LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.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 #include "../../../../Common/Common.h"
  32 #if (ARCH == ARCH_XMEGA)
  33
  34 #define  __INCLUDE_FROM_USB_DRIVER
  35 #define  __INCLUDE_FROM_USB_CONTROLLER_C
  36 #include "../USBController.h"
  37
  38 #if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
  39 volatile uint8_t USB_CurrentMode = USB_MODE_None;
  40 #endif
  41
  42 #if !defined(USE_STATIC_OPTIONS)
  43 volatile uint8_t USB_Options;
  44 #endif
  45
  46 /* Ugly workaround to ensure an aligned table, since __BIGGEST_ALIGNMENT__ == 1 for 8-bit AVR-GCC */
  47 uint8_t USB_EndpointTable[sizeof(USB_EndpointTable_t) + 1];
  48
  49 void USB_Init(
  50                #if defined(USB_CAN_BE_BOTH)
  51                const uint8_t Mode
  52                #endif
  53
  54                #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
  55                ,
  56                #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
  57                void
  58                #endif
  59
  60                #if !defined(USE_STATIC_OPTIONS)
  61                const uint8_t Options
  62                #endif
  63                )
  64 {
  65         #if !defined(USE_STATIC_OPTIONS)
  66         USB_Options = Options;
  67         #endif
  68
  69         USB_IsInitialized = true;
  70
  71         uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
  72         GlobalInterruptDisable();
  73
  74         NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
  75         USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
  76         USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
  77         NVM.CMD  = 0;
  78
  79         /* Ugly workaround to ensure an aligned table, since __BIGGEST_ALIGNMENT__ == 1 for 8-bit AVR-GCC */
  80         USB.EPPTR = ((intptr_t)&USB_EndpointTable[1] & ~(1 << 0));
  81         USB.CTRLA = (USB_STFRNUM_bm | ((ENDPOINT_TOTAL_ENDPOINTS - 1) << USB_MAXEP_gp));
  82
  83         if ((USB_Options & USB_OPT_BUSEVENT_PRIHIGH) == USB_OPT_BUSEVENT_PRIHIGH)
  84           USB.INTCTRLA = (3 << USB_INTLVL_gp);
  85         else if ((USB_Options & USB_OPT_BUSEVENT_PRIMED) == USB_OPT_BUSEVENT_PRIMED)
  86           USB.INTCTRLA = (2 << USB_INTLVL_gp);
  87         else
  88           USB.INTCTRLA = (1 << USB_INTLVL_gp);
  89
  90         SetGlobalInterruptMask(CurrentGlobalInt);
  91
  92         USB_ResetInterface();
  93 }
  94
  95 void USB_Disable(void)
  96 {
  97         USB_INT_DisableAllInterrupts();
  98         USB_INT_ClearAllInterrupts();
  99
 100         USB_Detach();
 101         USB_Controller_Disable();
 102
 103         USB_IsInitialized = false;
 104 }
 105
 106 void USB_ResetInterface(void)
 107 {
 108         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 109           CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 110         else
 111           CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
 112
 113         if (USB_Options & USB_OPT_PLLCLKSRC)
 114           CLK.USBCTRL |= (CLK_USBSRC_PLL_gc   | CLK_USBSEN_bm);
 115         else
 116           CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
 117
 118         USB_Device_SetDeviceAddress(0);
 119
 120         USB_INT_DisableAllInterrupts();
 121         USB_INT_ClearAllInterrupts();
 122
 123         USB_Controller_Reset();
 124         USB_Init_Device();
 125 }
 126
 127 #if defined(USB_CAN_BE_DEVICE)
 128 static void USB_Init_Device(void)
 129 {
 130         USB_DeviceState                 = DEVICE_STATE_Unattached;
 131         USB_Device_ConfigurationNumber  = 0;
 132
 133         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 134         USB_Device_RemoteWakeupEnabled  = false;
 135         #endif
 136
 137         #if !defined(NO_DEVICE_SELF_POWER)
 138         USB_Device_CurrentlySelfPowered = false;
 139         #endif
 140
 141         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 142         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 143
 144         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 145             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 146         uint8_t DescriptorAddressSpace;
 147
 148         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 149         {
 150                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 151                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 152                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 153                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 154                 else
 155                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 156         }
 157         #else
 158         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 159         {
 160                 #if defined(USE_RAM_DESCRIPTORS)
 161                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 162                 #elif defined(USE_EEPROM_DESCRIPTORS)
 163                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 164                 #else
 165                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 166                 #endif
 167         }
 168         #endif
 169         #endif
 170
 171         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 172           USB_Device_SetLowSpeed();
 173         else
 174           USB_Device_SetFullSpeed();
 175
 176         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 177                                                            USB_Device_ControlEndpointSize, 1);
 178
 179         USB_INT_Enable(USB_INT_BUSEVENTI);
 180
 181         USB_Attach();
 182 }
 183 #endif
 184
 185 #endif