ButtonController.cpp

00001 /**************************************************************************//**
00002  * @file     ButtonController.cpp
00003  * @brief    Base class for wrapping the interface with the GPIO Extender.
00004  * @version: V1.0
00005  * @date:    9/17/2019
00006 
00007  *
00008  * @note
00009  * Copyright (C) 2019 E3 Design. All rights reserved.
00010  *
00011  * @par
00012  * E3 Designers LLC is supplying this software for use with Cortex-M3 LPC1768
00013  * processor based microcontroller for the ESCM 2000 Monitor and Display.  
00014  *  *
00015  * @par
00016  * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
00017  * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
00018  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
00019  * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
00020  * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
00021  *
00022  ******************************************************************************/
00023 #include "ButtonController.h"
00024 
00025 
00026 /******************************************************************************/
00027 ButtonController::ButtonController()
00028 {
00029     
00030     spi_io_exp = new mcp23s08 (p5, p6, p7, p26, 0x20);
00031     
00032     // ---------------------------------------
00033     // set pin modes
00034     // ---------------------------------------
00035     spi_io_exp->gpioPinMode(0,0);
00036     spi_io_exp->gpioPinMode(1,0);
00037     spi_io_exp->gpioPinMode(2,0);
00038     spi_io_exp->gpioPinMode(3,0);
00039     spi_io_exp->gpioPinMode(4,0);
00040     spi_io_exp->gpioPinMode(5,1);
00041     spi_io_exp->gpioPinMode(6,1);
00042     spi_io_exp->gpioPinMode(7,1);
00043     
00044     // ---------------------------------------
00045     // enable the audio amplifier
00046     // ---------------------------------------
00047     spi_io_exp->gpioPinMode(5,1);
00048     spi_io_exp->gpioDigitalWrite(5,1);
00049     spi_io_exp->gpioDigitalWrite(6,0);
00050     spi_io_exp->gpioDigitalWrite(7,0);
00051     
00052 }
00053 
00054 /******************************************************************************/
00055 ButtonController::~ButtonController()
00056 {
00057     
00058 }
00059 
00060 /******************************************************************************/
00061 void ButtonController::init(void)
00062 {
00063     
00064 }
00065 
00066 /******************************************************************************/
00067 void ButtonController::processCmdQueue(Menu * activeMenu)
00068 {
00069     while (!cmd_queue.empty()) {
00070         
00071         uint8_t e;
00072         
00073         cmd_queue.pop(e);
00074         
00075         printf("\n<%02x>", e);
00076 
00077         switch(e) {
00078             case 0x01://up
00079                 activeMenu->pressUp();
00080                 break;
00081 
00082             case 0x02://down
00083                 activeMenu->pressDown();
00084                 break;
00085 
00086             case 0x04://clear
00087                 activeMenu->pressClear();
00088                 break;
00089 
00090             case 0x08://mode
00091                 activeMenu->pressMode();
00092                 break;
00093 
00094             case 0x10://set
00095                 activeMenu->pressSet();
00096                 break;
00097             default:
00098                 break;
00099         }
00100     }
00101 }
00102 
00103 
00104 /******************************************************************************/
00105 uint8_t ButtonController::getCurrentState()
00106 {
00107     currentValue = spi_io_exp->readGpioPort();
00108     
00109     return currentValue;
00110 }
00111 
00112 
00113 /******************************************************************************/
00114 void ButtonController::update(void)
00115 {        
00116 
00117     int trigger_action = 0;
00118     
00119     currentValue = spi_io_exp->readGpioPort() ;
00120     currentValue = (~currentValue & 0x1F); // clear bit is stuck
00121     
00122     // if (raising edge | falling edge )
00123     if (currentValue != prevValue ) {
00124         prevValue = currentValue;
00125         countsSinceChange = 0;        
00126         trigger_action = 1;
00127 
00128     }
00129     else
00130     {   //TODO: play with time for what is short or long hold
00131         countsSinceChange++;
00132         if ( currentValue != NO_BUTTON && countsSinceChange>=10000)
00133         {
00134             if (isHeld != 2) printf("Button Long Held:%d\n\r",currentValue);
00135             isHeld = 2;
00136             trigger_action = 1;
00137             countsSinceChange = 0;
00138         }
00139         else if (currentValue != NO_BUTTON && countsSinceChange>=5000)
00140         {
00141             if (isHeld != 1) printf("Button Short Held:%d\n\r",currentValue);
00142             isHeld = 1;
00143             trigger_action = 1;
00144             countsSinceChange = 0;
00145         }
00146         else
00147         {
00148             isHeld =0;
00149         }
00150     }
00151     
00152     
00153     if (trigger_action)
00154     {    
00155         if (currentValue && !cmd_queue.full())  {
00156             cmd_queue.push(currentValue);
00157         }
00158         trigger_action = 0;
00159         
00160     }
00161 }
00162 
00163 
00164 /******************************************************************************/
00165 void ButtonController::pressButtonUp(void)
00166 {
00167     printf("Up Button Pressed:%d\n\r",currentValue);
00168 }
00169 
00170 /******************************************************************************/
00171 void ButtonController::pressButtonDown(void)
00172 {
00173     printf("Down Button Pressed:%d\n\r",currentValue);
00174 }
00175 
00176 /******************************************************************************/
00177 void ButtonController::pressButtonSet(void)
00178 {
00179     printf("Set Button Pressed:%d\n\r",currentValue);
00180 }
00181 
00182 /******************************************************************************/
00183 void ButtonController::pressButtonMode(void)
00184 {
00185     printf("Mode Button Pressed:%d\n\r",currentValue);
00186 }
00187 
00188 /******************************************************************************/
00189 void ButtonController::pressButtonClear(void)
00190 {
00191     printf("Clear Button Pressed:%d\n\r",currentValue);
00192 }
00193 
00194 /******************************************************************************/
00195 void ButtonController::releaseButton(void)
00196 {
00197     //printf("Button Released:%d\n\r",currentValue);
00198     isHeld = 0;
00199     countsSinceChange = 0;
00200 }
00201 /******************************************************************************/