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_CAN_BE_BOTH)
  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 the 8-bit AVR-GCC toolchain */
  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         uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
  70         GlobalInterruptDisable();
  71
  72         NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
  73         USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
  74         USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
  75         NVM.CMD  = 0;
  76
  77         /* Ugly workaround to ensure an aligned table, since __BIGGEST_ALIGNMENT__ == 1 for the 8-bit AVR-GCC toolchain */
  78         USB.EPPTR = ((intptr_t)&USB_EndpointTable[1] & ~(1 << 0));
  79         USB.CTRLA = (USB_STFRNUM_bm | ((ENDPOINT_TOTAL_ENDPOINTS - 1) << USB_MAXEP_gp));
  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         #if defined(USB_CAN_BE_BOTH)
  91         USB_CurrentMode = Mode;
  92         #endif
  93
  94         USB_IsInitialized = true;
  95
  96         USB_ResetInterface();
  97 }
  98
  99 void USB_Disable(void)
 100 {
 101         USB_INT_DisableAllInterrupts();
 102         USB_INT_ClearAllInterrupts();
 103
 104         USB_Detach();
 105         USB_Controller_Disable();
 106
 107         USB_IsInitialized = false;
 108 }
 109
 110 void USB_ResetInterface(void)
 111 {
 112         #if defined(USB_DEVICE_OPT_FULLSPEED)
 113         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 114           CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 115         else
 116           CLK.USBCTRL = (((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp);
 117         #else
 118         CLK.USBCTRL = (((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp);
 119         #endif
 120
 121         if (USB_Options & USB_OPT_PLLCLKSRC)
 122           CLK.USBCTRL |= (CLK_USBSRC_PLL_gc   | CLK_USBSEN_bm);
 123         else
 124           CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
 125
 126         USB_Device_SetDeviceAddress(0);
 127
 128         USB_INT_DisableAllInterrupts();
 129         USB_INT_ClearAllInterrupts();
 130
 131         USB_Controller_Reset();
 132         USB_Init_Device();
 133 }
 134
 135 #if defined(USB_CAN_BE_DEVICE)
 136 static void USB_Init_Device(void)
 137 {
 138         USB_DeviceState                 = DEVICE_STATE_Unattached;
 139         USB_Device_ConfigurationNumber  = 0;
 140
 141         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 142         USB_Device_RemoteWakeupEnabled  = false;
 143         #endif
 144
 145         #if !defined(NO_DEVICE_SELF_POWER)
 146         USB_Device_CurrentlySelfPowered = false;
 147         #endif
 148
 149         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 150         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 151
 152         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 153             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 154         uint8_t DescriptorAddressSpace;
 155
 156         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 157         {
 158                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 159                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 160                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 161                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 162                 else
 163                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 164         }
 165         #else
 166         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 167         {
 168                 #if defined(USE_RAM_DESCRIPTORS)
 169                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 170                 #elif defined(USE_EEPROM_DESCRIPTORS)
 171                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 172                 #else
 173                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 174                 #endif
 175         }
 176         #endif
 177         #endif
 178
 179         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 180           USB_Device_SetLowSpeed();
 181         else
 182           USB_Device_SetFullSpeed();
 183
 184         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 185                                                            USB_Device_ControlEndpointSize, 1);
 186
 187         USB_INT_Enable(USB_INT_BUSEVENTI);
 188
 189         USB_Attach();
 190 }
 191 #endif
 192
 193 #endif