void USB_Host_ProcessNextHostState(void)
{
uint8_t ErrorCode = HOST_ENUMERROR_NoError;
uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
static uint16_t WaitMSRemaining;
static uint8_t PostWaitState;
switch (USB_HostState)
{
case HOST_STATE_WaitForDevice:
if (WaitMSRemaining)
{
if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
{
USB_HostState = PostWaitState;
ErrorCode = HOST_ENUMERROR_WaitStage;
break;
}
if (!(--WaitMSRemaining))
USB_HostState = PostWaitState;
}
break;
case HOST_STATE_Powered:
WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;
break;
case HOST_STATE_Powered_WaitForDeviceSettle:
if (WaitMSRemaining--)
{
_delay_ms(1);
break;
}
else
{
USB_Host_VBUS_Manual_Off();
USB_OTGPAD_On();
USB_Host_VBUS_Auto_Enable();
USB_Host_VBUS_Auto_On();
USB_HostState = HOST_STATE_Powered_WaitForConnect;
}
break;
case HOST_STATE_Powered_WaitForConnect:
if (USB_INT_HasOccurred(USB_INT_DCONNI))
{
USB_INT_Clear(USB_INT_DCONNI);
USB_INT_Clear(USB_INT_DDISCI);
USB_INT_Clear(USB_INT_VBERRI);
USB_INT_Enable(USB_INT_VBERRI);
USB_Host_ResumeBus();
Pipe_ClearPipes();
HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);
}
break;
case HOST_STATE_Powered_DoReset:
USB_Host_ResetDevice();
HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);
break;
case HOST_STATE_Powered_ConfigPipe:
Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);
if (!(Pipe_IsConfigured()))
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_HostState = HOST_STATE_Default;
break;
case HOST_STATE_Default:
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_GetDescriptor,
.wValue = (DTYPE_Device << 8),
.wIndex = 0,
.wLength = 8,
};
uint8_t DataBuffer[8];
if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];
USB_Host_ResetDevice();
HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);
break;
case HOST_STATE_Default_PostReset:
Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
USB_ControlPipeSize, PIPE_BANK_SINGLE);
if (!(Pipe_IsConfigured()))
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_SetAddress,
.wValue = USB_HOST_DEVICEADDRESS,
.wIndex = 0,
.wLength = 0,
};
if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);
break;
case HOST_STATE_Default_PostAddressSet:
USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
EVENT_USB_Host_DeviceEnumerationComplete();
USB_HostState = HOST_STATE_Addressed;
break;
}
if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))
{
EVENT_USB_Host_DeviceEnumerationFailed(ErrorCode, SubErrorCode);
USB_Host_VBUS_Auto_Off();
EVENT_USB_Host_DeviceUnattached();
USB_ResetInterface();
}
}
uint8_t USB_Host_WaitMS(uint8_t MS)
{
bool BusSuspended = USB_Host_IsBusSuspended();
uint8_t ErrorCode = HOST_WAITERROR_Successful;
bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
USB_INT_Disable(USB_INT_HSOFI);
USB_INT_Clear(USB_INT_HSOFI);
USB_Host_ResumeBus();
while (MS)
{
if (USB_INT_HasOccurred(USB_INT_HSOFI))
{
USB_INT_Clear(USB_INT_HSOFI);
MS--;
}
if ((USB_HostState == HOST_STATE_Unattached) || (USB_CurrentMode != USB_MODE_Host))
{
ErrorCode = HOST_WAITERROR_DeviceDisconnect;
break;
}
if (Pipe_IsError() == true)
{
Pipe_ClearError();
ErrorCode = HOST_WAITERROR_PipeError;
break;
}
if (Pipe_IsStalled() == true)
{
Pipe_ClearStall();
ErrorCode = HOST_WAITERROR_SetupStalled;
break;
}
}
if (BusSuspended)
USB_Host_SuspendBus();
if (HSOFIEnabled)
USB_INT_Enable(USB_INT_HSOFI);
return ErrorCode;
}
static void USB_Host_ResetDevice(void)
{
bool BusSuspended = USB_Host_IsBusSuspended();
USB_INT_Disable(USB_INT_DDISCI);
USB_Host_ResetBus();
while (!(USB_Host_IsBusResetComplete()));
USB_Host_ResumeBus();
bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
USB_INT_Disable(USB_INT_HSOFI);
USB_INT_Clear(USB_INT_HSOFI);
for (uint8_t MSRem = 10; MSRem != 0; MSRem--)
{
/* Workaround for powerless-pull-up devices. After a USB bus reset,
all disconnection interrupts are suppressed while a USB frame is
looked for - if it is found within 10ms, the device is still
present. */
if (USB_INT_HasOccurred(USB_INT_HSOFI))
{
USB_INT_Clear(USB_INT_HSOFI);
USB_INT_Clear(USB_INT_DDISCI);
break;
}
_delay_ms(1);
}
if (HSOFIEnabled)
