189 lines
7.2 KiB
C
189 lines
7.2 KiB
C
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/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
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This software may be distributed and modified under the terms of the GNU
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General Public License version 2 (GPL2) as published by the Free Software
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Foundation and appearing in the file GPL2.TXT included in the packaging of
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this file. Please note that GPL2 Section 2[b] requires that all works based
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on this software must also be made publicly available under the terms of
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the GPL2 ("Copyleft").
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Contact information
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-------------------
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Circuits At Home, LTD
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Web : http://www.circuitsathome.com
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e-mail : support@circuitsathome.com
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*/
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#if !defined(__HID_H__)
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#define __HID_H__
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#include "Usb.h"
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#include "hidusagestr.h"
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#define MAX_REPORT_PARSERS 2
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#define HID_MAX_HID_CLASS_DESCRIPTORS 5
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#define DATA_SIZE_MASK 0x03
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#define TYPE_MASK 0x0C
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#define TAG_MASK 0xF0
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#define DATA_SIZE_0 0x00
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#define DATA_SIZE_1 0x01
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#define DATA_SIZE_2 0x02
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#define DATA_SIZE_4 0x03
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#define TYPE_MAIN 0x00
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#define TYPE_GLOBAL 0x04
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#define TYPE_LOCAL 0x08
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#define TAG_MAIN_INPUT 0x80
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#define TAG_MAIN_OUTPUT 0x90
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#define TAG_MAIN_COLLECTION 0xA0
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#define TAG_MAIN_FEATURE 0xB0
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#define TAG_MAIN_ENDCOLLECTION 0xC0
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#define TAG_GLOBAL_USAGEPAGE 0x00
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#define TAG_GLOBAL_LOGICALMIN 0x10
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#define TAG_GLOBAL_LOGICALMAX 0x20
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#define TAG_GLOBAL_PHYSMIN 0x30
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#define TAG_GLOBAL_PHYSMAX 0x40
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#define TAG_GLOBAL_UNITEXP 0x50
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#define TAG_GLOBAL_UNIT 0x60
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#define TAG_GLOBAL_REPORTSIZE 0x70
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#define TAG_GLOBAL_REPORTID 0x80
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#define TAG_GLOBAL_REPORTCOUNT 0x90
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#define TAG_GLOBAL_PUSH 0xA0
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#define TAG_GLOBAL_POP 0xB0
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#define TAG_LOCAL_USAGE 0x00
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#define TAG_LOCAL_USAGEMIN 0x10
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#define TAG_LOCAL_USAGEMAX 0x20
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/* HID requests */
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#define bmREQ_HID_OUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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#define bmREQ_HID_IN USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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#define bmREQ_HID_REPORT USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_INTERFACE
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/* HID constants. Not part of chapter 9 */
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/* Class-Specific Requests */
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#define HID_REQUEST_GET_REPORT 0x01
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#define HID_REQUEST_GET_IDLE 0x02
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#define HID_REQUEST_GET_PROTOCOL 0x03
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#define HID_REQUEST_SET_REPORT 0x09
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#define HID_REQUEST_SET_IDLE 0x0A
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#define HID_REQUEST_SET_PROTOCOL 0x0B
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/* Class Descriptor Types */
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#define HID_DESCRIPTOR_HID 0x21
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#define HID_DESCRIPTOR_REPORT 0x22
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#define HID_DESRIPTOR_PHY 0x23
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/* Protocol Selection */
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#define HID_BOOT_PROTOCOL 0x00
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#define HID_RPT_PROTOCOL 0x01
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/* HID Interface Class Code */
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#define HID_INTF 0x03
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/* HID Interface Class SubClass Codes */
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#define HID_BOOT_INTF_SUBCLASS 0x01
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/* HID Interface Class Protocol Codes */
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#define HID_PROTOCOL_NONE 0x00
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#define HID_PROTOCOL_KEYBOARD 0x01
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#define HID_PROTOCOL_MOUSE 0x02
