fix LPC812 PWM
Fork of mbed-dev by
api/DigitalIn.h@0:9b334a45a8ff, 2015-10-01 (annotated)
- Committer:
- bogdanm
- Date:
- Thu Oct 01 15:25:22 2015 +0300
- Revision:
- 0:9b334a45a8ff
Initial commit on mbed-dev
Replaces mbed-src (now inactive)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /* mbed Microcontroller Library |
bogdanm | 0:9b334a45a8ff | 2 | * Copyright (c) 2006-2013 ARM Limited |
bogdanm | 0:9b334a45a8ff | 3 | * |
bogdanm | 0:9b334a45a8ff | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 0:9b334a45a8ff | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 0:9b334a45a8ff | 6 | * You may obtain a copy of the License at |
bogdanm | 0:9b334a45a8ff | 7 | * |
bogdanm | 0:9b334a45a8ff | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 0:9b334a45a8ff | 9 | * |
bogdanm | 0:9b334a45a8ff | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 0:9b334a45a8ff | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 0:9b334a45a8ff | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 0:9b334a45a8ff | 13 | * See the License for the specific language governing permissions and |
bogdanm | 0:9b334a45a8ff | 14 | * limitations under the License. |
bogdanm | 0:9b334a45a8ff | 15 | */ |
bogdanm | 0:9b334a45a8ff | 16 | #ifndef MBED_DIGITALIN_H |
bogdanm | 0:9b334a45a8ff | 17 | #define MBED_DIGITALIN_H |
bogdanm | 0:9b334a45a8ff | 18 | |
bogdanm | 0:9b334a45a8ff | 19 | #include "platform.h" |
bogdanm | 0:9b334a45a8ff | 20 | |
bogdanm | 0:9b334a45a8ff | 21 | #include "gpio_api.h" |
bogdanm | 0:9b334a45a8ff | 22 | |
bogdanm | 0:9b334a45a8ff | 23 | namespace mbed { |
bogdanm | 0:9b334a45a8ff | 24 | |
bogdanm | 0:9b334a45a8ff | 25 | /** A digital input, used for reading the state of a pin |
bogdanm | 0:9b334a45a8ff | 26 | * |
bogdanm | 0:9b334a45a8ff | 27 | * Example: |
bogdanm | 0:9b334a45a8ff | 28 | * @code |
bogdanm | 0:9b334a45a8ff | 29 | * // Flash an LED while a DigitalIn is true |
bogdanm | 0:9b334a45a8ff | 30 | * |
bogdanm | 0:9b334a45a8ff | 31 | * #include "mbed.h" |
bogdanm | 0:9b334a45a8ff | 32 | * |
bogdanm | 0:9b334a45a8ff | 33 | * DigitalIn enable(p5); |
bogdanm | 0:9b334a45a8ff | 34 | * DigitalOut led(LED1); |
bogdanm | 0:9b334a45a8ff | 35 | * |
bogdanm | 0:9b334a45a8ff | 36 | * int main() { |
bogdanm | 0:9b334a45a8ff | 37 | * while(1) { |
bogdanm | 0:9b334a45a8ff | 38 | * if(enable) { |
bogdanm | 0:9b334a45a8ff | 39 | * led = !led; |
bogdanm | 0:9b334a45a8ff | 40 | * } |
bogdanm | 0:9b334a45a8ff | 41 | * wait(0.25); |
bogdanm | 0:9b334a45a8ff | 42 | * } |
bogdanm | 0:9b334a45a8ff | 43 | * } |
bogdanm | 0:9b334a45a8ff | 44 | * @endcode |
bogdanm | 0:9b334a45a8ff | 45 | */ |
bogdanm | 0:9b334a45a8ff | 46 | class DigitalIn { |
bogdanm | 0:9b334a45a8ff | 47 | |
bogdanm | 0:9b334a45a8ff | 48 | public: |
bogdanm | 0:9b334a45a8ff | 49 | /** Create a DigitalIn connected to the specified pin |
bogdanm | 0:9b334a45a8ff | 50 | * |
bogdanm | 0:9b334a45a8ff | 51 | * @param pin DigitalIn pin to connect to |
