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@ -1,48 +1,69 @@ |
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/* |
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LUFA Library |
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Copyright (C) Dean Camera, 2021. |
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/*************************************************************************** |
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* Copyright (C) 02/2021 by Olaf Rempel * |
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* razzor@kopf-tisch.de * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; version 2 of the License, * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the * |
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* Free Software Foundation, Inc., * |
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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***************************************************************************/ |
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#include <avr/pgmspace.h> |
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#include <LUFA/Drivers/USB/USB.h> |
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dean [at] fourwalledcubicle [dot] com |
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www.lufa-lib.org |
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*/ |
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#include "event.h" |
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#include "ledfade.h" |
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#include "pwm.h" |
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#include "usbcdc.h" |
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/* |
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Copyright 2021 Dean Camera (dean [at] fourwalledcubicle [dot] com) |
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Permission to use, copy, modify, distribute, and sell this |
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software and its documentation for any purpose is hereby granted |
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without fee, provided that the above copyright notice appear in |
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all copies and that both that the copyright notice and this |
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permission notice and warranty disclaimer appear in supporting |
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documentation, and that the name of the author not be used in |
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advertising or publicity pertaining to distribution of the |
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software without specific, written prior permission. |
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The author disclaims all warranties with regard to this |
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software, including all implied warranties of merchantability |
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and fitness. In no event shall the author be liable for any |
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special, indirect or consequential damages or any damages |
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whatsoever resulting from loss of use, data or profits, whether |
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in an action of contract, negligence or other tortious action, |
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arising out of or in connection with the use or performance of |
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this software. |
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*/ |
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/* *********************************************************************** */ |
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#define CDC_NOTIFICATION_EPADDR (ENDPOINT_DIR_IN | 2) |
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#define CDC_TX_EPADDR (ENDPOINT_DIR_IN | 3) |
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#define CDC_RX_EPADDR (ENDPOINT_DIR_OUT | 4) |
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#define CDC_NOTIFICATION_EPSIZE 8 |
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#define CDC_TXRX_EPSIZE 16 |
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typedef struct |
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{ |
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USB_Descriptor_Configuration_Header_t Config; |
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// CDC Control Interface |
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USB_Descriptor_Interface_t CDC_CCI_Interface; |
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USB_CDC_Descriptor_FunctionalHeader_t CDC_Functional_Header; |
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USB_CDC_Descriptor_FunctionalACM_t CDC_Functional_ACM; |
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USB_CDC_Descriptor_FunctionalUnion_t CDC_Functional_Union; |
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USB_Descriptor_Endpoint_t CDC_NotificationEndpoint; |
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/** \file |
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* |
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* USB Device Descriptors, for library use when in USB device mode. Descriptors are special |
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* computer-readable structures which the host requests upon device enumeration, to determine |
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* the device's capabilities and functions. |
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*/ |
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// CDC Data Interface |
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USB_Descriptor_Interface_t CDC_DCI_Interface; |
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USB_Descriptor_Endpoint_t CDC_DataOutEndpoint; |
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USB_Descriptor_Endpoint_t CDC_DataInEndpoint; |
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} USB_Descriptor_Configuration_t; |
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#include "Descriptors.h" |
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enum InterfaceDescriptors_t |
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{ |
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INTERFACE_ID_CDC_CCI = 0, |
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INTERFACE_ID_CDC_DCI = 1, |
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}; |
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enum StringDescriptors_t |
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{ |
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STRING_ID_Language = 0, |
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STRING_ID_Manufacturer = 1, |
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STRING_ID_Product = 2, |
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}; |
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/* *********************************************************************** */ |
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/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall |
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* device characteristics, including the supported USB version, control endpoint size and the |
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* number of device configurations. The descriptor is read out by the USB host when the enumeration |
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* process begins. |
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*/ |
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const USB_Descriptor_Device_t PROGMEM DeviceDescriptor = |
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{ |
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.Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device}, |
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@ -60,11 +81,6 @@ const USB_Descriptor_Device_t PROGMEM DeviceDescriptor = |
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.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS |
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}; |
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/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage |
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* of the device in one of its supported configurations, including information about any device interfaces |
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* and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting |
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* a configuration so that the host may correctly communicate with the USB device. |
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*/ |
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const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor = |
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{ |
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.Config = |
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@ -152,36 +168,16 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor = |
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} |
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}; |
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/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests |
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* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate |
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* via the language ID table available at USB.org what languages the device supports for its string descriptors. |
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*/ |
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const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG); |
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/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable |
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* form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device |
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* Descriptor. |
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*/ |
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const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"LUFA Library"); |
