--- /dev/null
+/*
+ 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
projects / qmk_firmware.git / blobdiff