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Clean up USBController.c/.h to more clearly seperate out host and device setup and reset paths.

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Make USBInterrupt.c process all pending USB host mode interrupts before resetting the bus, so that no interrupts are lost when in UID auto-selection mode.
This commit is contained in:
Dean Camera 2010-09-19 05:58:27 +00:00
parent 01fecac0a7
commit e7e1c21bc5
3 changed files with 115 additions and 139 deletions
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184
LUFA/Drivers/USB/LowLevel/USBController.c
View File

@ -29,6 +29,7 @@
*/ */
#define __INCLUDE_FROM_USB_DRIVER #define __INCLUDE_FROM_USB_DRIVER
#define __INCLUDE_FROM_USB_CONTROLLER_C
#include "USBController.h" #include "USBController.h"
#if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY)) #if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
@ -55,58 +56,35 @@ void USB_Init(
#endif #endif
) )
{ {
#if defined(USB_CAN_BE_BOTH)
USB_CurrentMode = Mode;
#endif
#if !defined(USE_STATIC_OPTIONS) #if !defined(USE_STATIC_OPTIONS)
USB_Options = Options; USB_Options = Options;
#endif #endif
#if defined(USB_CAN_BE_HOST) #if defined(USB_CAN_BE_BOTH)
USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE; if (Mode == USB_MODE_UID)
#endif
#if defined(USB_DEVICE_ONLY) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
UHWCON |= (1 << UIMOD);
#elif defined(USB_HOST_ONLY)
UHWCON &= ~(1 << UIMOD);
#elif defined(USB_CAN_BE_BOTH)
if (Mode == USB_MODE_DEVICE)
{ {
UHWCON |= (1 << UIMOD); UHWCON |= (1 << UIDE);
} USB_INT_Enable(USB_INT_IDTI);
else if (Mode == USB_MODE_HOST) USB_CurrentMode = USB_GetUSBModeFromUID();
{
UHWCON &= ~(1 << UIMOD);
} }
else else
{ {
UHWCON |= (1 << UIDE); USB_CurrentMode = Mode;
} }
#endif #endif
USB_ResetInterface();
#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
USB_OTGPAD_On();
#endif
USB_IsInitialized = true; USB_IsInitialized = true;
USB_ResetInterface();
} }
void USB_ShutDown(void) void USB_ShutDown(void)
{ {
USB_ResetInterface();
USB_Detach();
USB_Controller_Disable();
USB_INT_DisableAllInterrupts(); USB_INT_DisableAllInterrupts();
USB_INT_ClearAllInterrupts(); USB_INT_ClearAllInterrupts();
#if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR) USB_Detach();
UHWCON &= ~(1 << UIMOD); USB_Controller_Disable();
#endif
if (!(USB_Options & USB_OPT_MANUAL_PLL)) if (!(USB_Options & USB_OPT_MANUAL_PLL))
USB_PLL_Off(); USB_PLL_Off();
@ -118,37 +96,25 @@ void USB_ShutDown(void)
#endif #endif
#if defined(USB_CAN_BE_BOTH) #if defined(USB_CAN_BE_BOTH)
UHWCON &= ~(1 << UIDE); USB_CurrentMode = USB_MODE_NONE;
#endif #endif
USB_IsInitialized = false; USB_IsInitialized = false;
#if defined(USB_CAN_BE_BOTH)
USB_CurrentMode = USB_MODE_NONE;
#endif
} }
void USB_ResetInterface(void) void USB_ResetInterface(void)
{ {
bool UIDModeSelectEnabled = ((UHWCON & (1 << UIDE)) != 0);
USB_INT_DisableAllInterrupts(); USB_INT_DisableAllInterrupts();
USB_INT_ClearAllInterrupts(); USB_INT_ClearAllInterrupts();
#if defined(USB_CAN_BE_HOST) USB_Controller_Reset();
USB_HostState = HOST_STATE_Unattached;
#endif
#if defined(USB_CAN_BE_DEVICE) if (!(USB_Options & USB_OPT_REG_DISABLED))
USB_DeviceState = DEVICE_STATE_Unattached; USB_REG_On();
USB_ConfigurationNumber = 0; else
USB_REG_Off();
#if !defined(NO_DEVICE_REMOTE_WAKEUP)
USB_RemoteWakeupEnabled = false;
#endif
#if !defined(NO_DEVICE_SELF_POWER)
USB_CurrentlySelfPowered = false;
#endif
#endif
if (!(USB_Options & USB_OPT_MANUAL_PLL)) if (!(USB_Options & USB_OPT_MANUAL_PLL))
{ {
@ -160,37 +126,52 @@ void USB_ResetInterface(void)
while (!(USB_PLL_IsReady())); while (!(USB_PLL_IsReady()));
