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Descriptors.c
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/***********************************************************/
/* ____ ___ _ _ ___ ___ ____ _ */
/* | _ \_ _| | | |_ _/ _ \ / ___| | ___ _ __ ___ */
/* | |_) | || | | || | | | | | | | |/ _ \| '_ \ / _ \ */
/* | __/| || |_| || | |_| | | |___| | (_) | | | | __/ */
/* |_| |___|\___/|___\___/ \____|_|\___/|_| |_|\___| */
/* */
/* By: Lucas Teske (USB-ON-AT90USBXXX BY CKDUR) */
/***********************************************************/
/* Basicly this is an PIUIO Clone with an ATMEGA8U2 and */
/* serial from ATMEGA328 interfaced on ARDUINO UNO */
/***********************************************************/
/* This is the USB Configuration part */
/***********************************************************/
/* License is WHAT? */
/* Please consult https://github.com/racerxdl/piuio_clone */
/***********************************************************/
/** \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.
*/
const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
{
// CKDUR: All "Device Description" is here
.Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
.USBSpecification = VERSION_BCD(1,0,0),
.Class = 0xFF, // RACERXL: 0xFF is a vendor-specifc class. Thats what we want
.SubClass = 0x00,
.Protocol = 0x00,
.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE, // CKDUR: Was FIXED_CONTROL_ENDPOINT_SIZE = 8
.VendorID = 0x0547, // PIUIO Vendor ID. Cypress 0x547
.ProductID = 0x1002, // PIUIO Product ID. FX-USB 0x1002
.ReleaseNumber = VERSION_BCD(1,0,0), // 0.0.1 :(
.ManufacturerStrIndex = STRING_ID_Manufacturer,
.ProductStrIndex = STRING_ID_Product,
.SerialNumStrIndex = NO_DESCRIPTOR,
.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
};
/** 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.
*/
// RACERXL:
/* --------------------------- Functional Range ---------------------------- */
const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
.Config =
{
.Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
.TotalInterfaces = 1,
.ConfigurationNumber = 1,
.ConfigurationStrIndex = NO_DESCRIPTOR,
// RACERXL: PIUIO does have own power supply. But I dont like that lol, so mine is just USB powered.
.ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
// RACERXL: This is the value in mA, it will be divided by two (100 mean 50mA). Its just an info for PC
.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
},
.HID_Interface =
{
.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
.InterfaceNumber = INTERFACE_ID_PIUIO,
.AlternateSetting = 0x00,
// RACERXL: We dont need any additional entry points, so this will be 0 CKDUR:1?
.TotalEndpoints = 0,
// CKDUR: The interface didn't have nothing
.Class = 0x00,
.SubClass = 0x00,
.Protocol = 0x00,
.InterfaceStrIndex = NO_DESCRIPTOR
},
// CKDUR: We don't need HID! God! D:
};
/** 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.
*/
const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(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.
*/
const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"CKDUR"); // CKDUR: By me
/** 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.
*/
const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"PIUIO"); // CKDUR: Remember maybe we can name it FX-USB
/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
* 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 receives 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 CALLBACK_USB_GetDescriptor(const uint16_t wValue,
const uint16_t wIndex,
const void** const DescriptorAddress)
{
const uint8_t DescriptorType = (wValue >> 8);
const uint8_t DescriptorNumber = (wValue & 0xFF);
const void* Address = NULL;
uint16_t Size = NO_DESCRIPTOR;
switch (DescriptorType)
{
case DTYPE_Device:
Address = &DeviceDescriptor;
Size = sizeof(USB_Descriptor_Device_t);
break;
case DTYPE_Configuration:
Address = &ConfigurationDescriptor;
Size = sizeof(USB_Descriptor_Configuration_t);
break;
case DTYPE_String:
switch (DescriptorNumber)
{
case STRING_ID_Language:
Address = &LanguageString;
Size = pgm_read_byte(&LanguageString.Header.Size);
break;
case STRING_ID_Manufacturer:
Address = &ManufacturerString;
Size = pgm_read_byte(&ManufacturerString.Header.Size);
break;
case STRING_ID_Product:
Address = &ProductString;
Size = pgm_read_byte(&ProductString.Header.Size);
break;
}
break;
}
*DescriptorAddress = Address;
return Size;
}