USB Host Shield 2.0
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Usb.h
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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 /* USB functions */
18 #ifndef _usb_h_
19 #define _usb_h_
20 
21 
22 //#define BOARD_BLACK_WIDDOW
23 
24 
25 #define USB_METHODS_INLINE
26 
27 #include <inttypes.h>
28 
29 #include <assert.h>
30 
31 #include "avrpins.h"
32 #include "max3421e.h"
33 #include "usbhost.h"
34 #include "usb_ch9.h"
35 #include "address.h"
36 
37 #if defined(ARDUINO) && ARDUINO >=100
38 #include "Arduino.h"
39 #else
40 #include <WProgram.h>
41 #endif
42 
43 #include "printhex.h"
44 #include "hexdump.h"
45 #include "message.h"
46 
47 
48 /* shield pins. First parameter - SS pin, second parameter - INT pin */
49 
50 #if defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
51 #define BOARD_TEENSY_PLUS_PLUS
52 #endif
53 
54 #ifdef BOARD_BLACK_WIDDOW
55 typedef MAX3421e<P6, P3> MAX3421E; // Black Widow
56 #elif defined(BOARD_TEENSY_PLUS_PLUS)
57 typedef MAX3421e<P9, P8> MAX3421E; // Teensy++ 2.0 & 1.0
58 #elif defined(BOARD_MEGA_ADK)
59 typedef MAX3421e<P53, P54> MAX3421E; // Arduino Mega ADK
60 #elif defined(BOARD_BALANDUINO)
61 typedef MAX3421e<P20, P19> MAX3421E; // Balanduino
62 #else
63 typedef MAX3421e<P10, P9> MAX3421E; // Official Arduinos (UNO, Duemilanove, Mega, 2560, Leonardo etc.)
64 #endif
65 
66 //Debug macros. In 1.0 it is possible to move strings to PROGMEM by defining USBTRACE (Serial.print(F(s)))
67 #define USBTRACE(s) (Serial.print((s)))
68 #define USBTRACE2(s,r) (Serial.print((s)), Serial.println((r),HEX))
69 
70 
71 
72 /* Common setup data constant combinations */
73 #define bmREQ_GET_DESCR USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_DEVICE //get descriptor request type
74 #define bmREQ_SET USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_DEVICE //set request type for all but 'set feature' and 'set interface'
75 #define bmREQ_CL_GET_INTF USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE //get interface request type
76 
77 // D7 data transfer direction (0 - host-to-device, 1 - device-to-host)
78 // D6-5 Type (0- standard, 1 - class, 2 - vendor, 3 - reserved)
79 // D4-0 Recipient (0 - device, 1 - interface, 2 - endpoint, 3 - other, 4..31 - reserved)
80 
81 // USB Device Classes
82 #define USB_CLASS_USE_CLASS_INFO 0x00 // Use Class Info in the Interface Descriptors
83 #define USB_CLASS_AUDIO 0x01 // Audio
84 #define USB_CLASS_COM_AND_CDC_CTRL 0x02 // Communications and CDC Control
85 #define USB_CLASS_HID 0x03 // HID
86 #define USB_CLASS_PHYSICAL 0x05 // Physical
87 #define USB_CLASS_IMAGE 0x06 // Image
88 #define USB_CLASS_PRINTER 0x07 // Printer
89 #define USB_CLASS_MASS_STORAGE 0x08 // Mass Storage
90 #define USB_CLASS_HUB 0x09 // Hub
91 #define USB_CLASS_CDC_DATA 0x0a // CDC-Data
92 #define USB_CLASS_SMART_CARD 0x0b // Smart-Card
93 #define USB_CLASS_CONTENT_SECURITY 0x0d // Content Security
94 #define USB_CLASS_VIDEO 0x0e // Video
95 #define USB_CLASS_PERSONAL_HEALTH 0x0f // Personal Healthcare
96 #define USB_CLASS_DIAGNOSTIC_DEVICE 0xdc // Diagnostic Device
97 #define USB_CLASS_WIRELESS_CTRL 0xe0 // Wireless Controller
98 #define USB_CLASS_MISC 0xef // Miscellaneous
99 #define USB_CLASS_APP_SPECIFIC 0xfe // Application Specific
100 #define USB_CLASS_VENDOR_SPECIFIC 0xff // Vendor Specific
101 
102 // Additional Error Codes
103 #define USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED 0xD1
104 #define USB_DEV_CONFIG_ERROR_DEVICE_INIT_INCOMPLETE 0xD2
105 #define USB_ERROR_UNABLE_TO_REGISTER_DEVICE_CLASS 0xD3
106 #define USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL 0xD4
