From e0af6014a746b1ef0707d388a58bcf77b9ea47f1 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sat, 11 Jul 2009 15:05:56 +0000 Subject: Added incomplete PrinterHost demo application. Seperated out Lib components of the incomplete BluetoothHost demo application out into a seperate Lib subfolder. Changed F_CLOCK entries in project makefiles to alias to F_CPU by default, as this is the most common case. --- .../Host/Incomplete/PrinterHost/ConfigDescriptor.c | 162 +++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.c (limited to 'Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.c') diff --git a/Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.c b/Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.c new file mode 100644 index 000000000..ed4bdb994 --- /dev/null +++ b/Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.c @@ -0,0 +1,162 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2009. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, and distribute this software + and its documentation for any purpose and without fee is hereby + granted, 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 disclaim 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 "ConfigDescriptor.h" + +uint8_t ProcessConfigurationDescriptor(void) +{ + uint8_t* ConfigDescriptorData; + uint16_t ConfigDescriptorSize; + uint8_t ErrorCode; + uint8_t FoundEndpoints = 0; + uint8_t FoundEndpointMask; + + /* Get Configuration Descriptor size from the device */ + if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful) + return ControlError; + + /* Ensure that the Configuration Descriptor isn't too large */ + if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE) + return DescriptorTooLarge; + + /* Allocate enough memory for the entire config descriptor */ + ConfigDescriptorData = alloca(ConfigDescriptorSize); + + /* Retrieve the entire configuration descriptor into the allocated buffer */ + USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData); + + /* Validate returned data - ensure first entry is a configuration header descriptor */ + if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration) + return InvalidConfigDataReturned; + + /* Get the printer interface from the configuration descriptor */ + if ((ErrorCode = USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, + NextPrinterInterface))) + { + /* Descriptor not found, error out */ + return NoInterfaceFound; + } + + /* Get the printer's communication protocol */ + PrinterProtocol = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).Protocol; + + /* Determine what endpoints to look for from the protocol */ + switch (PrinterProtocol) + { + case PROTOCOL_UNIDIRECTIONAL: + FoundEndpointMask = (1 << PRINTER_DATA_OUT_PIPE); + break; + case PROTOCOL_BIDIRECTIONAL: + case PROTOCOL_IEEE1284: + FoundEndpointMask = ((1 << PRINTER_DATA_OUT_PIPE) | (1 << PRINTER_DATA_IN_PIPE)); + break; + default: + return NoInterfaceFound; + } + + /* Get the IN and OUT data endpoints for the mass storage interface */ + while (FoundEndpoints != FoundEndpointMask) + { + /* Fetch the next bulk endpoint from the current printer interface */ + if ((ErrorCode = USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, + NextInterfaceBulkDataEndpoint))) + { + /* Descriptor not found, error out */ + return NoEndpointFound; + } + + USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t); + + /* Check if the endpoint is a bulk IN or bulk OUT endpoint, set appropriate globals */ + if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN) + { + /* Configure the data IN pipe */ + Pipe_ConfigurePipe(PRINTER_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN, + EndpointData->EndpointAddress, EndpointData->EndpointSize, + PIPE_BANK_SINGLE); + + Pipe_SetInfiniteINRequests(); + + /* Set the flag indicating that the data IN pipe has been found */ + FoundEndpoints |= (1 << PRINTER_DATA_IN_PIPE); + } + else + { + /* Configure the data OUT pipe */ + Pipe_ConfigurePipe(PRINTER_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT, + EndpointData->EndpointAddress, EndpointData->EndpointSize, + PIPE_BANK_SINGLE); + + /* Set the flag indicating that the data OUT pipe has been found */ + FoundEndpoints |= (1 << PRINTER_DATA_OUT_PIPE); + } + } + + /* Valid data found, return success */ + return SuccessfulConfigRead; +} + +uint8_t NextPrinterInterface(void* CurrentDescriptor) +{ + /* PURPOSE: Find next mass storage class interface descriptor */ + + if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) + { + /* Check the descriptor class and protocol, break out if correct class/protocol interface found */ + if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == PRINTER_CLASS) && + (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == PRINTER_SUBCLASS)) + { + return DESCRIPTOR_SEARCH_Found; + } + } + + return DESCRIPTOR_SEARCH_NotFound; +} + +uint8_t NextInterfaceBulkDataEndpoint(void* CurrentDescriptor) +{ + /* PURPOSE: Find next interface bulk endpoint descriptor before next interface descriptor */ + + if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint) + { + uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor, + USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK); + + /* Check the endpoint type, break out if correct BULK type endpoint found */ + if (EndpointType == EP_TYPE_BULK) + return DESCRIPTOR_SEARCH_Found; + } + else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface) + { + return DESCRIPTOR_SEARCH_Fail; + } + + return DESCRIPTOR_SEARCH_NotFound; +} -- cgit v1.2.3