Demos/OTG/TestApp/TestApp.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Main source file for the TestApp demo. This file contains the main tasks of the demo and
  34  *  is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "TestApp.h"
  38
  39 /** Main program entry point. This routine configures the hardware required by the application, then
  40  *  starts the scheduler to run the application tasks.
  41  */
  42 int main(void)
  43 {
  44         SetupHardware();
  45
  46         puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
  47                     "LUFA Demo running.\r\n" ESC_INVERSE_OFF));
  48
  49         for (;;)
  50         {
  51                 CheckJoystick();
  52                 CheckButton();
  53                 CheckTemperature();
  54
  55                 /* Clear output-compare flag (logic 1 clears the flag) */
  56                 TIFR0 |= (1 << OCF0A);
  57
  58                 USB_USBTask();
  59         }
  60 }
  61
  62 void SetupHardware(void)
  63 {
  64         /* Disable watchdog if enabled by bootloader/fuses */
  65         MCUSR &= ~(1 << WDRF);
  66         wdt_disable();
  67
  68         /* Disable clock division */
  69         clock_prescale_set(clock_div_1);
  70
  71         /* Hardware initialization */
  72         SerialStream_Init(9600, false);
  73         ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_64);
  74         Temperature_Init();
  75         Joystick_Init();
  76         LEDs_Init();
  77         Buttons_Init();
  78
  79         /* Millisecond timer initialization */
  80         OCR0A  = 0x7D;
  81         TCCR0A = (1 << WGM01);
  82         TCCR0B = ((1 << CS01) | (1 << CS00));
  83 }
  84
  85 /** Task responsible for checking the joystick position, and displaying the joystick position onto the
  86  *  board LEDs.
  87  */
  88 void CheckJoystick(void)
  89 {
  90         uint8_t JoyStatus_LCL = Joystick_GetStatus();
  91         uint8_t LEDMask       = LEDS_NO_LEDS;
  92
  93         if (JoyStatus_LCL & JOY_UP)
  94           LEDMask |= LEDS_LED1;
  95
  96         if (JoyStatus_LCL & JOY_DOWN)
  97           LEDMask |= LEDS_LED2;
  98
  99         if (JoyStatus_LCL & JOY_LEFT)
 100           LEDMask |= LEDS_LED3;
 101
 102         if (JoyStatus_LCL & JOY_RIGHT)
 103           LEDMask |= LEDS_LED4;
 104
 105         if (JoyStatus_LCL & JOY_PRESS)
 106           LEDMask  = LEDS_ALL_LEDS;
 107
 108         LEDs_SetAllLEDs(LEDMask);
 109 }
 110
 111 /** Task responsible for checking the current temperature via the temperature sensor mounted on the
 112  *  board, and displaying it through the serial USART.
 113  */
 114 void CheckTemperature(void)
 115 {
 116         static uint16_t MSElapsed = 0;
 117
 118         if (TIFR0 & (1 << OCF0A))
 119           MSElapsed++;
 120
 121         /* Task runs every 10000 ticks, 10 seconds for this demo */
 122         if (MSElapsed == 1000)
 123         {
 124                 printf_P(PSTR("Current temperature: %d Degrees Celcius\r\n\r\n"),
 125                          (int8_t)Temperature_GetTemperature());
 126
 127                 MSElapsed = 0;
 128         }
 129 }
 130
 131 /** Task responsible for checking the board's first button' position, and start-stopping other tasks and the USB
 132  *  interface in response to user joystick movements.
 133  */
 134 void CheckButton(void)
 135 {
 136         static uint16_t DebounceMSElapsed = 0;
 137         static bool     IsPressed;
 138
 139         if (TIFR0 & (1 << OCF0A))
 140           DebounceMSElapsed++;
 141
 142         if (Buttons_GetStatus() & BUTTONS_BUTTON1)
 143         {
 144                 if (!(IsPressed) && (DebounceMSElapsed == 100))
 145                 {
 146                         IsPressed = true;
 147
 148                         if (USB_IsInitialized == true)
 149                         {
 150                                 USB_ShutDown();
 151                                 puts_P(PSTR(ESC_BG_WHITE "USB Power Off.\r\n"));
 152                         }
 153                         else
 154                         {
 155                                 puts_P(PSTR(ESC_BG_YELLOW "USB Power On.\r\n"));
 156                                 USB_Init(USB_MODE_UID, USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL);
 157                         }
 158                 }
 159         }
 160     else
 161     {
 162                 DebounceMSElapsed = 0;
 163                 IsPressed = false;
 164         }
 165 }