uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)Buffer;
bool LastPacketFull = false;
if (Length > USB_ControlRequest.wLength)
Length = USB_ControlRequest.wLength;
while (Length && !(Endpoint_IsOUTReceived()))
{
while (!(Endpoint_IsINReady()));
while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
{
Endpoint_Write_Byte(*(DataStream++));
Length--;
}
LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
Endpoint_ClearIN();
}
if (Endpoint_IsOUTReceived())
return ENDPOINT_RWCSTREAM_HostAborted;
if (LastPacketFull)
{
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
while (!(Endpoint_IsOUTReceived()));
return ENDPOINT_RWCSTREAM_NoError;
}
/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
* the device from the USB host before passing along unhandled control requests to the library for processing
* internally.
*/
void EVENT_USB_Device_ControlRequest(void)
{
/* Ignore any requests that aren't directed to the HID interface */
if ((USB_ControlRequest.bmRequestType & (CONTROL_REQTYPE_TYPE | CONTROL_REQTYPE_RECIPIENT)) !=
(REQTYPE_CLASS | REQREC_INTERFACE))
{
return;
}
/* Process HID specific control requests */
switch (USB_ControlRequest.bRequest)
{
case HID_REQ_SetReport:
Endpoint_ClearSETUP();
/* Wait until the command has been sent by the host */
while (!(Endpoint_IsOUTReceived()));
/* Read in the write destination address */
uint16_t PageAddress = Endpoint_Read_16_LE();
/* Check if the command is a program page command, or a start application command */
if (PageAddress == COMMAND_STARTAPPLICATION)
{
RunBootloader = false;
}
else
{
/* Erase the given FLASH page, ready to be programmed */
boot_page_erase(PageAddress);
boot_spm_busy_wait();
/* Write each of the FLASH page's bytes in sequence */
for (uint8_t PageWord = 0; PageWord < (SPM_PAGESIZE / 2); PageWord++)
{
/* Check if endpoint is empty - if so clear it and wait until ready for next packet */
if (!(Endpoint_BytesInEndpoint()))
{
Endpoint_ClearOUT();
while (!(Endpoint_IsOUTReceived()));
}
/* Write the next data word to the FLASH page */
boot_page_fill(PageAddress + ((uint16_t)PageWord << 1), Endpoint_Read_16_LE());
}
/* Write the filled FLASH page to memory */
boot_page_write(PageAddress);
boot_spm_busy_wait();
/* Re-enable RWW section */
boot_rww_enable();
}
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
break;
}
}
/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
* control requests that are not handled internally by the USB library (including the HID commands, which are
* all issued via the control endpoint), so that they can be handled appropriately for the application.
*/
void EVENT_USB_UnhandledControlPacket(void)
{
/* Handle HID Class specific requests */
switch (USB_ControlRequest.bRequest)
{
case REQ_SetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Wait until the command (report) has been sent by the host */
while (!(Endpoint_IsOUTReceived()));
/* Read in the write destination address */
uint16_t PageAddress = Endpoint_Read_Word_LE();
/* Check if the command is a program page command, or a start application command */
if (PageAddress == TEENSY_STARTAPPLICATION)
{
RunBootloader = false;
}
else
{
/* Erase the given FLASH page, ready to be programmed */
boot_page_erase(PageAddress);
boot_spm_busy_wait();
/* Write each of the FLASH page's bytes in sequence */
for (uint8_t PageByte = 0; PageByte < 128; PageByte += 2)
{
/* Check if endpoint is empty - if so clear it and wait until ready for next packet */
if (!(Endpoint_BytesInEndpoint()))
{
Endpoint_ClearOUT();
while (!(Endpoint_IsOUTReceived()));
}
/* Write the next data word to the FLASH page */
boot_page_fill(PageAddress + PageByte, Endpoint_Read_Word_LE());
}
/* Write the filled FLASH page to memory */
