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_FG_CYAN "LUFA Demo running.\r\n" ESC_FG_WHITE));
  47
  48         for (;;)
  49         {
  50                 CheckJoystick();
  51                 CheckButton();
  52                 CheckTemperature();
  53
  54                 /* Clear output-compare flag (logic 1 clears the flag) */
  55                 TIFR0 |= (1 << OCF0A);
  56
  57                 USB_USBTask();
  58         }
  59 }
  60
  61 void SetupHardware(void)
  62 {
  63         /* Disable watchdog if enabled by bootloader/fuses */
  64         MCUSR &= ~(1 << WDRF);
  65         wdt_disable();
  66
  67         /* Disable clock division */
  68         clock_prescale_set(clock_div_1);
  69
  70         /* Hardware initialization */
  71         SerialStream_Init(9600, false);
  72         ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_64);
  73         Temperature_Init();
  74         Joystick_Init();
  75         LEDs_Init();
  76         Buttons_Init();
  77
  78         /* Millisecond timer initialization */
  79         OCR0A  = 0x7D;
  80         TCCR0A = (1 << WGM01);
  81         TCCR0B = ((1 << CS01) | (1 << CS00));
  82 }
  83
  84 /** Task responsible for checking the joystick position, and displaying the joystick position onto the
  85  *  board LEDs.
  86  */
  87 void CheckJoystick(void)
  88 {
  89         uint8_t JoyStatus_LCL = Joystick_GetStatus();
  90         uint8_t LEDMask       = LEDS_NO_LEDS;
  91
  92         if (JoyStatus_LCL & JOY_UP)
  93           LEDMask |= LEDS_LED1;
  94
  95         if (JoyStatus_LCL & JOY_DOWN)
  96           LEDMask |= LEDS_LED2;
  97
  98         if (JoyStatus_LCL & JOY_LEFT)
  99           LEDMask |= LEDS_LED3;
 100
 101         if (JoyStatus_LCL & JOY_RIGHT)
 102           LEDMask |= LEDS_LED4;
 103
 104         if (JoyStatus_LCL & JOY_PRESS)
 105           LEDMask  = LEDS_ALL_LEDS;
 106
 107         LEDs_SetAllLEDs(LEDMask);
 108 }
 109
 110 /** Task responsible for checking the current temperature via the temperature sensor mounted on the
 111  *  board, and displaying it through the serial USART.
 112  */
 113 void CheckTemperature(void)
 114 {
 115         static uint16_t MSElapsed = 0;
 116
 117         if (TIFR0 & (1 << OCF0A))
 118           MSElapsed++;
 119
 120         /* Task runs every 10000 ticks, 10 seconds for this demo */
 121         if (MSElapsed == 1000)
 122         {
 123                 printf_P(PSTR("Current temperature: %d Degrees Celcius\r\n\r\n"),
 124                          (int8_t)Temperature_GetTemperature());
 125
 126                 MSElapsed = 0;
 127         }
 128 }
 129
 130 /** Task responsible for checking the board's first button' position, and start-stopping other tasks and the USB
 131  *  interface in response to user joystick movements.
 132  */
 133 void CheckButton(void)
 134 {
 135         static uint16_t DebounceMSElapsed = 0;
 136         static bool     IsPressed;
 137
 138         if (TIFR0 & (1 << OCF0A))
 139           DebounceMSElapsed++;
 140
 141         if (Buttons_GetStatus() & BUTTONS_BUTTON1)
 142         {
 143                 if (!(IsPressed) && (DebounceMSElapsed == 100))
 144                 {
 145                         IsPressed = true;
 146
 147                         if (USB_IsInitialized == true)
 148                         {
 149                                 USB_ShutDown();
 150                                 puts_P(PSTR(ESC_FG_YELLOW "USB Power Off.\r\n" ESC_FG_WHITE));
 151                         }
 152                         else
 153                         {
 154                                 puts_P(PSTR(ESC_FG_YELLOW "USB Power On.\r\n" ESC_FG_WHITE));
 155                                 USB_Init(USB_MODE_UID, USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL);
 156                         }
 157                 }
 158         }
 159     else
 160     {
 161                 DebounceMSElapsed = 0;
 162                 IsPressed = false;
 163         }
 164 }