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/*
LUFA Library
Copyright (C) Dean Camera, 2017.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#include "../../../../Common/Common.h"
#if (ARCH == ARCH_XMEGA)
#define __INCLUDE_FROM_USB_DRIVER
#define __INCLUDE_FROM_USB_CONTROLLER_C
#include "../USBController.h"
#if defined(USB_CAN_BE_BOTH)
volatile uint8_t USB_CurrentMode = USB_MODE_None;
#endif
#if !defined(USE_STATIC_OPTIONS)
volatile uint8_t USB_Options;
#endif
/* Ugly workaround to ensure an aligned table, since __BIGGEST_ALIGNMENT__ == 1 for the 8-bit AVR-GCC toolchain */
uint8_t USB_EndpointTable[sizeof(USB_EndpointTable_t) + 1];
void USB_Init(
#if defined(USB_CAN_BE_BOTH)
const uint8_t Mode
#endif
#if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
,
#elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
void
#endif
#if !defined(USE_STATIC_OPTIONS)
const uint8_t Options
#endif
)
{
#if !defined(USE_STATIC_OPTIONS)
USB_Options = Options;
#endif
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
NVM.CMD = NVM_CMD_READ_CALIB_ROW_gc;
USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
NVM.CMD = NVM_CMD_NO_OPERATION_gc;
/* Ugly workaround to ensure an aligned table, since __BIGGEST_ALIGNMENT__ == 1 for the 8-bit AVR-GCC toolchain */
USB.EPPTR = ((intptr_t)&USB_EndpointTable[1] & ~(1 << 0));
USB.CTRLA = (USB_STFRNUM_bm | ((ENDPOINT_TOTAL_ENDPOINTS - 1) << USB_MAXEP_gp));
if ((USB_Options & USB_OPT_BUSEVENT_PRIHIGH) == USB_OPT_BUSEVENT_PRIHIGH)
USB.INTCTRLA = (3 << USB_INTLVL_gp);
else if ((USB_Options & USB_OPT_BUSEVENT_PRIMED) == USB_OPT_BUSEVENT_PRIMED)
USB.INTCTRLA = (2 << USB_INTLVL_gp);
else
USB.INTCTRLA = (1 << USB_INTLVL_gp);
SetGlobalInterruptMask(CurrentGlobalInt);
#if defined(USB_CAN_BE_BOTH)
USB_CurrentMode = Mode;
#endif
USB_IsInitialized = true;
USB_ResetInterface();
}
void USB_Disable(void)
{
USB_INT_DisableAllInterrupts();
USB_INT_ClearAllInterrupts();
USB_Detach();
USB_Controller_Disable();
USB_IsInitialized = false;
}
void USB_ResetInterface(void)
{
uint8_t PrescalerNeeded;
#if defined(USB_DEVICE_OPT_FULLSPEED)
if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
PrescalerNeeded = F_USB / 6000000;
else
PrescalerNeeded = F_USB / 48000000;
#else
PrescalerNeeded = F_USB / 6000000;
#endif
uint8_t DividerIndex = 0;
while (PrescalerNeeded > 0)
{
DividerIndex++;
PrescalerNeeded >>= 1;
}
CLK.USBCTRL = (DividerIndex - 1) << CLK_USBPSDIV_gp;
if (USB_Options & USB_OPT_PLLCLKSRC)
CLK.USBCTRL |= (CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
else
CLK.USBCTRL |= (CLK_USBSRC_RC32M_gc | CLK_USBSEN_bm);
USB_Device_SetDeviceAddress(0);
USB_INT_DisableAllInterrupts();
USB_INT_ClearAllInterrupts();
USB_Controller_Reset();
USB_Init_Device();
}
#if defined(USB_CAN_BE_DEVICE)
static void USB_Init_Device(void)
{
USB_DeviceState = DEVICE_STATE_Unattached;
USB_Device_ConfigurationNumber = 0;
#if !defined(NO_DEVICE_REMOTE_WAKEUP)
USB_Device_RemoteWakeupEnabled = false;
#endif
#if !defined(NO_DEVICE_SELF_POWER)
USB_Device_CurrentlySelfPowered = false;
#endif
#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
USB_Descriptor_Device_t* DeviceDescriptorPtr;
#if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
!(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
uint8_t DescriptorAddressSpace;
if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
{
if (DescriptorAddressSpace == MEMSPACE_FLASH)
USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
else
USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
}
#else
if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
{
#if defined(USE_RAM_DESCRIPTORS)
USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
#elif defined(USE_EEPROM_DESCRIPTORS)
USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
#else
USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
#endif
}
#endif
#endif
if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
USB_Device_SetLowSpeed();
else
USB_Device_SetFullSpeed();
Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
USB_Device_ControlEndpointSize, 1);
USB_INT_Enable(USB_INT_BUSEVENTI);
USB_Attach();
}
#endif
#endif
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