boot_page_write(PageAddress);
boot_spm_busy_wait();
/* Re-enable RWW section */
boot_rww_enable();
}
Endpoint_ClearOUT();
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
break;
}
}
uint8_t TEMPLATE_FUNC_NAME (const void* const Buffer,
uint16_t Length)
{
uint8_t* DataStream = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
bool LastPacketFull = false;
Endpoint_SelectEndpoint(USB_Endpoint_SelectedEndpoint | ENDPOINT_DIR_IN);
if (Length > USB_ControlRequest.wLength)
Length = USB_ControlRequest.wLength;
else if (!(Length))
Endpoint_ClearIN();
while (Length || LastPacketFull)
{
uint8_t USB_DeviceState_LCL = USB_DeviceState;
if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
return ENDPOINT_RWCSTREAM_BusSuspended;
else if (Endpoint_IsSETUPReceived())
return ENDPOINT_RWCSTREAM_HostAborted;
else if (Endpoint_IsOUTReceived())
break;
if (Endpoint_IsINReady())
{
uint16_t BytesInEndpoint = Endpoint_BytesInEndpoint();
while (Length && (BytesInEndpoint < USB_Device_ControlEndpointSize))
{
TEMPLATE_TRANSFER_BYTE(DataStream);
TEMPLATE_BUFFER_MOVE(DataStream, 1);
Length--;
BytesInEndpoint++;
}
LastPacketFull = (BytesInEndpoint == USB_Device_ControlEndpointSize);
Endpoint_ClearIN();
}
}
while (!(Endpoint_IsOUTReceived()))
{
uint8_t USB_DeviceState_LCL = USB_DeviceState;
if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
return ENDPOINT_RWCSTREAM_BusSuspended;
}
return ENDPOINT_RWCSTREAM_NoError;
}
void HID_Task(void)
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);
if (Endpoint_IsOUTReceived())
{
if (Endpoint_IsReadWriteAllowed())
{
Endpoint_Read_Stream_LE(&HIDReportInData, sizeof(HIDReportInData), NULL);
}
Endpoint_ClearOUT();
}
Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);
if (Endpoint_IsINReady())
{
Endpoint_Write_Stream_LE(&HIDReportOutData, sizeof(HIDReportOutData), NULL);
memset(&HIDReportOutData, 0, GENERIC_REPORT_SIZE + 1);
Endpoint_ClearIN();
}
}
// From USB/Host to Arduino/Serial
void MIDI_To_Arduino(void)
{
// Device must be connected and configured for the task to run
if (USB_DeviceState != DEVICE_STATE_Configured) return;
// Select the MIDI OUT stream
Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPADDR);
/* Check if a MIDI command has been received */
if (Endpoint_IsOUTReceived())
{
MIDI_EventPacket_t MIDIEvent;
/* Read the MIDI event packet from the endpoint */
Endpoint_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL);
// Passthrough to Arduino
Serial_SendByte(MIDIEvent.Data1);
Serial_SendByte(MIDIEvent.Data2);
Serial_SendByte(MIDIEvent.Data3);
LEDs_TurnOffLEDs(LEDS_LED1);
rx_ticks = TICK_COUNT;
/* If the endpoint is now empty, clear the bank */
if (!(Endpoint_BytesInEndpoint()))
{
/* Clear the endpoint ready for new packet */
Endpoint_ClearOUT();
}
}
}
uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
void* Buffer,
uint16_t* const PacketLength)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) ||
(RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized))
{
return ENDPOINT_RWSTREAM_DeviceDisconnected;
}
Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpoint.Address);
*PacketLength = 0;
if (!(Endpoint_IsOUTReceived()))
return ENDPOINT_RWSTREAM_NoError;
RNDIS_Packet_Message_t RNDISPacketHeader;
Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL);
if (le32_to_cpu(RNDISPacketHeader.DataLength) > ETHERNET_FRAME_SIZE_MAX)
{
Endpoint_StallTransaction();
return RNDIS_ERROR_LOGICAL_CMD_FAILED;
}
*PacketLength = (uint16_t)le32_to_cpu(RNDISPacketHeader.DataLength);
Endpoint_Read_Stream_LE(Buffer, *PacketLength, NULL);
Endpoint_ClearOUT();
return ENDPOINT_RWSTREAM_NoError;
}
/** Function to manage CDC data transmission and reception to and from the host. */
void CDC_Task(void)
{
char* ReportString = NULL;
