Projects/AVRISP-MKII/AVRISP-MKII.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2014.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2014  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 disclaims 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         GlobalInterruptEnable();
  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 #if (ARCH == ARCH_AVR8)
  67         /* Disable watchdog if enabled by bootloader/fuses */
  68         MCUSR &= ~(1 << WDRF);
  69         wdt_disable();
  70
  71         /* Disable clock division */
  72         clock_prescale_set(clock_div_1);
  73 #endif
  74
  75         /* Hardware Initialization */
  76         LEDs_Init();
  77         #if defined(RESET_TOGGLES_LIBUSB_COMPAT)
  78         UpdateCurrentCompatibilityMode();
  79         #endif
  80
  81         /* USB Stack Initialization */
  82         USB_Init();
  83 }
  84
  85 /** Event handler for the library USB Connection event. */
  86 void EVENT_USB_Device_Connect(void)
  87 {
  88         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  89 }
  90
  91 /** Event handler for the library USB Disconnection event. */
  92 void EVENT_USB_Device_Disconnect(void)
  93 {
  94         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  95 }
  96
  97 /** Event handler for the library USB Configuration Changed event. */
  98 void EVENT_USB_Device_ConfigurationChanged(void)
  99 {
 100         bool ConfigSuccess = true;
 101
 102         /* Setup AVRISP Data OUT endpoint */
 103         ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
 104
 105         /* Setup AVRISP Data IN endpoint if it is using a physically different endpoint */
 106         if ((AVRISP_DATA_IN_EPADDR & ENDPOINT_EPNUM_MASK) != (AVRISP_DATA_OUT_EPADDR & ENDPOINT_EPNUM_MASK))
 107           ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
 108
 109         /* Indicate endpoint configuration success or failure */
 110         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 111 }
 112
 113 /** Processes incoming V2 Protocol commands from the host, returning a response when required. */
 114 void AVRISP_Task(void)
 115 {
 116         /* Device must be connected and configured for the task to run */
 117         if (USB_DeviceState != DEVICE_STATE_Configured)
 118           return;
 119
 120         V2Params_UpdateParamValues();
 121
 122         Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPADDR);
 123
 124         /* Check to see if a V2 Protocol command has been received */
 125         if (Endpoint_IsOUTReceived())
 126         {
 127                 LEDs_SetAllLEDs(LEDMASK_BUSY);
 128
 129                 /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
 130                 V2Protocol_ProcessCommand();
 131
 132                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 133         }
 134 }
 135
 136 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
 137  *  documentation) by the application code so that the address and size of a requested descriptor can be given
 138  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
 139  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
 140  *  USB host.
 141  *
 142  *  \param[in]  wValue                 Descriptor type and index to retrieve
 143  *  \param[in]  wIndex                 Sub-index to retrieve (such as a localized string language)
 144  *  \param[out] DescriptorAddress      Address of the retrieved descriptor
 145  *  \param[out] DescriptorMemorySpace  Memory space that the descriptor is stored in
 146  *
 147  *  \return Length of the retrieved descriptor in bytes, or NO_DESCRIPTOR if the descriptor was not found
 148  */
 149 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 150                                     const uint8_t wIndex,
 151                                     const void** const DescriptorAddress,
 152                                     uint8_t* DescriptorMemorySpace)
 153 {
 154         return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress, DescriptorMemorySpace);
 155 }
 156