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 USB_EndpointTable_t USB_EndpointTable ATTR_ALIGNED(4);
  47
  48 void USB_Init(
  49                #if defined(USB_CAN_BE_BOTH)
  50                const uint8_t Mode
  51                #endif
  52
  53                #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
  54                ,
  55                #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
  56                void
  57                #endif
  58
  59                #if !defined(USE_STATIC_OPTIONS)
  60                const uint8_t Options
  61                #endif
  62                )
  63 {
  64         #if !defined(USE_STATIC_OPTIONS)
  65         USB_Options = Options;
  66         #endif
  67
  68         USB_IsInitialized = true;
  69
  70         uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
  71         GlobalInterruptDisable();
  72
  73         NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
  74         USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
  75         USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
  76         NVM.CMD  = 0;
  77
  78         USB.EPPTR = (intptr_t)&USB_EndpointTable;
  79         USB.CTRLA = (USB_STFRNUM_bm | USB_MAXEP_gm);
  80
  81         if ((USB_Options & USB_OPT_BUSEVENT_PRIHIGH) == USB_OPT_BUSEVENT_PRIHIGH)
  82           USB.INTCTRLA = (3 << USB_INTLVL_gp);
  83         else if ((USB_Options & USB_OPT_BUSEVENT_PRIMED) == USB_OPT_BUSEVENT_PRIMED)
  84           USB.INTCTRLA = (2 << USB_INTLVL_gp);
  85         else
  86           USB.INTCTRLA = (1 << USB_INTLVL_gp);
  87
  88         SetGlobalInterruptMask(CurrentGlobalInt);
  89
  90         USB_ResetInterface();
  91 }
  92
  93 void USB_Disable(void)
  94 {
  95         USB_INT_DisableAllInterrupts();
  96         USB_INT_ClearAllInterrupts();
  97
  98         USB_Detach();
  99         USB_Controller_Disable();
 100
 101         USB_IsInitialized = false;
 102 }
 103
 104 void USB_ResetInterface(void)
 105 {
 106         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 107           CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 108         else
 109           CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
 110
 111         if (USB_Options & USB_OPT_PLLCLKSRC)
 112           CLK.USBCTRL |= (CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 113         else
 114           CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
 115
 116         USB_Device_SetDeviceAddress(0);
 117
 118         USB_INT_DisableAllInterrupts();
 119         USB_INT_ClearAllInterrupts();
 120
 121         USB_Controller_Reset();
 122         USB_Init_Device();
 123 }
 124
 125 #if defined(USB_CAN_BE_DEVICE)
 126 static void USB_Init_Device(void)
 127 {
 128         USB_DeviceState                 = DEVICE_STATE_Unattached;
 129         USB_Device_ConfigurationNumber  = 0;
 130
 131         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 132         USB_Device_RemoteWakeupEnabled  = false;
 133         #endif
 134
 135         #if !defined(NO_DEVICE_SELF_POWER)
 136         USB_Device_CurrentlySelfPowered = false;
 137         #endif
 138
 139         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 140         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 141
 142         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 143             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 144         uint8_t DescriptorAddressSpace;
 145
 146         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 147         {
 148                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 149                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 150                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 151                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 152                 else
 153                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 154         }
 155         #else
 156         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 157         {
 158                 #if defined(USE_RAM_DESCRIPTORS)
 159                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 160                 #elif defined(USE_EEPROM_DESCRIPTORS)
 161                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 162                 #else
 163                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 164                 #endif
 165         }
 166         #endif
 167         #endif
 168
 169         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 170           USB_Device_SetLowSpeed();
 171         else
 172           USB_Device_SetFullSpeed();
 173
 174         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 175                                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 176                                                            ENDPOINT_BANK_SINGLE);
 177
 178         USB_INT_Enable(USB_INT_BUSEVENTI);
 179
 180         USB_Attach();
 181 }
 182 #endif
 183
 184 #endif