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 // TODO: Add in software SPI for lower programming speeds below 125KHz
  38 // TODO: Add in VTARGET detection
  39 // TODO: Add reversed target connector checks
  40
  41 #include "AVRISP.h"
  42
  43 /** Main program entry point. This routine contains the overall program flow, including initial
  44  *  setup of all components and the main program loop.
  45  */
  46 int main(void)
  47 {
  48         SetupHardware();
  49
  50         V2Params_LoadEEPROMParamValues();
  51
  52         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  53
  54         for (;;)
  55         {
  56                 Process_AVRISP_Commands();
  57
  58                 USB_USBTask();
  59         }
  60 }
  61
  62 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  63 void SetupHardware(void)
  64 {
  65         /* Disable watchdog if enabled by bootloader/fuses */
  66         MCUSR &= ~(1 << WDRF);
  67         wdt_disable();
  68
  69         /* Disable clock division */
  70         clock_prescale_set(clock_div_1);
  71
  72         /* Hardware Initialization */
  73         LEDs_Init();
  74         USB_Init();
  75
  76         /* Millisecond timer initialization for timeout checking */
  77         OCR0A  = ((F_CPU / 64) / 1000);
  78         TCCR0A = (1 << WGM01);
  79         TCCR0B = ((1 << CS01) | (1 << CS00));
  80 }
  81
  82 /** Event handler for the library USB Connection event. */
  83 void EVENT_USB_Device_Connect(void)
  84 {
  85         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  86 }
  87
  88 /** Event handler for the library USB Disconnection event. */
  89 void EVENT_USB_Device_Disconnect(void)
  90 {
  91         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  92 }
  93
  94 /** Event handler for the library USB Configuration Changed event. */
  95 void EVENT_USB_Device_ConfigurationChanged(void)
  96 {
  97         /* Indicate USB connected and ready */
  98         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  99
 100         /* Setup AVRISP data Endpoints */
 101         if (!(Endpoint_ConfigureEndpoint(AVRISP_DATA_EPNUM, EP_TYPE_BULK,
 102                                              ENDPOINT_DIR_OUT, AVRISP_DATA_EPSIZE,
 103                                          ENDPOINT_BANK_SINGLE)))
 104         {
 105                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 106         }
 107 }
 108
 109 /** Processes incomming V2 Protocol commands from the host, returning a response when required. */
 110 void Process_AVRISP_Commands(void)
 111 {
 112         /* Device must be connected and configured for the task to run */
 113         if (USB_DeviceState != DEVICE_STATE_Configured)
 114           return;
 115
 116         Endpoint_SelectEndpoint(AVRISP_DATA_EPNUM);
 117
 118         /* Check to see if a V2 Protocol command has been received - if not, abort */
 119         if (!(Endpoint_IsOUTReceived()))
 120           return;
 121
 122         /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
 123         V2Protocol_ProcessCommand();
 124 }
 125