Projects/AVRISP/AVRISP.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 AVRISP project. This file contains the main tasks of
  34  *  the project and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "AVRISP.h"
  38
  39 /** Main program entry point. This routine contains the overall program flow, including initial
  40  *  setup of all components and the main program loop.
  41  */
  42 int main(void)
  43 {
  44         SetupHardware();
  45
  46         V2Params_LoadNonVolatileParamValues();
  47
  48         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  49
  50         for (;;)
  51         {
  52                 Process_AVRISP_Commands();
  53
  54                 V2Params_UpdateParamValues();
  55
  56                 USB_USBTask();
  57         }
  58 }
  59
  60 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  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         LEDs_Init();
  72         USB_Init();
  73
  74         #if defined(ADC)
  75         /* Initialize the ADC converter for VTARGET level detection on supported AVR models */
  76         ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_128);
  77         ADC_SetupChannel(VTARGET_ADC_CHANNEL);
  78         ADC_StartReading(VTARGET_ADC_CHANNEL | ADC_RIGHT_ADJUSTED | ADC_REFERENCE_AVCC);
  79         #endif
  80
  81         /* Millisecond timer initialization for timeouts and delays */
  82         OCR0A  = ((F_CPU / 64) / 1000);
  83         TCCR0A = (1 << WGM01);
  84         TCCR0B = ((1 << CS01) | (1 << CS00));
  85 }
  86
  87 /** Event handler for the library USB Connection event. */
  88 void EVENT_USB_Device_Connect(void)
  89 {
  90         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  91 }
  92
  93 /** Event handler for the library USB Disconnection event. */
  94 void EVENT_USB_Device_Disconnect(void)
  95 {
  96         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  97 }
  98
  99 /** Event handler for the library USB Configuration Changed event. */
 100 void EVENT_USB_Device_ConfigurationChanged(void)
 101 {
 102         /* Indicate USB connected and ready */
 103         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 104
 105         /* Setup AVRISP data Endpoints */
 106         if (!(Endpoint_ConfigureEndpoint(AVRISP_DATA_EPNUM, EP_TYPE_BULK,
 107                                              ENDPOINT_DIR_OUT, AVRISP_DATA_EPSIZE,
 108                                          ENDPOINT_BANK_SINGLE)))
 109         {
 110                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 111         }
 112 }
 113
 114 /** Processes incoming V2 Protocol commands from the host, returning a response when required. */
 115 void Process_AVRISP_Commands(void)
 116 {
 117         /* Device must be connected and configured for the task to run */
 118         if (USB_DeviceState != DEVICE_STATE_Configured)
 119           return;
 120
 121         Endpoint_SelectEndpoint(AVRISP_DATA_EPNUM);
 122
 123         /* Check to see if a V2 Protocol command has been received */
 124         if (Endpoint_IsOUTReceived())
 125         {
 126                 /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
 127                 V2Protocol_ProcessCommand();
 128         }
 129 }
 130