107 #define USB_ERROR_HUB_ADDRESS_OVERFLOW 0xD5
108 #define USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL 0xD6
109 #define USB_ERROR_EPINFO_IS_NULL 0xD7
110 #define USB_ERROR_INVALID_ARGUMENT 0xD8
111 #define USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE 0xD9
112 #define USB_ERROR_INVALID_MAX_PKT_SIZE 0xDA
113 #define USB_ERROR_EP_NOT_FOUND_IN_TBL 0xDB
114 #define USB_ERROR_TRANSFER_TIMEOUT 0xFF
115 
116 class USBDeviceConfig
117 {
118 public:
119  virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed) = 0;
120  virtual uint8_t Release() = 0;
121  virtual uint8_t Poll() = 0;
122  virtual uint8_t GetAddress() = 0;
123 };
124 
125 #define USB_XFER_TIMEOUT 5000 //USB transfer timeout in milliseconds, per section 9.2.6.1 of USB 2.0 spec
126 //#define USB_NAK_LIMIT 32000 //NAK limit for a transfer. 0 means NAKs are not counted
127 #define USB_RETRY_LIMIT 3 //retry limit for a transfer
128 #define USB_SETTLE_DELAY 200 //settle delay in milliseconds
129 
130 #define USB_NUMDEVICES 16 //number of USB devices
131 //#define HUB_MAX_HUBS 7 // maximum number of hubs that can be attached to the host controller
132 #define HUB_PORT_RESET_DELAY 20 // hub port reset delay 10 ms recomended, can be up to 20 ms
133 
134 /* USB state machine states */
135 #define USB_STATE_MASK 0xf0
136 
137 #define USB_STATE_DETACHED 0x10
138 #define USB_DETACHED_SUBSTATE_INITIALIZE 0x11
139 #define USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE 0x12
140 #define USB_DETACHED_SUBSTATE_ILLEGAL 0x13
141 #define USB_ATTACHED_SUBSTATE_SETTLE 0x20
142 #define USB_ATTACHED_SUBSTATE_RESET_DEVICE 0x30
143 #define USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE 0x40
144 #define USB_ATTACHED_SUBSTATE_WAIT_SOF 0x50
145 #define USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE 0x60
146 #define USB_STATE_ADDRESSING 0x70
147 #define USB_STATE_CONFIGURING 0x80
148 #define USB_STATE_RUNNING 0x90
149 #define USB_STATE_ERROR 0xa0
150 
151 /* USB Setup Packet Structure */
152 typedef struct {
153  union { // offset description
154  uint8_t bmRequestType; // 0 Bit-map of request type
155  struct {
156  uint8_t recipient: 5; // Recipient of the request
157  uint8_t type: 2; // Type of request
158  uint8_t direction: 1; // Direction of data X-fer
159  };
160  }ReqType_u;
161  uint8_t bRequest; // 1 Request
162  union {
163  uint16_t wValue; // 2 Depends on bRequest
164  struct {
165  uint8_t wValueLo;
166  uint8_t wValueHi;
167  };
168  }wVal_u;
169  uint16_t wIndex; // 4 Depends on bRequest
170  uint16_t wLength; // 6 Depends on bRequest
171 } SETUP_PKT, *PSETUP_PKT;
172 
173 
174 
175 // Base class for incomming data parser
176 class USBReadParser
177 {
178 public:
179  virtual void Parse(const uint16_t len, const uint8_t *pbuf, const uint16_t &offset) = 0;
180 };
181 
182 
183 class USB : public MAX3421E
184 {
185  AddressPoolImpl<USB_NUMDEVICES> addrPool;
186  USBDeviceConfig* devConfig[USB_NUMDEVICES];
187  uint8_t devConfigIndex;
188  uint8_t bmHubPre;
189 
190  public:
191  USB( void );
192 
193  void SetHubPreMask() { bmHubPre |= bmHUBPRE; };
194  void ResetHubPreMask() { bmHubPre &= (~bmHUBPRE); };
195 
196  AddressPool& GetAddressPool()
197  {
198  return (AddressPool&)addrPool;
199  };
200  uint8_t RegisterDeviceClass(USBDeviceConfig *pdev)
201  {
202  for (uint8_t i=0; i<USB_NUMDEVICES; i++)
203  {
204  if (!devConfig[i])
205  {
206  devConfig[i] = pdev;
207  return 0;
208  }
209  }
210  return USB_ERROR_UNABLE_TO_REGISTER_DEVICE_CLASS;
211  };
212  void ForEachUsbDevice(UsbDeviceHandleFunc pfunc)
213  {
214  addrPool.ForEachUsbDevice(pfunc);
215  };
216  uint8_t getUsbTaskState( void );