bogdanm | 0:9b334a45a8ff | 52 | */ |
bogdanm | 0:9b334a45a8ff | 53 | DigitalIn(PinName pin) : gpio() { |
bogdanm | 0:9b334a45a8ff | 54 | gpio_init_in(&gpio, pin); |
bogdanm | 0:9b334a45a8ff | 55 | } |
bogdanm | 0:9b334a45a8ff | 56 | |
bogdanm | 0:9b334a45a8ff | 57 | /** Create a DigitalIn connected to the specified pin |
bogdanm | 0:9b334a45a8ff | 58 | * |
bogdanm | 0:9b334a45a8ff | 59 | * @param pin DigitalIn pin to connect to |
bogdanm | 0:9b334a45a8ff | 60 | * @param mode the initial mode of the pin |
bogdanm | 0:9b334a45a8ff | 61 | */ |
bogdanm | 0:9b334a45a8ff | 62 | DigitalIn(PinName pin, PinMode mode) : gpio() { |
bogdanm | 0:9b334a45a8ff | 63 | gpio_init_in_ex(&gpio, pin, mode); |
bogdanm | 0:9b334a45a8ff | 64 | } |
bogdanm | 0:9b334a45a8ff | 65 | /** Read the input, represented as 0 or 1 (int) |
bogdanm | 0:9b334a45a8ff | 66 | * |
bogdanm | 0:9b334a45a8ff | 67 | * @returns |
bogdanm | 0:9b334a45a8ff | 68 | * An integer representing the state of the input pin, |
bogdanm | 0:9b334a45a8ff | 69 | * 0 for logical 0, 1 for logical 1 |
bogdanm | 0:9b334a45a8ff | 70 | */ |
bogdanm | 0:9b334a45a8ff | 71 | int read() { |
bogdanm | 0:9b334a45a8ff | 72 | return gpio_read(&gpio); |
bogdanm | 0:9b334a45a8ff | 73 | } |
bogdanm | 0:9b334a45a8ff | 74 | |
bogdanm | 0:9b334a45a8ff | 75 | /** Set the input pin mode |
bogdanm | 0:9b334a45a8ff | 76 | * |
bogdanm | 0:9b334a45a8ff | 77 | * @param mode PullUp, PullDown, PullNone, OpenDrain |
bogdanm | 0:9b334a45a8ff | 78 | */ |
bogdanm | 0:9b334a45a8ff | 79 | void mode(PinMode pull) { |
bogdanm | 0:9b334a45a8ff | 80 | gpio_mode(&gpio, pull); |
bogdanm | 0:9b334a45a8ff | 81 | } |
bogdanm | 0:9b334a45a8ff | 82 | |
bogdanm | 0:9b334a45a8ff | 83 | /** Return the output setting, represented as 0 or 1 (int) |
bogdanm | 0:9b334a45a8ff | 84 | * |
bogdanm | 0:9b334a45a8ff | 85 | * @returns |
bogdanm | 0:9b334a45a8ff | 86 | * Non zero value if pin is connected to uc GPIO |
bogdanm | 0:9b334a45a8ff | 87 | * 0 if gpio object was initialized with NC |
bogdanm | 0:9b334a45a8ff | 88 | */ |
bogdanm | 0:9b334a45a8ff | 89 | int is_connected() { |
bogdanm | 0:9b334a45a8ff | 90 | return gpio_is_connected(&gpio); |
bogdanm | 0:9b334a45a8ff | 91 | } |
bogdanm | 0:9b334a45a8ff | 92 | |
bogdanm | 0:9b334a45a8ff | 93 | #ifdef MBED_OPERATORS |
bogdanm | 0:9b334a45a8ff | 94 | /** An operator shorthand for read() |
bogdanm | 0:9b334a45a8ff | 95 | */ |
bogdanm | 0:9b334a45a8ff | 96 | operator int() { |
bogdanm | 0:9b334a45a8ff | 97 | return read(); |
bogdanm | 0:9b334a45a8ff | 98 | } |
bogdanm | 0:9b334a45a8ff | 99 | #endif |
bogdanm | 0:9b334a45a8ff | 100 | |
bogdanm | 0:9b334a45a8ff | 101 | protected: |
bogdanm | 0:9b334a45a8ff | 102 | gpio_t gpio; |
bogdanm | 0:9b334a45a8ff | 103 | }; |
bogdanm | 0:9b334a45a8ff | 104 | |
bogdanm | 0:9b334a45a8ff | 105 | } // namespace mbed |
bogdanm | 0:9b334a45a8ff | 106 | |
bogdanm | 0:9b334a45a8ff | 107 | #endif |