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/** Product descriptor string. This is a Unicode string containing the product's details in human readable form, |
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* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device |
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* Descriptor. |
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*/ |
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const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA CDC Demo"); |
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/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors" |
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* documentation) by the application code so that the address and size of a requested descriptor can be given |
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* to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function |
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* is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the |
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* USB host. |
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*/ |
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uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, |
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const uint16_t wIndex, |
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const void** const DescriptorAddress) |
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{ |
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const uint8_t DescriptorType = (wValue >> 8); |
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const uint8_t DescriptorNumber = (wValue & 0xFF); |
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const uint8_t DescriptorType = (wValue >> 8); |
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const uint8_t DescriptorNumber = (wValue & 0xFF); |
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const void* Address = NULL; |
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uint16_t Size = NO_DESCRIPTOR; |
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@ -192,10 +188,12 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, |
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Address = &DeviceDescriptor; |
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Size = sizeof(USB_Descriptor_Device_t); |
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break; |
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case DTYPE_Configuration: |
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Address = &ConfigurationDescriptor; |
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Size = sizeof(USB_Descriptor_Configuration_t); |
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break; |
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case DTYPE_String: |
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switch (DescriptorNumber) |
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{ |
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@ -203,16 +201,17 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, |
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Address = &LanguageString; |
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Size = pgm_read_byte(&LanguageString.Header.Size); |
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break; |
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case STRING_ID_Manufacturer: |
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Address = &ManufacturerString; |
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Size = pgm_read_byte(&ManufacturerString.Header.Size); |
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break; |
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case STRING_ID_Product: |
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Address = &ProductString; |
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Size = pgm_read_byte(&ProductString.Header.Size); |
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break; |
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} |
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break; |
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} |
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@ -220,3 +219,93 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, |
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return Size; |
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} |
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USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface = |
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{ |
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.Config = |
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{ |
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.ControlInterfaceNumber = INTERFACE_ID_CDC_CCI, |
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.DataINEndpoint = |
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{ |
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.Address = CDC_TX_EPADDR, |
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.Size = CDC_TXRX_EPSIZE, |
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.Banks = 1, |
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}, |
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.DataOUTEndpoint = |
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{ |
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.Address = CDC_RX_EPADDR, |
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.Size = CDC_TXRX_EPSIZE, |
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.Banks = 1, |
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}, |
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.NotificationEndpoint = |
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{ |
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.Address = CDC_NOTIFICATION_EPADDR, |
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.Size = CDC_NOTIFICATION_EPSIZE, |
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.Banks = 1, |
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}, |
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}, |
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}; |
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/* |
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void EVENT_USB_Device_Connect(void) |
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{ |
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} |
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void EVENT_USB_Device_Disconnect(void) |
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{ |
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} |
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*/ |
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void EVENT_USB_Device_ConfigurationChanged(void) |
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{ |
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CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface); |
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} |
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void EVENT_USB_Device_ControlRequest(void) |
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{ |
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CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface); |
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} |
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/* |
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void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) |
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{ |
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} |
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void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) |
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{ |
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} |
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*/ |
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void usbcdc_event_handler(event_entry_t * p_event) |
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{ |
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if ((p_event->type == EVENT_TYPE_LEDFADE_STATUS) && |
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(p_event->num == EVENT_NUM_LED_CH0) |
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) |
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{ |
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if (USB_DeviceState == DEVICE_STATE_Configured) |
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{ |
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CDC_Device_SendByte(&VirtualSerial_CDC_Interface, '!'); |
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} |
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} |
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} |
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void usbcdc_task(void) |
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{ |
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CDC_Device_USBTask(&VirtualSerial_CDC_Interface); |
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USB_USBTask(); |
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if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface)) |
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{ |
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uint8_t cmd = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface); |
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uint16_t value = 0; |
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if ((cmd >= '1') && (cmd <= '8')) |
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{ |
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value = ((cmd - '0') * 0x2000) -1; |
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} |
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event_queue(EVENT_TYPE_PWM_VALUE, |
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EVENT_NUM_PWM_CH2, |
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value); |
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} |
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} |
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void usbcdc_init(void) |
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{ |
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USB_Init(); |
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} |