USB_INT_Enable(USB_INT_HSOFI);
if (BusSuspended)
USB_Host_SuspendBus();
USB_INT_Enable(USB_INT_DDISCI);
}
void USB_Host_ProcessNextHostState(uint8_t corenum)
{
uint8_t ErrorCode = HOST_ENUMERROR_NoError;
uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
static uint16_t WaitMSRemaining;
static uint8_t PostWaitState;
switch (USB_HostState[corenum])
{
case HOST_STATE_WaitForDevice:
if (WaitMSRemaining)
{
if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
{
USB_HostState[corenum] = PostWaitState;
ErrorCode = HOST_ENUMERROR_WaitStage;
break;
}
if (!(--WaitMSRemaining))
USB_HostState[corenum] = PostWaitState;
}
break;
case HOST_STATE_Powered:
WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
USB_HostState[corenum] = HOST_STATE_Powered_WaitForDeviceSettle;
break;
case HOST_STATE_Powered_WaitForDeviceSettle:
if (WaitMSRemaining--)
{
Delay_MS(1);
break;
}
else
{
USB_Host_VBUS_Manual_Off();
USB_OTGPAD_On();
USB_Host_VBUS_Auto_Enable();
USB_Host_VBUS_Auto_On();
USB_HostState[corenum] = HOST_STATE_Powered_WaitForConnect;
}
break;
case HOST_STATE_Powered_WaitForConnect:
HOST_TASK_NONBLOCK_WAIT(corenum, 100, HOST_STATE_Powered_DoReset);
break;
case HOST_STATE_Powered_DoReset:
{
HCD_USB_SPEED DeviceSpeed;
HcdRhPortReset(corenum,1);
HcdGetDeviceSpeed(corenum, 1, &DeviceSpeed); // skip checking status
USB_Host_SetDeviceSpeed(corenum,DeviceSpeed);
HOST_TASK_NONBLOCK_WAIT(corenum, 200, HOST_STATE_Powered_ConfigPipe);
}
break;
case HOST_STATE_Powered_ConfigPipe:
if (!Pipe_ConfigurePipe(corenum, PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE) )
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_HostState[corenum] = HOST_STATE_Default;
break;
case HOST_STATE_Default:
{
USB_Descriptor_Device_t DevDescriptor;
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_GetDescriptor,
.wValue = (DTYPE_Device << 8),
.wIndex = 0,
.wLength = 8,
};
if ((SubErrorCode = USB_Host_SendControlRequest(corenum, &DevDescriptor)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
USB_Host_ControlPipeSize[corenum] = DevDescriptor.Endpoint0Size;
Pipe_ClosePipe(corenum, PIPE_CONTROLPIPE);
HcdRhPortReset(corenum,1);
HOST_TASK_NONBLOCK_WAIT(corenum, 200, HOST_STATE_Default_PostReset);
}
break;
case HOST_STATE_Default_PostReset:
if (!Pipe_ConfigurePipe(corenum, PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
USB_Host_ControlPipeSize[corenum], PIPE_BANK_SINGLE) )
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_SetAddress,
.wValue = USB_HOST_DEVICEADDRESS,
.wIndex = 0,
.wLength = 0,
};
if ((SubErrorCode = USB_Host_SendControlRequest(corenum, NULL)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
Pipe_ClosePipe(corenum, PIPE_CONTROLPIPE);
HOST_TASK_NONBLOCK_WAIT(corenum, 100, HOST_STATE_Default_PostAddressSet);
break;
case HOST_STATE_Default_PostAddressSet:
Pipe_ConfigurePipe(corenum, PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
USB_Host_ControlPipeSize[corenum], PIPE_BANK_SINGLE);
USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
USB_HostState[corenum] = HOST_STATE_Addressed;
EVENT_USB_Host_DeviceEnumerationComplete(corenum);
break;
}
if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState[corenum] != HOST_STATE_Unattached))
{
EVENT_USB_Host_DeviceEnumerationFailed(corenum, ErrorCode, SubErrorCode);
USB_Host_VBUS_Auto_Off();
EVENT_USB_Host_DeviceUnattached(corenum);
USB_ResetInterface(corenum);
}
}
uint8_t USB_Host_WaitMS(uint8_t MS)
{
return HOST_WAITERROR_Successful;
}
void USB_Host_Enumerate (uint8_t HostId) /* Part of Interrupt Service Routine */
{
// CurrentHostID = HostId;
// hostselected = HostId;
EVENT_USB_Host_DeviceAttached(HostId);
USB_HostState[HostId] = HOST_STATE_Powered;
}
void USB_Host_DeEnumerate(uint8_t HostId) /* Part of Interrupt Service Routine */
{
uint8_t i;
Pipe_ClosePipe(HostId, PIPE_CONTROLPIPE); // FIXME close only relevant pipes , take long time in ISR
for(i = PIPE_CONTROLPIPE+1; i < PIPE_TOTAL_PIPES; i++)
{
if(PipeInfo[HostId][i].PipeHandle != 0)
{
Pipe_ClosePipe(HostId, i);
}
}
EVENT_USB_Host_DeviceUnattached(HostId);
USB_HostState[HostId] = HOST_STATE_Unattached;
}