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