LEDStatus.h

00001 /*******************************************************************************
00002 * Author: Shaun Kelsey, shaun.kelsey@maximintegrated.com
00003 * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
00004 *
00005 * Permission is hereby granted, free of charge, to any person obtaining a
00006 * copy of this software and associated documentation files (the "Software"),
00007 * to deal in the Software without restriction, including without limitation
00008 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
00009 * and/or sell copies of the Software, and to permit persons to whom the
00010 * Software is furnished to do so, subject to the following conditions:
00011 *
00012 * The above copyright notice and this permission notice shall be included
00013 * in all copies or substantial portions of the Software.
00014 *
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00016 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00017 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00018 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
00019 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
00020 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00021 * OTHER DEALINGS IN THE SOFTWARE.
00022 *
00023 * Except as contained in this notice, the name of Maxim Integrated
00024 * Products, Inc. shall not be used except as stated in the Maxim Integrated
00025 * Products, Inc. Branding Policy.
00026 *
00027 * The mere transfer of this software does not imply any licenses
00028 * of trade secrets, proprietary technology, copyrights, patents,
00029 * trademarks, maskwork rights, or any other form of intellectual
00030 * property whatsoever. Maxim Integrated Products, Inc. retains all
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00032 *******************************************************************************
00033 */
00034 
00035 #ifndef _LEDSTATUS_H_
00036 #define _LEDSTATUS_H_
00037 #include "mbed.h"
00038 
00039 class LEDStatus
00040 {
00041 public:
00042 
00043     /** Create an LED_Status controller
00044      * 
00045      *  @param red PinName of red LED
00046      *  @param rstate Initial state of red LED
00047      *  @param green PinName of green LED
00048      *  @param gstate Initial state of green LED
00049      *  @param blue PinName of blue LED
00050      *  @param bstate Initial state of blue LED
00051      */
00052     LEDStatus(PinName red, int rstate, PinName green, int gstate, PinName blue, int bstate);
00053 
00054     /** Set the active state of each LED
00055      *
00056      *  @param rstate active state of red LED
00057      *  @param gstate active state of green LED
00058      *  @param bstate active state of blue LED
00059      */
00060     void set_state(int rstate, int gstate, int bstate);
00061 
00062     /** Set and keep the LEDs in their active state */
00063     void solid();
00064 
00065     /** Set the LEDs to toggle between their active state and their off state
00066      *
00067      *  @param ontime The amount of time (in milliseconds) to remain in the active state
00068      *  @param offtime The amount of time (in milliseconds) to remain off
00069      *  @param nb The number of times to blink before remaining in the off state
00070      *                  Set to -1 to blink indefinitely
00071      *
00072      */
00073     void blink(int ontime, int offtime, int nb = -1);
00074 
00075     /** Set the LEDs to toggle between their active state and their off state
00076      *
00077      *  @param period The period of each blink (in milliseconds)
00078      *  @param offtime The percentage of the period during which the LEDs will be in their active state
00079      *  @param nb The number of times to blink before remaining in the off state
00080      *                  Set to -1 to blink indefinitely
00081      */
00082     void blink(int period, float duty, int nb = -1);
00083 
00084     /** Get whether LEDState is in the blinking state
00085      */
00086     bool is_blinking();
00087 
00088     /** Called in main loop of program to advance the state of the class
00089      *  @detail Instead of using a Ticker and generating additional interrupts and overhead,
00090      *          LEDStatus relies on update being called at a decent interval in order
00091      *          to advance its interval time keeping and blink LEDs and the correct rate.
00092      *          If only using solid() mode, update() does not need to be called.
00093      */
00094     void update();
00095 
00096 private:
00097 
00098     DigitalOut rLED;
00099     DigitalOut gLED;
00100     DigitalOut bLED;
00101 
00102     int r_act;
00103     int g_act;
00104     int b_act;
00105 
00106     bool blinking;
00107     bool bs;
00108     int count;
00109     int total;
00110 
00111     uint64_t ont_us;
00112     uint64_t offt_us;
00113 
00114     Timer timer;
00115 
00116 };
00117 
00118 #endif
00119