uint8_t JoyStatus_LCL = Joystick_GetStatus();
static bool ActionSent = false;
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Determine if a joystick action has occurred */
if (JoyStatus_LCL & JOY_UP)
ReportString = "Joystick Up\r\n";
else if (JoyStatus_LCL & JOY_DOWN)
ReportString = "Joystick Down\r\n";
else if (JoyStatus_LCL & JOY_LEFT)
ReportString = "Joystick Left\r\n";
else if (JoyStatus_LCL & JOY_RIGHT)
ReportString = "Joystick Right\r\n";
else if (JoyStatus_LCL & JOY_PRESS)
ReportString = "Joystick Pressed\r\n";
else
ActionSent = false;
/* Flag management - Only allow one string to be sent per action */
if ((ReportString != NULL) && (ActionSent == false) && LineEncoding.BaudRateBPS)
{
ActionSent = true;
/* Select the Serial Tx Endpoint */
Endpoint_SelectEndpoint(CDC_TX_EPADDR);
/* Write the String to the Endpoint */
Endpoint_Write_Stream_LE(ReportString, strlen(ReportString), NULL);
/* Remember if the packet to send completely fills the endpoint */
bool IsFull = (Endpoint_BytesInEndpoint() == CDC_TXRX_EPSIZE);
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearIN();
/* If the last packet filled the endpoint, send an empty packet to release the buffer on
* the receiver (otherwise all data will be cached until a non-full packet is received) */
if (IsFull)
{
/* Wait until the endpoint is ready for another packet */
Endpoint_WaitUntilReady();
/* Send an empty packet to ensure that the host does not buffer data sent to it */
Endpoint_ClearIN();
}
}
/* Select the Serial Rx Endpoint */
Endpoint_SelectEndpoint(CDC_RX_EPADDR);
/* Throw away any received data from the host */
if (Endpoint_IsOUTReceived())
Endpoint_ClearOUT();
}
/** Attempts to read in the TMC message header from the TMC interface.
*
* \param[out] MessageHeader Pointer to a location where the read header (if any) should be stored
*
* \return Boolean true if a header was read, false otherwise
*/
bool ReadTMCHeader(TMC_MessageHeader_t* const MessageHeader)
{
uint16_t BytesTransferred;
uint8_t ErrorCode;
/* Select the Data Out endpoint */
Endpoint_SelectEndpoint(TMC_OUT_EPADDR);
/* Abort if no command has been sent from the host */
if (!(Endpoint_IsOUTReceived()))
return false;
/* Read in the header of the command from the host */
BytesTransferred = 0;
while ((ErrorCode = Endpoint_Read_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), &BytesTransferred)) ==
ENDPOINT_RWSTREAM_IncompleteTransfer)
{
if (IsTMCBulkOUTReset)
break;
}
/* Store the new command tag value for later use */
CurrentTransferTag = MessageHeader->Tag;
/* Indicate if the command has been aborted or not */
return (!(IsTMCBulkOUTReset) && (ErrorCode == ENDPOINT_RWSTREAM_NoError));
}
uint8_t Endpoint_WaitUntilReady(void)
{
#if (USB_STREAM_TIMEOUT_MS < 0xFF)
uint8_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
#else
uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
#endif
for (;;)
{
if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
{
if (Endpoint_IsINReady())
return ENDPOINT_READYWAIT_NoError;
}
else
{
if (Endpoint_IsOUTReceived())
return ENDPOINT_READYWAIT_NoError;
}
if (USB_DeviceState == DEVICE_STATE_Unattached)
return ENDPOINT_READYWAIT_DeviceDisconnected;
else if (Endpoint_IsStalled())
return ENDPOINT_READYWAIT_EndpointStalled;
if (USB_INT_HasOccurred(USB_INT_SOFI))
{
USB_INT_Clear(USB_INT_SOFI);
if (!(TimeoutMSRem--))
return ENDPOINT_READYWAIT_Timeout;
}
}
}
int16_t Device_ReceiveByte(USB_EPInfo_Device_t* const EPInfo)
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return -1;
int16_t ReceivedByte = -1;
Endpoint_SelectEndpoint(EPInfo->DataOUTEPAddress);
if (Endpoint_IsOUTReceived())
// Endpoint_AVR8.h
// Determines if the selected OUT endpoint has received new packet from
// the host.
