Projects/AVRISP-MKII/AVRISP-MKII.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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-MKII.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         V2Protocol_Init();
  46
  47         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  48         sei();
  49
  50         for (;;)
  51         {
  52                 #if (BOARD == BOARD_USBTINYMKII)
  53                 /* On the USBTINY-MKII target, there is a secondary LED which indicates the current selected power
  54                    mode - either VBUS, or sourced from the VTARGET pin of the programming connectors */
  55                 LEDs_ChangeLEDs(LEDMASK_VBUSPOWER, (PIND & (1 << 0)) ? 0 : LEDMASK_VBUSPOWER);
  56                 #endif
  57
  58                 AVRISP_Task();
  59                 USB_USBTask();
  60         }
  61 }
  62
  63 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  64 void SetupHardware(void)
  65 {
  66         /* Disable watchdog if enabled by bootloader/fuses */
  67         MCUSR &= ~(1 << WDRF);
  68         wdt_disable();
  69
  70         /* Disable clock division */
  71         clock_prescale_set(clock_div_1);
  72
  73         /* Hardware Initialization */
  74         LEDs_Init();
  75         #if defined(RESET_TOGGLES_LIBUSB_COMPAT)
  76         UpdateCurrentCompatibilityMode();
  77         #endif
  78
  79         /* USB Stack Initialization */
  80         USB_Init();
  81 }
  82
  83 /** Event handler for the library USB Connection event. */
  84 void EVENT_USB_Device_Connect(void)
  85 {
  86         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  87 }
  88
  89 /** Event handler for the library USB Disconnection event. */
  90 void EVENT_USB_Device_Disconnect(void)
  91 {
  92         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  93 }
  94
  95 /** Event handler for the library USB Configuration Changed event. */
  96 void EVENT_USB_Device_ConfigurationChanged(void)
  97 {
  98         bool ConfigSuccess = true;
  99
 100         /* Setup AVRISP Data OUT endpoint */
 101         ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
 102
 103         /* Setup AVRISP Data IN endpoint if it is using a physically different endpoint */
 104         if ((AVRISP_DATA_IN_EPADDR & ENDPOINT_EPNUM_MASK) != (AVRISP_DATA_OUT_EPADDR & ENDPOINT_EPNUM_MASK))
 105           ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
 106
 107         /* Indicate endpoint configuration success or failure */
 108         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 109 }
 110
 111 /** Processes incoming V2 Protocol commands from the host, returning a response when required. */
 112 void AVRISP_Task(void)
 113 {
 114         /* Device must be connected and configured for the task to run */
 115         if (USB_DeviceState != DEVICE_STATE_Configured)
 116           return;
 117
 118         V2Params_UpdateParamValues();
 119
 120         Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPADDR);
 121
 122         /* Check to see if a V2 Protocol command has been received */
 123         if (Endpoint_IsOUTReceived())
 124         {
 125                 LEDs_SetAllLEDs(LEDMASK_BUSY);
 126
 127                 /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
 128                 V2Protocol_ProcessCommand();
 129
 130                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 131         }
 132 }
 133
 134 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
 135  *  documentation) by the application code so that the address and size of a requested descriptor can be given
 136  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
 137  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
 138  *  USB host.
 139  *
 140  *  \param[in]  wValue                 Descriptor type and index to retrieve
 141  *  \param[in]  wIndex                 Sub-index to retrieve (such as a localized string language)
 142  *  \param[out] DescriptorAddress      Address of the retrieved descriptor
 143  *  \param[out] DescriptorMemorySpace  Memory space that the descriptor is stored in
 144  *
 145  *  \return Length of the retrieved descriptor in bytes, or NO_DESCRIPTOR if the descriptor was not found
 146  */
 147 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 148                                     const uint8_t wIndex,
 149                                     const void** const DescriptorAddress,
 150                                     uint8_t* DescriptorMemorySpace)
 151 {
 152         return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress, DescriptorMemorySpace);
 153 }
 154