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#define HID_ITEM_TYPE_MAIN 0
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#define HID_ITEM_TYPE_GLOBAL 1
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#define HID_ITEM_TYPE_LOCAL 2
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#define HID_ITEM_TYPE_RESERVED 3
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#define HID_LONG_ITEM_PREFIX 0xfe // Long item prefix value
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#define bmHID_MAIN_ITEM_TAG 0xfc // Main item tag mask
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#define bmHID_MAIN_ITEM_INPUT 0x80 // Main item Input tag value
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#define bmHID_MAIN_ITEM_OUTPUT 0x90 // Main item Output tag value
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#define bmHID_MAIN_ITEM_FEATURE 0xb0 // Main item Feature tag value
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#define bmHID_MAIN_ITEM_COLLECTION 0xa0 // Main item Collection tag value
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#define bmHID_MAIN_ITEM_END_COLLECTION 0xce // Main item End Collection tag value
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#define HID_MAIN_ITEM_COLLECTION_PHYSICAL 0
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#define HID_MAIN_ITEM_COLLECTION_APPLICATION 1
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#define HID_MAIN_ITEM_COLLECTION_LOGICAL 2
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#define HID_MAIN_ITEM_COLLECTION_REPORT 3
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#define HID_MAIN_ITEM_COLLECTION_NAMED_ARRAY 4
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#define HID_MAIN_ITEM_COLLECTION_USAGE_SWITCH 5
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#define HID_MAIN_ITEM_COLLECTION_USAGE_MODIFIER 6
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struct HidItemPrefix {
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uint8_t bSize : 2;
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uint8_t bType : 2;
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uint8_t bTag : 4;
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};
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struct MainItemIOFeature {
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uint8_t bmIsConstantOrData : 1;
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uint8_t bmIsArrayOrVariable : 1;
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uint8_t bmIsRelativeOrAbsolute : 1;
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uint8_t bmIsWrapOrNoWrap : 1;
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uint8_t bmIsNonLonearOrLinear : 1;
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uint8_t bmIsNoPreferedOrPrefered : 1;
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uint8_t bmIsNullOrNoNull : 1;
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uint8_t bmIsVolatileOrNonVolatile : 1;
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};
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class HID;
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class HIDReportParser {
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public:
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virtual void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf) = 0;
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};
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class HID : public USBDeviceConfig, public UsbConfigXtracter {
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protected:
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USB *pUsb; // USB class instance pointer
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uint8_t bAddress; // address
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protected:
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static const uint8_t epInterruptInIndex = 1; // InterruptIN endpoint index
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static const uint8_t epInterruptOutIndex = 2; // InterruptOUT endpoint index
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static const uint8_t maxHidInterfaces = 3;
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static const uint8_t maxEpPerInterface = 2;
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static const uint8_t totalEndpoints = (maxHidInterfaces * maxEpPerInterface + 1);
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void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
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void PrintHidDescriptor(const USB_HID_DESCRIPTOR *pDesc);
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virtual HIDReportParser* GetReportParser(uint8_t id) {
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return NULL;
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};
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public:
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HID(USB *pusb) : pUsb(pusb) {
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};
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const USB* GetUsb() {
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return pUsb;
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};
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virtual bool SetReportParser(uint8_t id, HIDReportParser *prs) {
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return false;
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};
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uint8_t SetProtocol(uint8_t iface, uint8_t protocol);
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uint8_t GetProtocol(uint8_t iface, uint8_t* dataptr);
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uint8_t GetIdle(uint8_t iface, uint8_t reportID, uint8_t* dataptr);
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uint8_t SetIdle(uint8_t iface, uint8_t reportID, uint8_t duration);
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uint8_t GetReportDescr(uint16_t wIndex, USBReadParser *parser = NULL);
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uint8_t GetHidDescr(uint8_t ep, uint16_t nbytes, uint8_t* dataptr);
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uint8_t GetReport(uint8_t ep, uint8_t iface, uint8_t report_type, uint8_t report_id, uint16_t nbytes, uint8_t* dataptr);
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uint8_t SetReport(uint8_t ep, uint8_t iface, uint8_t report_type, uint8_t report_id, uint16_t nbytes, uint8_t* dataptr);
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};
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#endif // __HID_H__
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