{
if (Endpoint_BytesInEndpoint())
// Endpoint_AVR8.h
// Indicates the number of bytes currently stored in the current
// endpoint's selected bank.
ReceivedByte = Endpoint_Read_8();
// Endpoint_AVR8.h
// Reads one byte from the currently selected endpoint's bank,
// for OUT direction endpoints.
if (!(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
// Endpoint_AVR8.h
// Acknowledges an OUT packet to the host on the currently selected
// endpoint, freeing up the endpoint for the next packet and
// switching to the alternative endpoint bank if double banked.
}
return ReceivedByte;
}
/** Main program entry point. This routine configures the hardware required by the application, then
* enters a loop to run the application tasks in sequence.
*/
int main(void)
{
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
for (;;)
{
USB_USBTask();
uint8_t ReceivedData[VENDOR_IO_EPSIZE];
memset(ReceivedData, 0x00, sizeof(ReceivedData));
Endpoint_SelectEndpoint(VENDOR_OUT_EPADDR);
if (Endpoint_IsOUTReceived())
{
Endpoint_Read_Stream_LE(ReceivedData, VENDOR_IO_EPSIZE, NULL);
Endpoint_ClearOUT();
Endpoint_SelectEndpoint(VENDOR_IN_EPADDR);
Endpoint_Write_Stream_LE(ReceivedData, VENDOR_IO_EPSIZE, NULL);
Endpoint_ClearIN();
}
}
}
void usb_check_incoming()
{
uint8_t dataReceived = -1;
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
uint8_t GenericData[BUFFER_EPSIZE];
Endpoint_SelectEndpoint(GENERIC_OUT_EPADDR);
// packet received?
if ( Endpoint_IsOUTReceived() )
{
if ( Endpoint_IsReadWriteAllowed())
{
Endpoint_Read_Stream_LE( &GenericData, sizeof(GenericData), NULL);
dataReceived = 1;
}
Endpoint_ClearOUT();
}
if ( dataReceived == 1 )
{
usb_process_incoming(GenericData);
//processDataCallBack(GenericData);
}
}
/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
* control requests that are not handled internally by the USB library (including the HID commands, which are
* all issued via the control endpoint), so that they can be handled appropriately for the application.
*/
void EVENT_USB_Device_UnhandledControlRequest(void)
{
uint8_t* ReportData;
uint8_t ReportSize;
/* Handle HID Class specific requests */
switch (USB_ControlRequest.bRequest)
{
case REQ_GetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Determine if it is the mouse or the keyboard data that is being requested */
if (!(USB_ControlRequest.wIndex))
{
ReportData = (uint8_t*)&KeyboardReportData;
ReportSize = sizeof(KeyboardReportData);
}
else
{
ReportData = (uint8_t*)&MouseReportData;
ReportSize = sizeof(MouseReportData);
}
/* Write the report data to the control endpoint */
Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
/* Clear the report data afterwards */
memset(ReportData, 0, ReportSize);
/* Finalize the stream transfer to send the last packet or clear the host abort */
Endpoint_ClearOUT();
}
break;
case REQ_SetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Wait until the LED report has been sent by the host */
while (!(Endpoint_IsOUTReceived()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
/* Read in and process the LED report from the host */
Keyboard_ProcessLEDReport(Endpoint_Read_Byte());
/* Clear the endpoint data */
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
}
break;
}
}
uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
uint16_t bytes = 0;
if ((USB_DeviceState == DEVICE_STATE_Configured) && (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS != 0))
{
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpoint.Address);
if (Endpoint_IsOUTReceived())
{
if (!(Endpoint_BytesInEndpoint()))
{
Endpoint_ClearOUT();
bytes = 0;
}
else
{
bytes = Endpoint_BytesInEndpoint();
}
}
else
{
bytes = 0;
}
}
return bytes;
}
uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
{
uint8_t* DataStream = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
