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Diffstat (limited to 'Demos/OTG/TestApp/Descriptors.c')
| -rw-r--r-- | Demos/OTG/TestApp/Descriptors.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/Demos/OTG/TestApp/Descriptors.c b/Demos/OTG/TestApp/Descriptors.c new file mode 100644 index 000000000..fc56660be --- /dev/null +++ b/Demos/OTG/TestApp/Descriptors.c @@ -0,0 +1,187 @@ +/*
+ 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.
+*/
+
+/** \file
+ *
+ * USB Device Descriptors, for library use when in USB device mode. Descriptors are special
+ * computer-readable structures which the host requests upon device enumeration, to determine
+ * the device's capabilities and functions.
+ */
+
+#include "Descriptors.h"
+
+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
+ * device characteristics, including the supported USB version, control endpoint size and the
+ * number of device configurations. The descriptor is read out by the USB host when the enumeration
+ * process begins.
+ */
+USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
+{
+ Header: {Size: sizeof(USB_Descriptor_Device_t), Type: DTYPE_Device},
+
+ USBSpecification: VERSION_BCD(01.10),
+ Class: 0x00,
+ SubClass: 0x00,
+ Protocol: 0x00,
+
+ Endpoint0Size: 8,
+
+ VendorID: 0x03EB,
+ ProductID: 0x2040,
+ ReleaseNumber: 0x0000,
+
+ ManufacturerStrIndex: 0x01,
+ ProductStrIndex: 0x02,
+ SerialNumStrIndex: NO_DESCRIPTOR,
+
+ NumberOfConfigurations: 1
+};
+
+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
+ * of the device in one of its supported configurations, including information about any device interfaces
+ * and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
+ * a configuration so that the host may correctly communicate with the USB device.
+ */
+USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
+{
+ Config:
+ {
+ Header: {Size: sizeof(USB_Descriptor_Configuration_Header_t), Type: DTYPE_Configuration},
+
+ TotalConfigurationSize: ( sizeof(USB_Descriptor_Configuration_Header_t)
+ + sizeof(USB_Descriptor_Interface_t) ),
+
+ TotalInterfaces: 1,
+
+ ConfigurationNumber: 1,
+ ConfigurationStrIndex: NO_DESCRIPTOR,
+
+ ConfigAttributes: (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),
+
+ MaxPowerConsumption: USB_CONFIG_POWER_MA(100)
+ },
+
+ Interface:
+ {
+ Header: {Size: sizeof(USB_Descriptor_Interface_t), Type: DTYPE_Interface},
+
+ InterfaceNumber: 1,
+ AlternateSetting: 0,
+
+ TotalEndpoints: 0,
+
+ Class: 0xFF,
+ SubClass: 0x00,
+ Protocol: 0x00,
+
+ InterfaceStrIndex: NO_DESCRIPTOR
+ },
+};
+
+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
+ * the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
+ * via the language ID table available at USB.org what languages the device supports for its string descriptors.
+ */
+USB_Descriptor_String_t PROGMEM LanguageString =
+{
+ Header: {Size: USB_STRING_LEN(1), Type: DTYPE_String},
+
+ UnicodeString: {LANGUAGE_ID_ENG}
+};
+
+/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
+ * form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ * Descriptor.
+ */
+USB_Descriptor_String_t PROGMEM ManufacturerString =
+{
+ Header: {Size: USB_STRING_LEN(11), Type: DTYPE_String},
+
+ UnicodeString: L"Dean Camera"
+};
+
+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
+ * and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ * Descriptor.
+ */
+USB_Descriptor_String_t PROGMEM ProductString =
+{
+ Header: {Size: USB_STRING_LEN(9), Type: DTYPE_String},
+
+ UnicodeString: L"LUFA Demo"
+};
+
+/** This function is called by the library when in device mode, and must be overridden (see StdDescriptors.h
+ * documentation) by the application code so that the address and size of a requested descriptor can be given
+ * to the USB library. When the device recieves a Get Descriptor request on the control endpoint, this function
+ * is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
+ * USB host.
+ */
+uint16_t USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
+{
+ const uint8_t DescriptorType = (wValue >> 8);
+ const uint8_t DescriptorNumber = (wValue & 0xFF);
+
+ void* Address = NULL;
+ uint16_t Size = NO_DESCRIPTOR;
+
+ switch (DescriptorType)
+ {
+ case DTYPE_Device:
+ Address = DESCRIPTOR_ADDRESS(DeviceDescriptor);
+ Size = sizeof(USB_Descriptor_Device_t);
+ break;
+ case DTYPE_Configuration:
+ Address = DESCRIPTOR_ADDRESS(ConfigurationDescriptor);
+ Size = sizeof(USB_Descriptor_Configuration_t);
+ break;
+ case DTYPE_String:
+ switch (DescriptorNumber)
+ {
+ case 0x00:
+ Address = DESCRIPTOR_ADDRESS(LanguageString);
+ Size = pgm_read_byte(&LanguageString.Header.Size);
+ break;
+ case 0x01:
+ Address = DESCRIPTOR_ADDRESS(ManufacturerString);
+ Size = pgm_read_byte(&ManufacturerString.Header.Size);
+ break;
+ case 0x02:
+ Address = DESCRIPTOR_ADDRESS(ProductString);
+ Size = pgm_read_byte(&ProductString.Header.Size);
+ break;
+ }
+
+ break;
+ }
+
+ *DescriptorAddress = Address;
+ return Size;
+}
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