217  void setUsbTaskState( uint8_t state );
218 
219  EpInfo* getEpInfoEntry( uint8_t addr, uint8_t ep );
220  uint8_t setEpInfoEntry( uint8_t addr, uint8_t epcount, EpInfo* eprecord_ptr );
221 
222  //uint8_t ctrlReq( uint8_t addr, uint8_t ep, uint8_t bmReqType, uint8_t bRequest, uint8_t wValLo, uint8_t wValHi, uint16_t wInd, uint16_t nbytes, uint8_t* dataptr);
223 
224  /* Control requests */
225  uint8_t getDevDescr( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t* dataptr );
226  uint8_t getConfDescr( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t conf, uint8_t* dataptr );
227 
228  uint8_t getConfDescr( uint8_t addr, uint8_t ep, uint8_t conf, USBReadParser *p );
229 
230  uint8_t getStrDescr( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t index, uint16_t langid, uint8_t* dataptr );
231  uint8_t setAddr( uint8_t oldaddr, uint8_t ep, uint8_t newaddr );
232  uint8_t setConf( uint8_t addr, uint8_t ep, uint8_t conf_value );
233 
234  uint8_t ctrlData( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t* dataptr, boolean direction );
235  uint8_t ctrlStatus( uint8_t ep, boolean direction, uint16_t nak_limit );
236  uint8_t inTransfer( uint8_t addr, uint8_t ep, uint16_t *nbytesptr, uint8_t* data );
237  uint8_t outTransfer( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t* data );
238  uint8_t dispatchPkt( uint8_t token, uint8_t ep, uint16_t nak_limit );
239 
240  void Task( void );
241 
242  uint8_t DefaultAddressing(uint8_t parent, uint8_t port, bool lowspeed);
243  uint8_t Configuring(uint8_t parent, uint8_t port, bool lowspeed);
244  uint8_t ReleaseDevice(uint8_t addr);
245 
246  uint8_t ctrlReq( uint8_t addr, uint8_t ep, uint8_t bmReqType, uint8_t bRequest, uint8_t wValLo, uint8_t wValHi,
247  uint16_t wInd, uint16_t total, uint16_t nbytes, uint8_t* dataptr, USBReadParser *p);
248 
249  private:
250  void init();
251  uint8_t SetAddress(uint8_t addr, uint8_t ep, EpInfo **ppep, uint16_t &nak_limit);
252  uint8_t OutTransfer(EpInfo *pep, uint16_t nak_limit, uint16_t nbytes, uint8_t *data);
253  uint8_t InTransfer (EpInfo *pep, uint16_t nak_limit, uint16_t *nbytesptr, uint8_t *data);
254 };
255 
256 #if 0 //defined(USB_METHODS_INLINE)
257 //get device descriptor
258 inline uint8_t USB::getDevDescr( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t* dataptr )
259 {
260  return( ctrlReq( addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, 0x00, USB_DESCRIPTOR_DEVICE, 0x0000, nbytes, dataptr ));
261 }
262 //get configuration descriptor
263 inline uint8_t USB::getConfDescr( uint8_t addr, uint8_t ep, uint16_t nbytes, uint8_t conf, uint8_t* dataptr )
264 {
265  return( ctrlReq( addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, conf, USB_DESCRIPTOR_CONFIGURATION, 0x0000, nbytes, dataptr ));
266 }
267 //get string descriptor
268 inline uint8_t USB::getStrDescr( uint8_t addr, uint8_t ep, uint16_t nuint8_ts, uint8_t index, uint16_t langid, uint8_t* dataptr )
269 {
270  return( ctrlReq( addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, index, USB_DESCRIPTOR_STRING, langid, nuint8_ts, dataptr ));
271 }
272 //set address
273 inline uint8_t USB::setAddr( uint8_t oldaddr, uint8_t ep, uint8_t newaddr )
274 {
275  return( ctrlReq( oldaddr, ep, bmREQ_SET, USB_REQUEST_SET_ADDRESS, newaddr, 0x00, 0x0000, 0x0000, NULL ));
276 }
277 //set configuration
278 inline uint8_t USB::setConf( uint8_t addr, uint8_t ep, uint8_t conf_value )
279 {
280  return( ctrlReq( addr, ep, bmREQ_SET, USB_REQUEST_SET_CONFIGURATION, conf_value, 0x00, 0x0000, 0x0000, NULL ));
281 }
282 
283 #endif // defined(USB_METHODS_INLINE)
284 
285 #endif //_usb_h_
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