} }
USB_Controller_Reset();
#if defined(USB_CAN_BE_BOTH)
if (UHWCON & (1 << UIDE))
{
USB_INT_Clear(USB_INT_IDTI);
USB_INT_Enable(USB_INT_IDTI);
USB_CurrentMode = USB_GetUSBModeFromUID();
}
#endif
if (!(USB_Options & USB_OPT_REG_DISABLED))
USB_REG_On();
else
USB_REG_Off();
USB_CLK_Unfreeze(); USB_CLK_Unfreeze();
#if (defined(USB_CAN_BE_DEVICE) && (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))) #if defined(USB_DEVICE_ONLY) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
UHWCON |= (1 << UIMOD);
USB_Init_Device();
#elif defined(USB_HOST_ONLY)
UHWCON &= ~(1 << UIMOD);
USB_Init_Host();
#elif defined(USB_CAN_BE_BOTH)
if (UIDModeSelectEnabled)
{
UHWCON |= (1 << UIDE);
USB_INT_Enable(USB_INT_IDTI);
}
if (USB_CurrentMode == USB_MODE_DEVICE) if (USB_CurrentMode == USB_MODE_DEVICE)
{ {
if (USB_Options & USB_DEVICE_OPT_LOWSPEED) UHWCON |= (1 << UIMOD);
USB_Device_SetLowSpeed(); USB_Init_Device();
}
else else
USB_Device_SetFullSpeed(); {
UHWCON &= ~(1 << UIMOD);
USB_Init_Host();
} }
#endif #endif
#if (defined(USB_CAN_BE_DEVICE) && !defined(FIXED_CONTROL_ENDPOINT_SIZE)) USB_OTGPAD_On();
if (USB_CurrentMode == USB_MODE_DEVICE) USB_Attach();
}
#if defined(USB_CAN_BE_DEVICE)
static void USB_Init_Device(void)
{ {
USB_DeviceState = DEVICE_STATE_Unattached;
USB_ConfigurationNumber = 0;
#if !defined(NO_DEVICE_REMOTE_WAKEUP)
USB_RemoteWakeupEnabled = false;
#endif
#if !defined(NO_DEVICE_SELF_POWER)
USB_CurrentlySelfPowered = false;
#endif
#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
USB_Descriptor_Device_t* DeviceDescriptorPtr; USB_Descriptor_Device_t* DeviceDescriptorPtr;
if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR) if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
@ -203,54 +184,34 @@ void USB_ResetInterface(void)
USB_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size); USB_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
#endif #endif
} }
}
#endif #endif
USB_Attach(); #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
USB_Device_SetLowSpeed();
else
USB_Device_SetFullSpeed();
USB_INT_Enable(USB_INT_VBUS);
#endif
#if defined(USB_DEVICE_ONLY)
USB_INT_Clear(USB_INT_SUSPEND); USB_INT_Clear(USB_INT_SUSPEND);
USB_INT_Enable(USB_INT_SUSPEND); USB_INT_Enable(USB_INT_SUSPEND);
USB_INT_Clear(USB_INT_EORSTI); USB_INT_Clear(USB_INT_EORSTI);
USB_INT_Enable(USB_INT_EORSTI); USB_INT_Enable(USB_INT_EORSTI);
#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
USB_INT_Enable(USB_INT_VBUS);
#endif
#elif defined(USB_HOST_ONLY)
USB_Host_HostMode_On();
USB_Host_VBUS_Auto_Off();
USB_OTGPAD_Off();
USB_Host_VBUS_Manual_Enable();
USB_Host_VBUS_Manual_On();
USB_INT_Enable(USB_INT_SRPI);
USB_INT_Enable(USB_INT_BCERRI);
#else
if (USB_CurrentMode == USB_MODE_DEVICE)
{
USB_INT_Clear(USB_INT_SUSPEND);
USB_INT_Enable(USB_INT_SUSPEND);
USB_INT_Clear(USB_INT_EORSTI);
USB_INT_Enable(USB_INT_EORSTI);
#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
USB_INT_Enable(USB_INT_VBUS);
#endif
Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
ENDPOINT_BANK_SINGLE);
} }
else if (USB_CurrentMode == USB_MODE_HOST) #endif
#if defined(USB_CAN_BE_HOST)
static void USB_Init_Host(void)
{ {
USB_HostState = HOST_STATE_Unattached;
USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
USB_Host_HostMode_On(); USB_Host_HostMode_On();
USB_CLK_Unfreeze();
USB_Host_VBUS_Auto_Off(); USB_Host_VBUS_Auto_Off();
USB_OTGPAD_Off();
USB_Host_VBUS_Manual_Enable(); USB_Host_VBUS_Manual_Enable();
USB_Host_VBUS_Manual_On(); USB_Host_VBUS_Manual_On();
@ -258,4 +219,3 @@ void USB_ResetInterface(void)
USB_INT_Enable(USB_INT_BCERRI); USB_INT_Enable(USB_INT_BCERRI);
} }
#endif #endif
}

