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_EndpointTable_t USB_EndpointTable ATTR_ALIGNED(4);
  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         USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
  73         NVM.CMD  = 0;
  74
  75         USB.EPPTR = (intptr_t)&USB_EndpointTable;
  76         USB.CTRLA = (USB_STFRNUM_bm | USB_MAXEP_gm);
  77
  78         if ((USB_Options & USB_OPT_BUSEVENT_PRIHIGH) == USB_OPT_BUSEVENT_PRIHIGH)
  79           USB.INTCTRLA = (3 << USB_INTLVL_gp);
  80         else if ((USB_Options & USB_OPT_BUSEVENT_PRIMED) == USB_OPT_BUSEVENT_PRIMED)
  81           USB.INTCTRLA = (2 << USB_INTLVL_gp);
  82         else
  83           USB.INTCTRLA = (1 << USB_INTLVL_gp);
  84
  85         SetGlobalInterruptMask(CurrentGlobalInt);
  86
  87         USB_ResetInterface();
  88 }
  89
  90 void USB_Disable(void)
  91 {
  92         USB_INT_DisableAllInterrupts();
  93         USB_INT_ClearAllInterrupts();
  94
  95         USB_Detach();
  96         USB_Controller_Disable();
  97
  98         USB_IsInitialized = false;
  99 }
 100
 101 void USB_ResetInterface(void)
 102 {
 103         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 104           CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 105         else
 106           CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
 107
 108         if (USB_Options & USB_OPT_PLLCLKSRC)
 109           CLK.USBCTRL |= (CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 110         else
 111           CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
 112
 113         USB_Device_SetDeviceAddress(0);
 114
 115         USB_INT_DisableAllInterrupts();
 116         USB_INT_ClearAllInterrupts();
 117
 118         USB_Controller_Reset();
 119         USB_Init_Device();
 120 }
 121
 122 #if defined(USB_CAN_BE_DEVICE)
 123 static void USB_Init_Device(void)
 124 {
 125         USB_DeviceState                 = DEVICE_STATE_Unattached;
 126         USB_Device_ConfigurationNumber  = 0;
 127
 128         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 129         USB_Device_RemoteWakeupEnabled  = false;
 130         #endif
 131
 132         #if !defined(NO_DEVICE_SELF_POWER)
 133         USB_Device_CurrentlySelfPowered = false;
 134         #endif
 135
 136         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 137         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 138
 139         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 140             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 141         uint8_t DescriptorAddressSpace;
 142
 143         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 144         {
 145                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 146                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 147                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 148                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 149                 else
 150                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 151         }
 152         #else
 153         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 154         {
 155                 #if defined(USE_RAM_DESCRIPTORS)
 156                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 157                 #elif defined(USE_EEPROM_DESCRIPTORS)
 158                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 159                 #else
 160                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 161                 #endif
 162         }
 163         #endif
 164         #endif
 165
 166         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 167           USB_Device_SetLowSpeed();
 168         else
 169           USB_Device_SetFullSpeed();
 170
 171         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 172                                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 173                                                            ENDPOINT_BANK_SINGLE);
 174
 175         USB_INT_Enable(USB_INT_BUSEVENTI);
 176
 177         USB_Attach();
 178 }
 179 #endif
 180