diff options
Diffstat (limited to 'LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c')
| -rw-r--r-- | LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c new file mode 100644 index 0000000000..4eea57a0bf --- /dev/null +++ b/LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c @@ -0,0 +1,204 @@ +/* + 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 |