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 defined(USB_DEVICE_OPT_FULLSPEED)
 109         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 110           CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 111         else
 112           CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
 113         #else
 114         CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 115         #endif
 116
 117         if (USB_Options & USB_OPT_PLLCLKSRC)
 118           CLK.USBCTRL |= (CLK_USBSRC_PLL_gc   | CLK_USBSEN_bm);
 119         else
 120           CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
 121
 122         USB_Device_SetDeviceAddress(0);
 123
 124         USB_INT_DisableAllInterrupts();
 125         USB_INT_ClearAllInterrupts();
 126
 127         USB_Controller_Reset();
 128         USB_Init_Device();
 129 }
 130
 131 #if defined(USB_CAN_BE_DEVICE)
 132 static void USB_Init_Device(void)
 133 {
 134         USB_DeviceState                 = DEVICE_STATE_Unattached;
 135         USB_Device_ConfigurationNumber  = 0;
 136
 137         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 138         USB_Device_RemoteWakeupEnabled  = false;
 139         #endif
 140
 141         #if !defined(NO_DEVICE_SELF_POWER)
 142         USB_Device_CurrentlySelfPowered = false;
 143         #endif
 144
 145         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 146         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 147
 148         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 149             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 150         uint8_t DescriptorAddressSpace;
 151
 152         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 153         {
 154                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 155                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 156                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 157                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 158                 else
 159                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 160         }
 161         #else
 162         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 163         {
 164                 #if defined(USE_RAM_DESCRIPTORS)
 165                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 166                 #elif defined(USE_EEPROM_DESCRIPTORS)
 167                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 168                 #else
 169                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 170                 #endif
 171         }
 172         #endif
 173         #endif
 174
 175         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 176           USB_Device_SetLowSpeed();
 177         else
 178           USB_Device_SetFullSpeed();
 179
 180         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 181                                                            USB_Device_ControlEndpointSize, 1);
 182
 183         USB_INT_Enable(USB_INT_BUSEVENTI);
 184
 185         USB_Attach();
 186 }
 187 #endif
 188
 189 #endif