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 /* Scheduler Task List */
  40 TASK_LIST
  41 {
  42         { Task: TestApp_CheckJoystick, TaskStatus: TASK_RUN  },
  43         { Task: TestApp_CheckHWB     , TaskStatus: TASK_RUN  },
  44         { Task: TestApp_CheckTemp    , TaskStatus: TASK_RUN  },
  45         { Task: USB_USBTask          , TaskStatus: TASK_RUN  },
  46 };
  47
  48 /** Main program entry point. This routine configures the hardware required by the application, then
  49  *  starts the scheduler to run the application tasks.
  50  */
  51 int main(void)
  52 {
  53         /* Disable watchdog if enabled by bootloader/fuses */
  54         MCUSR &= ~(1 << WDRF);
  55         wdt_disable();
  56
  57         /* Disable clock division */
  58         clock_prescale_set(clock_div_1);
  59
  60         /* Hardware initialization */
  61         SerialStream_Init(9600, false);
  62         ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_64);
  63         Temperature_Init();
  64         Joystick_Init();
  65         LEDs_Init();
  66         HWB_Init();
  67
  68         /* Millisecond timer initialization, with output compare interrupt enabled */
  69         OCR0A  = 0x7D;
  70         TCCR0A = (1 << WGM01);
  71         TCCR0B = ((1 << CS01) | (1 << CS00));
  72         TIMSK0 = (1 << OCIE0A);
  73
  74         /* Turn on interrupts */
  75         sei();
  76
  77     /* Start-up message via USART */
  78         puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
  79                "LUFA Demo running.\r\n" ESC_INVERSE_OFF));
  80
  81         /* Scheduling - routine never returns, so put this last in the main function */
  82         Scheduler_Start();
  83 }
  84
  85 /** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and increments the
  86  *  scheduler tick counter.
  87  */
  88 ISR(TIMER0_COMPA_vect, ISR_BLOCK)
  89 {
  90         /* Scheduler test - increment scheduler tick counter once each millisecond */
  91         Scheduler_TickCounter++;
  92 }
  93
  94 /** Task responsible for checking the joystick position, and displaying the joystick position onto the
  95  *  board LEDs.
  96  */
  97 TASK(TestApp_CheckJoystick)
  98 {
  99         uint8_t JoyStatus_LCL = Joystick_GetStatus();
 100         uint8_t LEDMask       = 0;
 101
 102         /* Test of the Joystick - change a mask in response to joystick */
 103         if (JoyStatus_LCL & JOY_UP)
 104           LEDMask |= LEDS_LED1;
 105
 106         if (JoyStatus_LCL & JOY_DOWN)
 107           LEDMask |= LEDS_LED2;
 108
 109         if (JoyStatus_LCL & JOY_LEFT)
 110           LEDMask |= LEDS_LED3;
 111
 112         if (JoyStatus_LCL & JOY_RIGHT)
 113           LEDMask |= LEDS_LED4;
 114
 115         if (JoyStatus_LCL & JOY_PRESS)
 116           LEDMask  = LEDS_ALL_LEDS;
 117
 118         /* Test of LEDs - light up in response to joystick */
 119         LEDs_SetAllLEDs(LEDMask);
 120 }
 121
 122 /** Task responsible for checking the current temperature via the temperature sensor mounted on the
 123  *  board, and displaying it through the serial USART.
 124  */
 125 TASK(TestApp_CheckTemp)
 126 {
 127         static SchedulerDelayCounter_t DelayCounter = 10000; // Force immediate run on start-up
 128
 129         /* Task runs every 10000 ticks, 10 seconds for this demo */
 130         if (Scheduler_HasDelayElapsed(10000, &DelayCounter))
 131         {
 132                 printf_P(PSTR("Current temperature: %d Degrees Celcius\r\n\r\n"),
 133                          (int8_t)Temperature_GetTemperature());
 134
 135                 /* Reset the delay counter, ready to count another 10000 tick interval */
 136                 Scheduler_ResetDelay(&DelayCounter);
 137         }
 138 }
 139
 140 /** Task responsible for checking the HWB button position, and start-stopping other tasks and the USB
 141  *  interface in response to user joystick movements.
 142  */
 143 TASK(TestApp_CheckHWB)
 144 {
 145         static SchedulerDelayCounter_t DelayCounter = 0;
 146         static bool                    IsPressed;
 147         static bool                    BlockingJoystickTask;
 148
 149         /* Check if HWB pressed (start USB) */
 150         if (HWB_GetStatus() == true)
 151         {
 152                 /* Debounce - check 100 ticks later to see if button is still being pressed */
 153                 if ((IsPressed == false) && (Scheduler_HasDelayElapsed(100, &DelayCounter)))
 154                 {
 155                         /* Set flag, indicating that current pressed state has been handled */
 156                         IsPressed = true;
 157
 158                         /* First start of the USB interface permanently blocks the joystick task */
 159                         if (BlockingJoystickTask == false)
 160                         {
 161                                 Scheduler_SetTaskMode(TestApp_CheckJoystick, TASK_STOP);
 162                                 BlockingJoystickTask = true;
 163                         }
 164
 165                         /* Toggle USB interface */
 166                         if (USB_IsInitialized == true)
 167                         {
 168                                 USB_ShutDown();
 169
 170                                 LEDs_SetAllLEDs(LEDS_LED1);
 171                                 puts_P(PSTR(ESC_BG_WHITE "USB Power Off.\r\n"));
 172
 173                                 Scheduler_SetTaskMode(TestApp_CheckTemp, TASK_RUN);
 174                         }
 175                         else
 176                         {
 177                                 Scheduler_SetTaskMode(TestApp_CheckTemp, TASK_STOP);
 178
 179                                 LEDs_SetAllLEDs(LEDS_LED2 | LEDS_LED3);
 180                                 puts_P(PSTR(ESC_BG_YELLOW "USB Power On.\r\n"));
 181
 182                                 USB_Init(USB_MODE_UID, USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL);
 183                         }
 184                 }
 185         }
 186     else
 187     {
 188                 /* HWB not pressed - reset debounce interval counter and press handled flag */
 189                 Scheduler_ResetDelay(&DelayCounter);
 190                 IsPressed = false;
 191         }
 192 }