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Revision 30, 1.8 kB
(checked in by emilmont, 6 months ago)
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Add additional M0 peripherals implementations, fix GCC stdio/uart
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| 1 | /* mbed Microcontroller Library - PortInOut |
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| 2 | * Copyright (c) 2006-2011 ARM Limited. All rights reserved. |
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| 3 | */ |
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| 4 | |
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| 5 | #ifndef MBED_PORTIN_H |
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| 6 | #define MBED_PORTIN_H |
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| 7 | |
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| 8 | #include "device.h" |
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| 9 | |
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| 10 | #if DEVICE_PORTIN |
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| 11 | |
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| 12 | #include "PortNames.h" |
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| 13 | #include "PinNames.h" |
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| 14 | |
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| 15 | namespace mbed { |
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| 16 | |
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| 17 | /* Class: PortIn |
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| 18 | * A multiple pin digital input |
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| 19 | * |
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| 20 | * Example: |
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| 21 | * > // Switch on an LED if any of mbed pins 21-26 is high |
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| 22 | * > |
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| 23 | * > #include "mbed.h" |
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| 24 | * > |
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| 25 | * > PortIn p(Port2, 0x0000003F); // p21-p26 |
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| 26 | * > DigitalOut ind(LED4); |
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| 27 | * > |
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| 28 | * > int main() { |
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| 29 | * > while(1) { |
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| 30 | * > int pins = p.read(); |
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| 31 | * > if(pins) { |
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| 32 | * > ind = 1; |
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| 33 | * > } else { |
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| 34 | * > ind = 0; |
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| 35 | * > } |
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| 36 | * > } |
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| 37 | * > } |
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| 38 | */ |
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| 39 | class PortIn { |
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| 40 | public: |
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| 41 | |
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| 42 | /* Constructor: PortIn |
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| 43 | * Create an PortIn, connected to the specified port |
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| 44 | * |
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| 45 | * Variables: |
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| 46 | * port - Port to connect to (Port0-Port5) |
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| 47 | * mask - A bitmask to identify which bits in the port should be included (0 - ignore) |
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| 48 | */ |
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| 49 | PortIn(PortName port, int mask = 0xFFFFFFFF); |
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| 50 | |
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| 51 | /* Function: read |
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| 52 | * Read the value currently output on the port |
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| 53 | * |
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| 54 | * Variables: |
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| 55 | * returns - An integer with each bit corresponding to associated port pin setting |
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| 56 | */ |
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| 57 | int read(); |
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| 58 | |
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| 59 | /* Function: mode |
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| 60 | * Set the input pin mode |
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| 61 | * |
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| 62 | * Variables: |
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| 63 | * mode - PullUp, PullDown, PullNone, OpenDrain |
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| 64 | */ |
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| 65 | void mode(PinMode mode); |
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| 66 | |
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| 67 | /* Function: operator int() |
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| 68 | * A shorthand for <read> |
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| 69 | */ |
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| 70 | operator int() { |
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| 71 | return read(); |
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| 72 | } |
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| 73 | |
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| 74 | private: |
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| 75 | #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) |
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| 76 | LPC_GPIO_TypeDef *_gpio; |
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| 77 | #endif |
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| 78 | PortName _port; |
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| 79 | uint32_t _mask; |
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| 80 | }; |
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| 81 | |
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| 82 | } // namespace mbed |
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| 83 | |
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| 84 | #endif |
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| 85 | |
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| 86 | #endif |
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