Projects/AVRISP-MKII/AVRISP-MKII.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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         GlobalInterruptEnable();
  49
  50         for (;;)
  51         {
  52                 #if (BOARD == BOARD_USBTINYMKII)
  53                         /* On the USBTINY-MKII board target, there is a secondary LED which indicates the current selected
  54                            power mode - either VBUS, or sourced from the VTARGET pin of the programming connectors */
  55                         LEDs_ChangeLEDs(LEDS_LED3, (PIND & (1 << 0)) ? 0 : LEDS_LED3);
  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         #elif (ARCH == ARCH_UC3)
  74                 /* Select slow startup, external high frequency crystal attached to OSC0 */
  75                 AVR32_PM.OSCCTRL0.mode    = 7;
  76                 AVR32_PM.OSCCTRL0.startup = 6;
  77                 AVR32_PM.MCCTRL.osc0en    = true;
  78                 while (!(AVR32_PM.POSCSR.osc0rdy));
  79
  80                 /* Switch CPU core to use OSC0 as the system clock */
  81                 AVR32_PM.MCCTRL.mcsel     = 1;
  82
  83                 /* Start PLL1 to feed into the USB generic clock module */
  84                 AVR32_PM.PLL[1].pllmul    = (F_USB / F_CPU) ? (((F_USB / F_CPU) - 1) / 2) : 0;
  85                 AVR32_PM.PLL[1].plldiv    = 0;
  86                 AVR32_PM.PLL[1].pllosc    = 0;
  87                 AVR32_PM.PLL[1].pllen     = true;
  88                 while (!(AVR32_PM.POSCSR.lock1));
  89
  90                 /* Configure interrupt management peripheral */
  91 //              INTC_Init();
  92                 INTC_RegisterGroupHandler(AVR32_USBB_IRQ, AVR32_INTC_INT0, USB_GEN_vect);
  93         #endif
  94
  95         /* Hardware Initialization */
  96         LEDs_Init();
  97         USB_Init();
  98 }
  99
 100 /** Event handler for the library USB Connection event. */
 101 void EVENT_USB_Device_Connect(void)
 102 {
 103         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 104 }
 105
 106 /** Event handler for the library USB Disconnection event. */
 107 void EVENT_USB_Device_Disconnect(void)
 108 {
 109         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 110 }
 111
 112 /** Event handler for the library USB Configuration Changed event. */
 113 void EVENT_USB_Device_ConfigurationChanged(void)
 114 {
 115         bool ConfigSuccess = true;
 116
 117         /* Setup AVRISP Data Endpoint(s) */
 118         ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
 119                                                     AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);
 120
 121         #if defined(LIBUSB_DRIVER_COMPAT)
 122         ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
 123                                                     AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);
 124         #endif
 125
 126         /* Indicate endpoint configuration success or failure */
 127         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 128 }
 129
 130 /** Processes incoming V2 Protocol commands from the host, returning a response when required. */
 131 void AVRISP_Task(void)
 132 {
 133         /* Device must be connected and configured for the task to run */
 134         if (USB_DeviceState != DEVICE_STATE_Configured)
 135           return;
 136
 137         V2Params_UpdateParamValues();
 138
 139         Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);
 140
 141         /* Check to see if a V2 Protocol command has been received */
 142         if (Endpoint_IsOUTReceived())
 143         {
 144                 LEDs_SetAllLEDs(LEDMASK_BUSY);
 145
 146                 /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
 147                 V2Protocol_ProcessCommand();
 148
 149                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 150         }
 151 }
 152