none
simon.ford@mbed.co.uk 5:62573be585e9 65 */
simon.ford@mbed.co.uk 5:62573be585e9 66 void rise(void (*fptr)(void));
simon.ford@mbed.co.uk 5:62573be585e9 67
simon.ford@mbed.co.uk 5:62573be585e9 68 /* Function: rise
simon.ford@mbed.co.uk 5:62573be585e9 69 * Attach a member function to call when a rising edge occurs on the input
simon.ford@mbed.co.uk 5:62573be585e9 70 *
simon.ford@mbed.co.uk 5:62573be585e9 71 * Variables:
simon.ford@mbed.co.uk 5:62573be585e9 72 * tptr - pointer to the object to call the member function on
simon.ford@mbed.co.uk 5:62573be585e9 73 * mptr - pointer to the member function to be called
simon.ford@mbed.co.uk 5:62573be585e9 74 */
simon.ford@mbed.co.uk 5:62573be585e9 75 template<typename T>
simon.ford@mbed.co.uk 5:62573be585e9 76 void rise(T* tptr, void (T::*mptr)(void)) {
simon.ford@mbed.co.uk 5:62573be585e9 77 _rise.attach(tptr, mptr);
simon.ford@mbed.co.uk 5:62573be585e9 78 setup_interrupt(1, 1);
simon.ford@mbed.co.uk 5:62573be585e9 79 }
simon.ford@mbed.co.uk 0:82220227f4fa 80
simon.ford@mbed.co.uk 5:62573be585e9 81 /* Function: fall
simon.ford@mbed.co.uk 5:62573be585e9 82 * Attach a function to call when a falling edge occurs on the input
simon.ford@mbed.co.uk 5:62573be585e9 83 *
simon.ford@mbed.co.uk 5:62573be585e9 84 * Variables:
simon.ford@mbed.co.uk 5:62573be585e9 85 * fptr - A pointer to a void function, or 0 to set as none
simon.ford@mbed.co.uk 5:62573be585e9 86 */
simon.ford@mbed.co.uk 5:62573be585e9 87 void fall(void (*fptr)(void));
simon.ford@mbed.co.uk 0:82220227f4fa 88
simon.ford@mbed.co.uk 5:62573be585e9 89 /* Function: fall
simon.ford@mbed.co.uk 5:62573be585e9 90 * Attach a member function to call when a falling edge occurs on the input
simon.ford@mbed.co.uk 5:62573be585e9 91 *
simon.ford@mbed.co.uk 5:62573be585e9 92 * Variables:
simon.ford@mbed.co.uk 5:62573be585e9 93 * tptr - pointer to the object to call the member function on
simon.ford@mbed.co.uk 5:62573be585e9 94 * mptr - pointer to the member function to be called
simon.ford@mbed.co.uk 5:62573be585e9 95 */
simon.ford@mbed.co.uk 5:62573be585e9 96 template<typename T>
simon.ford@mbed.co.uk 5:62573be585e9 97 void fall(T* tptr, void (T::*mptr)(void)) {
simon.ford@mbed.co.uk 5:62573be585e9 98 _fall.attach(tptr, mptr);
simon.ford@mbed.co.uk 5:62573be585e9 99 setup_interrupt(0, 1);
simon.ford@mbed.co.uk 5:62573be585e9 100 }
simon.ford@mbed.co.uk 5:62573be585e9 101
simon.ford@mbed.co.uk 0:82220227f4fa 102 /* Function: operator int()
simon.ford@mbed.co.uk 5:62573be585e9 103 * An operator shorthand for <read()>
simon.ford@mbed.co.uk 0:82220227f4fa 104 */
simon.ford@mbed.co.uk 0:82220227f4fa 105 operator int();
simon.ford@mbed.co.uk 0:82220227f4fa 106
simon.ford@mbed.co.uk 5:62573be585e9 107 // interrupt
simon.ford@mbed.co.uk 5:62573be585e9 108 static void _irq();
simon.ford@mbed.co.uk 5:62573be585e9 109 static DigitalIn *_irq_objects[48];
simon.ford@mbed.co.uk 4:5d1359a283bc 110
simon.ford@mbed.co.uk 5:62573be585e9 111 // rpc
simon.ford@mbed.co.uk 5:62573be585e9 112 virtual const struct rpc_method *get_rpc_methods();
simon.ford@mbed.co.uk 5:62573be585e9 113 static struct rpc_class *get_rpc_class();
simon.ford@mbed.co.uk 5:62573be585e9 114
simon.ford@mbed.co.uk 0:82220227f4fa 115 protected:
simon.ford@mbed.co.uk 0:82220227f4fa 116
simon.ford@mbed.co.uk 0:82220227f4fa 117 LPC2300::GPIORF* _rf;
simon.ford@mbed.co.uk 0:82220227f4fa 118 unsigned int _mask;
simon.ford@mbed.co.uk 0:82220227f4fa 119 int _id;
simon.ford@mbed.co.uk 0:82220227f4fa 120
simon.ford@mbed.co.uk 5:62573be585e9 121 void setup_interrupt(int rising, int enable);
simon.ford@mbed.co.uk 5:62573be585e9 122 FunctionPointer _rise;
simon.ford@mbed.co.uk 5:62573be585e9 123 FunctionPointer _fall;
simon.ford@mbed.co.uk 0:82220227f4fa 124 };
simon.ford@mbed.co.uk 0:82220227f4fa 125
simon.ford@mbed.co.uk 0:82220227f4fa 126 }
simon.ford@mbed.co.uk 0:82220227f4fa 127
simon.ford@mbed.co.uk 1:6b7f447ca868 128 #endif
simon.ford@mbed.co.uk 1:6b7f447ca868 129