11
LUFA/Drivers/USB/LowLevel/USBController.h
View File

@ -346,6 +346,17 @@
/* Private Interface - For use in library only: */ /* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__) #if !defined(__DOXYGEN__)
/* Function Prototypes: */
#if defined(__INCLUDE_FROM_USB_CONTROLLER_C)
#if defined(USB_CAN_BE_DEVICE)
static void USB_Init_Device(void);
#endif
#if defined(USB_CAN_BE_HOST)
static void USB_Init_Host(void);
#endif
#endif
/* Inline Functions: */ /* Inline Functions: */
static inline void USB_PLL_On(void) ATTR_ALWAYS_INLINE; static inline void USB_PLL_On(void) ATTR_ALWAYS_INLINE;
static inline void USB_PLL_On(void) static inline void USB_PLL_On(void)

11
LUFA/Drivers/USB/LowLevel/USBInterrupt.c
View File

@ -168,6 +168,8 @@ ISR(USB_GEN_vect, ISR_BLOCK)
#endif #endif
#if defined(USB_CAN_BE_HOST) #if defined(USB_CAN_BE_HOST)
bool MustResetInterface = false;
if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI)) if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
{ {
USB_INT_Clear(USB_INT_DDISCI); USB_INT_Clear(USB_INT_DDISCI);
@ -176,7 +178,7 @@ ISR(USB_GEN_vect, ISR_BLOCK)
EVENT_USB_Host_DeviceUnattached(); EVENT_USB_Host_DeviceUnattached();
USB_ResetInterface(); MustResetInterface = true;
} }
if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI)) if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
@ -211,7 +213,7 @@ ISR(USB_GEN_vect, ISR_BLOCK)
EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0); EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
EVENT_USB_Host_DeviceUnattached(); EVENT_USB_Host_DeviceUnattached();
USB_ResetInterface(); MustResetInterface = true;
} }
if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI)) if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
@ -236,8 +238,11 @@ ISR(USB_GEN_vect, ISR_BLOCK)
USB_CurrentMode = USB_GetUSBModeFromUID(); USB_CurrentMode = USB_GetUSBModeFromUID();
EVENT_USB_UIDChange(); EVENT_USB_UIDChange();
USB_ResetInterface(); MustResetInterface = true;
} }
if (MustResetInterface)
USB_ResetInterface();
#endif #endif
} }