if (!(Length))
Endpoint_ClearOUT();
while (Length)
{
if (Endpoint_IsSETUPReceived())
return ENDPOINT_RWCSTREAM_HostAborted;
if (USB_DeviceState == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
if (Endpoint_IsOUTReceived())
{
while (Length && Endpoint_BytesInEndpoint())
{
TEMPLATE_TRANSFER_BYTE(DataStream);
Length--;
}
Endpoint_ClearOUT();
}
}
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
}
return ENDPOINT_RWCSTREAM_NoError;
}
void ecmd_lufa_rx(void) {
/* Select the Serial Rx Endpoint */
Endpoint_SelectEndpoint(CDC_RX_EPNUM);
/* Check to see if a packet has been received from the host */
if (Endpoint_IsOUTReceived()) {
/* Read the bytes in from the endpoint into the buffer while space is available */
while (Endpoint_BytesInEndpoint() && !must_parse) {
/* Store each character from the endpoint */
uint8_t data = Endpoint_Read_Byte();
if (data == '\n' || data == '\r' || recv_len == sizeof(recv_buffer)) {
recv_buffer[recv_len] = 0;
must_parse = 1;
} else {
recv_buffer[recv_len++] = data;
}
}
/* Check to see if all bytes in the current packet have been read */
if (!(Endpoint_BytesInEndpoint())) {
/* Clear the endpoint buffer */
Endpoint_ClearOUT();
}
}
}
int USBSerial::available(void)
{
Endpoint_SelectEndpoint(CDC_RX_EPADDR);
if (Endpoint_IsOUTReceived()) {
if (Endpoint_BytesInEndpoint()) {
return (unsigned int)Endpoint_BytesInEndpoint() + peekByteCnt;
} else {
Endpoint_ClearOUT();
if (Endpoint_IsOUTReceived()) {
return (unsigned int)Endpoint_BytesInEndpoint() + peekByteCnt;
}
}
}
return 0 + peekByteCnt;
}
bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(AudioInterfaceInfo->State.InterfaceEnabled))
return false;
Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataOUTEndpointNumber);
return Endpoint_IsOUTReceived();
}
uint8_t Endpoint_Read_Control_Stream_LE(void* const Buffer,
uint16_t Length)
{
while(!Endpoint_IsOUTReceived()); //FIXME: this safe checking is fine for LPC18xx
Endpoint_Read_Stream_LE(Buffer,Length,NULL); //but hangs LPC17xx --> comment out
Endpoint_ClearOUT();
return ENDPOINT_RWCSTREAM_NoError;
}
void HID_Task(void)
{
ring_buffer * _tx_buffer = &tx_buffer_cdc;
/* Device must be connected and configured for the task to run */
//if (USB_DeviceState != DEVICE_STATE_Configured)
// return;
Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);
/* Check to see if a packet has been sent from the host */
if (Endpoint_IsOUTReceived())
{
/* Check to see if the packet contains data */
if (Endpoint_IsReadWriteAllowed())
{
/* Create a temporary buffer to hold the read in report from the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Read Generic Report Data */
Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData), NULL);
/* Process Generic Report Data */
ProcessGenericHIDReport(GenericData);
dataReceived = 1;
}
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearOUT();
}
Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);
/* Check to see if the host is ready to accept another packet */
//if (Endpoint_IsINReady() && dataReceived!=0)
// && (_tx_buffer->head != _tx_buffer->tail)
if (Endpoint_IsINReady())
{
/* Create a temporary buffer to hold the report to send to the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Create Generic Report Data */
CreateGenericHIDReport(GenericData);
/* Write Generic Report Data */
Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData), NULL);
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearIN();
dataReceived = 0;
}
}
int USBSerial::readRXEndpoint(void)
{
Endpoint_SelectEndpoint(CDC_RX_EPADDR);
if (Endpoint_IsOUTReceived()) {
if (Endpoint_BytesInEndpoint()) {
return (unsigned char)Endpoint_Read_8();
} else {
Endpoint_ClearOUT();
__asm__("nop\n\t""nop\n\t");
__asm__("nop\n\t""nop\n\t");
if (Endpoint_IsOUTReceived()) {
