tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/hiduniversal.h

   1 /* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
   2
   3 This software may be distributed and modified under the terms of the GNU
   4 General Public License version 2 (GPL2) as published by the Free Software
   5 Foundation and appearing in the file GPL2.TXT included in the packaging of
   6 this file. Please note that GPL2 Section 2[b] requires that all works based
   7 on this software must also be made publicly available under the terms of
   8 the GPL2 ("Copyleft").
   9
  10 Contact information
  11 -------------------
  12
  13 Circuits At Home, LTD
  14 Web      :  http://www.circuitsathome.com
  15 e-mail   :  support@circuitsathome.com
  16  */
  17
  18 #if !defined(__HIDUNIVERSAL_H__)
  19 #define __HIDUNIVERSAL_H__
  20
  21 #include "hid.h"
  22 //#include "hidescriptorparser.h"
  23
  24 class HIDUniversal : public HID {
  25
  26         struct ReportParser {
  27                 uint8_t rptId;
  28                 HIDReportParser *rptParser;
  29         } rptParsers[MAX_REPORT_PARSERS];
  30
  31         // HID class specific descriptor type and length info obtained from HID descriptor
  32         HID_CLASS_DESCRIPTOR_LEN_AND_TYPE descrInfo[HID_MAX_HID_CLASS_DESCRIPTORS];
  33
  34         // Returns HID class specific descriptor length by its type and order number
  35         uint16_t GetHidClassDescrLen(uint8_t type, uint8_t num);
  36
  37         struct HIDInterface {
  38                 struct {
  39                         uint8_t bmInterface : 3;
  40                         uint8_t bmAltSet : 3;
  41                         uint8_t bmProtocol : 2;
  42                 };
  43                 uint8_t epIndex[maxEpPerInterface];
  44         };
  45
  46         uint8_t bConfNum; // configuration number
  47         uint8_t bNumIface; // number of interfaces in the configuration
  48         uint8_t bNumEP; // total number of EP in the configuration
  49         uint32_t qNextPollTime; // next poll time
  50         uint8_t pollInterval;
  51         bool bPollEnable; // poll enable flag
  52
  53         static const uint16_t constBuffLen = 64; // event buffer length
  54         uint8_t prevBuf[constBuffLen]; // previous event buffer
  55
  56         void Initialize();
  57         HIDInterface* FindInterface(uint8_t iface, uint8_t alt, uint8_t proto);
  58
  59         void ZeroMemory(uint8_t len, uint8_t *buf);
  60         bool BuffersIdentical(uint8_t len, uint8_t *buf1, uint8_t *buf2);
  61         void SaveBuffer(uint8_t len, uint8_t *src, uint8_t *dest);
  62
  63 protected:
  64         EpInfo epInfo[totalEndpoints];
  65         HIDInterface hidInterfaces[maxHidInterfaces];
  66
  67         bool bHasReportId;
  68
  69         uint16_t PID, VID; // PID and VID of connected device
  70
  71         // HID implementation
  72         HIDReportParser* GetReportParser(uint8_t id);
  73
  74         virtual uint8_t OnInitSuccessful() {
  75                 return 0;
  76         };
  77
  78         virtual void ParseHIDData(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf) {
  79                 return;
  80         };
  81
  82 public:
  83         HIDUniversal(USB *p);
  84
  85         // HID implementation
  86         bool SetReportParser(uint8_t id, HIDReportParser *prs);
  87
  88         // USBDeviceConfig implementation
  89         uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
  90         uint8_t Release();
  91         uint8_t Poll();
  92
  93         virtual uint8_t GetAddress() {
  94                 return bAddress;
  95         };
  96
  97         virtual bool isReady() {
  98                 return bPollEnable;
  99         };
 100
 101         // UsbConfigXtracter implementation
 102         void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
 103
 104         // Send report - do not mix with SetReport()!
 105         uint8_t SndRpt(uint16_t nbytes, uint8_t *dataptr);
 106 };
 107
 108 #endif // __HIDUNIVERSAL_H__