LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.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 #define  __INCLUDE_FROM_USB_DRIVER
  32 #define  __INCLUDE_FROM_USB_CONTROLLER_C
  33 #include "../USBController.h"
  34
  35 #if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
  36 volatile uint8_t USB_CurrentMode = USB_MODE_None;
  37 #endif
  38
  39 #if !defined(USE_STATIC_OPTIONS)
  40 volatile uint8_t USB_Options;
  41 #endif
  42
  43 USB_EP_TABLE_t USB_EndpointTable ATTR_ALIGNED(2);
  44
  45 void USB_Init(
  46                #if defined(USB_CAN_BE_BOTH)
  47                const uint8_t Mode
  48                #endif
  49
  50                #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
  51                ,
  52                #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
  53                void
  54                #endif
  55
  56                #if !defined(USE_STATIC_OPTIONS)
  57                const uint8_t Options
  58                #endif
  59                )
  60 {
  61         #if !defined(USE_STATIC_OPTIONS)
  62         USB_Options = Options;
  63         #endif
  64
  65         USB_IsInitialized = true;
  66
  67         uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
  68         GlobalInterruptDisable();
  69
  70         NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
  71         USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
  72         NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
  73         USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
  74
  75         if ((USB_Options & USB_OPT_BUSEVENT_PRIHIGH) == USB_OPT_BUSEVENT_PRIHIGH)
  76           USB.INTCTRLA = (3 << USB_INTLVL_gp);
  77         else if ((USB_Options & USB_OPT_BUSEVENT_PRIMED) == USB_OPT_BUSEVENT_PRIMED)
  78           USB.INTCTRLA = (2 << USB_INTLVL_gp);
  79         else
  80           USB.INTCTRLA = (1 << USB_INTLVL_gp);
  81
  82         SetGlobalInterruptMask(CurrentGlobalInt);
  83
  84         USB_ResetInterface();
  85 }
  86
  87 void USB_Disable(void)
  88 {
  89         USB_INT_DisableAllInterrupts();
  90         USB_INT_ClearAllInterrupts();
  91
  92         USB_Detach();
  93         USB_Controller_Disable();
  94
  95         USB_IsInitialized = false;
  96 }
  97
  98 void USB_ResetInterface(void)
  99 {
 100         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 101           CLK.USBCTRL = ((((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 102         else
 103           CLK.USBCTRL = ((((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 104
 105         USB_INT_DisableAllInterrupts();
 106         USB_INT_ClearAllInterrupts();
 107
 108         USB_Controller_Reset();
 109         USB_Init_Device();
 110 }
 111
 112 #if defined(USB_CAN_BE_DEVICE)
 113 static void USB_Init_Device(void)
 114 {
 115         USB_DeviceState                 = DEVICE_STATE_Unattached;
 116         USB_Device_ConfigurationNumber  = 0;
 117
 118         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 119         USB_Device_RemoteWakeupEnabled  = false;
 120         #endif
 121
 122         #if !defined(NO_DEVICE_SELF_POWER)
 123         USB_Device_CurrentlySelfPowered = false;
 124         #endif
 125
 126         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 127         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 128
 129         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 130             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 131         uint8_t DescriptorAddressSpace;
 132
 133         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 134         {
 135                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 136                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 137                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 138                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 139                 else
 140                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 141         }
 142         #else
 143         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 144         {
 145                 #if defined(USE_RAM_DESCRIPTORS)
 146                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 147                 #elif defined(USE_EEPROM_DESCRIPTORS)
 148                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 149                 #else
 150                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 151                 #endif
 152         }
 153         #endif
 154         #endif
 155
 156         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 157           USB_Device_SetLowSpeed();
 158         else
 159           USB_Device_SetFullSpeed();
 160
 161         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 162                                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 163                                                            ENDPOINT_BANK_SINGLE);
 164
 165         USB_INT_Enable(USB_INT_BUSEVENTI);
 166
 167         USB_Attach();
 168 }
 169 #endif