return (unsigned char)Endpoint_Read_8();
}
}
}
return -1;
}
/** Reads the next OUT report from the host from the OUT endpoint, if one has been sent. */
void ReceiveNextReport(void)
{
static struct
{
struct
{
unsigned char type;
unsigned char length;
} header;
unsigned char buffer[EPSIZE];
} packet = { .header.type = BYTE_OUT_REPORT };
uint16_t length = 0;
/* Select the OUT Report Endpoint */
Endpoint_SelectEndpoint(OUT_EPNUM);
/* Check if OUT Endpoint contains a packet */
if (Endpoint_IsOUTReceived())
{
/* Check to see if the packet contains data */
if (Endpoint_IsReadWriteAllowed())
{
/* Read OUT Report Data */
uint8_t ErrorCode = Endpoint_Read_Stream_LE(packet.buffer, sizeof(packet.buffer), &length);
if(ErrorCode == ENDPOINT_RWSTREAM_NoError)
{
length = sizeof(packet.buffer);
}
}
/* Handshake the OUT Endpoint - clear endpoint and ready for next report */
Endpoint_ClearOUT();
if(length)
{
packet.header.length = length & 0xFF;
Serial_SendData(&packet, sizeof(packet.header) + packet.header.length);
}
}
}
/** Function to manage HID report generation and transmission to the host, when in report mode. */
void HID_Task(void)
{
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Send the next keypress report to the host */
SendNextReport();
/* Process the LED report sent from the host */
ReceiveNextReport();
}
uint8_t TEMPLATE_FUNC_NAME (const void* Buffer, uint16_t Length)
{
uint8_t* DataStream = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
bool LastPacketFull = false;
if (Length > USB_ControlRequest.wLength)
Length = USB_ControlRequest.wLength;
else if (!(Length))
Endpoint_ClearIN();
while (Length || LastPacketFull)
{
if (Endpoint_IsSETUPReceived())
return ENDPOINT_RWCSTREAM_HostAborted;
if (Endpoint_IsOUTReceived())
break;
if (USB_DeviceState == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
if (Endpoint_IsINReady())
{
while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
{
TEMPLATE_TRANSFER_BYTE(DataStream);
Length--;
}
LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
Endpoint_ClearIN();
}
}
while (!(Endpoint_IsOUTReceived()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return ENDPOINT_RWCSTREAM_DeviceDisconnected;
}
return ENDPOINT_RWCSTREAM_NoError;
}
bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) ||
(RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized))
{
return false;
}
Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpoint.Address);
return Endpoint_IsOUTReceived();
}
void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);
if (Endpoint_IsOUTReceived() && !(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
CDC_Device_Flush(CDCInterfaceInfo);
}
/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific
* control requests that are not handled internally by the USB library, so that they can be handled appropriately
* for the application.
*/
void EVENT_USB_Device_UnhandledControlRequest(void)
{
uint8_t* LineCodingData = (uint8_t*)&LineCoding;
/* Process CDC specific control requests */
switch (USB_ControlRequest.bRequest)
{
case REQ_GetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
for (uint8_t i = 0; i < sizeof(LineCoding); i++)
Endpoint_Write_Byte(*(LineCodingData++));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case REQ_SetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
while (!(Endpoint_IsOUTReceived()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
for (uint8_t i = 0; i < sizeof(LineCoding); i++)
*(LineCodingData++) = Endpoint_Read_Byte();
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
}
break;
case REQ_SetControlLineState:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
}
break;
}
}
/** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block
* if one has been issued, and performs validation to ensure that the block command is valid.
