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