*
* \return Boolean true if a valid command block has been read in from the endpoint, false otherwise
*/
static bool ReadInCommandBlock(void)
{
uint16_t BytesTransferred;
/* Select the Data Out endpoint */
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPADDR);
/* Abort if no command has been sent from the host */
if (!(Endpoint_IsOUTReceived()))
return false;
/* Read in command block header */
BytesTransferred = 0;
while (Endpoint_Read_Stream_LE(&CommandBlock, (sizeof(CommandBlock) - sizeof(CommandBlock.SCSICommandData)),
&BytesTransferred) == ENDPOINT_RWSTREAM_IncompleteTransfer)
{
/* Check if the current command is being aborted by the host */
if (IsMassStoreReset)
return false;
}
/* Verify the command block - abort if invalid */
if ((CommandBlock.Signature != MS_CBW_SIGNATURE) ||
(CommandBlock.LUN >= TOTAL_LUNS) ||
(CommandBlock.Flags & 0x1F) ||
(CommandBlock.SCSICommandLength == 0) ||
(CommandBlock.SCSICommandLength > sizeof(CommandBlock.SCSICommandData)))
{
/* Stall both data pipes until reset by host */
Endpoint_StallTransaction();
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPADDR);
Endpoint_StallTransaction();
return false;
}
/* Read in command block command data */
BytesTransferred = 0;
while (Endpoint_Read_Stream_LE(&CommandBlock.SCSICommandData, CommandBlock.SCSICommandLength,
&BytesTransferred) == ENDPOINT_RWSTREAM_IncompleteTransfer)
{
/* Check if the current command is being aborted by the host */
if (IsMassStoreReset)
return false;
}
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearOUT();
return true;
}
void readFromHost(UsbDevice* usbDevice, bool (*callback)(uint8_t*)) {
uint8_t previousEndpoint = Endpoint_GetCurrentEndpoint();
Endpoint_SelectEndpoint(OUT_ENDPOINT_NUMBER);
while(Endpoint_IsOUTReceived()) {
for(int i = 0; i < usbDevice->outEndpointSize; i++) {
if(!QUEUE_PUSH(uint8_t, &usbDevice->receiveQueue,
Endpoint_Read_8())) {
debug("Dropped write from host -- queue is full");
}
}
processQueue(&usbDevice->receiveQueue, callback);
Endpoint_ClearOUT();
}
Endpoint_SelectEndpoint(previousEndpoint);
}
/** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block
* if one has been issued, and performs validation to ensure that the block command is valid.
*
* \return Boolean true if a valid command block has been read in from the endpoint, false otherwise
*/
static bool ReadInCommandBlock(void)
{
/* Select the Data Out endpoint */
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);
/* Abort if no command has been sent from the host */
if (!(Endpoint_IsOUTReceived()))
return false;
/* Read in command block header */
Endpoint_Read_Stream_LE(&CommandBlock, (sizeof(CommandBlock) - sizeof(CommandBlock.SCSICommandData)),
StreamCallback_AbortOnMassStoreReset);
/* Check if the current command is being aborted by the host */
if (IsMassStoreReset)
return false;
/* Verify the command block - abort if invalid */
if ((CommandBlock.Signature != CBW_SIGNATURE) ||
(CommandBlock.LUN >= TOTAL_LUNS) ||
(CommandBlock.Flags & 0x1F) ||
(CommandBlock.SCSICommandLength == 0) ||
(CommandBlock.SCSICommandLength > MAX_SCSI_COMMAND_LENGTH))
{
/* Stall both data pipes until reset by host */
Endpoint_StallTransaction();
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
Endpoint_StallTransaction();
return false;
}
/* Read in command block command data */
Endpoint_Read_Stream_LE(&CommandBlock.SCSICommandData,
CommandBlock.SCSICommandLength,
StreamCallback_AbortOnMassStoreReset);
/* Check if the current command is being aborted by the host */
if (IsMassStoreReset)
return false;
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearOUT();
return true;
}
