Peter Cooper / Mbed 2 deprecated BlueUSB-new

Talking Touch Tablet added to device

Dependencies:   FATFileSystemv2 mbed

Fork of BlueUSB by Peter Barrett

USBHost.cpp@1:9d655061fa1e, 2012-10-30 (annotated)

Committer:
lolpcc
Date:
Tue Oct 30 11:42:47 2012 +0000
Revision:
1:9d655061fa1e
Parent:
0:606b230e5b4a 
Modified to work with the Talking Touch Tablet

Who changed what in which revision?

UserRevisionLine numberNew contents of line
peterbarrett1967 0:606b230e5b4a 1
peterbarrett1967 0:606b230e5b4a 2 /*
peterbarrett1967 0:606b230e5b4a 3 Copyright (c) 2010 Peter Barrett
peterbarrett1967 0:606b230e5b4a 4
peterbarrett1967 0:606b230e5b4a 5 Permission is hereby granted, free of charge, to any person obtaining a copy
peterbarrett1967 0:606b230e5b4a 6 of this software and associated documentation files (the "Software"), to deal
peterbarrett1967 0:606b230e5b4a 7 in the Software without restriction, including without limitation the rights
peterbarrett1967 0:606b230e5b4a 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
peterbarrett1967 0:606b230e5b4a 9 copies of the Software, and to permit persons to whom the Software is
peterbarrett1967 0:606b230e5b4a 10 furnished to do so, subject to the following conditions:
peterbarrett1967 0:606b230e5b4a 11
peterbarrett1967 0:606b230e5b4a 12 The above copyright notice and this permission notice shall be included in
peterbarrett1967 0:606b230e5b4a 13 all copies or substantial portions of the Software.
peterbarrett1967 0:606b230e5b4a 14
peterbarrett1967 0:606b230e5b4a 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
peterbarrett1967 0:606b230e5b4a 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
peterbarrett1967 0:606b230e5b4a 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
peterbarrett1967 0:606b230e5b4a 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
peterbarrett1967 0:606b230e5b4a 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
peterbarrett1967 0:606b230e5b4a 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
peterbarrett1967 0:606b230e5b4a 21 THE SOFTWARE.
peterbarrett1967 0:606b230e5b4a 22 */
peterbarrett1967 0:606b230e5b4a 23
peterbarrett1967 0:606b230e5b4a 24 #include "mbed.h"
peterbarrett1967 0:606b230e5b4a 25 #include "USBHost.h"
peterbarrett1967 0:606b230e5b4a 26
lolpcc 1:9d655061fa1e 27 // Config (default uses x bytes)
lolpcc 1:9d655061fa1e 28 #define MAX_DEVICES 8 // Max number of devices
lolpcc 1:9d655061fa1e 29 #define MAX_ENDPOINTS_TOTAL 16 // Max number of endpoints total
lolpcc 1:9d655061fa1e 30 #define MAX_ENDPOINTS_PER_DEVICE 8 // Max number of endpoints for any one device
peterbarrett1967 0:606b230e5b4a 31
peterbarrett1967 0:606b230e5b4a 32 #define USBLOG 1
peterbarrett1967 0:606b230e5b4a 33 #if USBLOG
peterbarrett1967 0:606b230e5b4a 34 #define LOG(...) printf(__VA_ARGS__)
peterbarrett1967 0:606b230e5b4a 35 #else
peterbarrett1967 0:606b230e5b4a 36 #define LOG(...) do {} while(0)
peterbarrett1967 0:606b230e5b4a 37 #endif
peterbarrett1967 0:606b230e5b4a 38
peterbarrett1967 0:606b230e5b4a 39 // USB host structures
peterbarrett1967 0:606b230e5b4a 40
lolpcc 1:9d655061fa1e 41 #define USB_RAM_SIZE 16*1024 // AHB SRAM block 1 TODO MACHINE DEPENDENT
peterbarrett1967 0:606b230e5b4a 42 #define USB_RAM_BASE 0x2007C000
peterbarrett1967 0:606b230e5b4a 43
peterbarrett1967 0:606b230e5b4a 44 #define TOKEN_SETUP 0
peterbarrett1967 0:606b230e5b4a 45 #define TOKEN_IN 1
peterbarrett1967 0:606b230e5b4a 46 #define TOKEN_OUT 2
peterbarrett1967 0:606b230e5b4a 47
lolpcc 1:9d655061fa1e 48 // Status flags from hub
peterbarrett1967 0:606b230e5b4a 49 #define PORT_CONNECTION 0
peterbarrett1967 0:606b230e5b4a 50 #define PORT_ENABLE 1
peterbarrett1967 0:606b230e5b4a 51 #define PORT_SUSPEND 2
peterbarrett1967 0:606b230e5b4a 52 #define PORT_OVER_CURRENT 3
peterbarrett1967 0:606b230e5b4a 53 #define PORT_RESET 4
peterbarrett1967 0:606b230e5b4a 54 #define PORT_POWER 8
peterbarrett1967 0:606b230e5b4a 55 #define PORT_LOW_SPEED 9
peterbarrett1967 0:606b230e5b4a 56
peterbarrett1967 0:606b230e5b4a 57 #define C_PORT_CONNECTION 16
peterbarrett1967 0:606b230e5b4a 58 #define C_PORT_ENABLE 17
peterbarrett1967 0:606b230e5b4a 59 #define C_PORT_SUSPEND 18
peterbarrett1967 0:606b230e5b4a 60 #define C_PORT_OVER_CURRENT 19
peterbarrett1967 0:606b230e5b4a 61 #define C_PORT_RESET 20
peterbarrett1967 0:606b230e5b4a 62
peterbarrett1967 0:606b230e5b4a 63 typedef struct {
lolpcc 1:9d655061fa1e 64 u8 bm_request_type;
lolpcc 1:9d655061fa1e 65 u8 b_request;
lolpcc 1:9d655061fa1e 66 u16 w_value;
lolpcc 1:9d655061fa1e 67 u16 w_index;
lolpcc 1:9d655061fa1e 68 u16 w_length;
peterbarrett1967 0:606b230e5b4a 69 } Setup;
peterbarrett1967 0:606b230e5b4a 70
peterbarrett1967 0:606b230e5b4a 71
lolpcc 1:9d655061fa1e 72 // Hub stuff is kept private just to keep api simple
peterbarrett1967 0:606b230e5b4a 73 int SetPortFeature(int device, int feature, int index);
peterbarrett1967 0:606b230e5b4a 74 int ClearPortFeature(int device, int feature, int index);
peterbarrett1967 0:606b230e5b4a 75 int SetPortPower(int device, int port);
peterbarrett1967 0:606b230e5b4a 76 int SetPortReset(int device, int port);
peterbarrett1967 0:606b230e5b4a 77 int GetPortStatus(int device, int port, u32* status);
peterbarrett1967 0:606b230e5b4a 78
peterbarrett1967 0:606b230e5b4a 79 //===================================================================
peterbarrett1967 0:606b230e5b4a 80 //===================================================================
lolpcc 1:9d655061fa1e 81 // Hardware defines
peterbarrett1967 0:606b230e5b4a 82
lolpcc 1:9d655061fa1e 83 // HcControl
lolpcc 1:9d655061fa1e 84 #define PeriodicListEnable 0x00000004
lolpcc 1:9d655061fa1e 85 #define IsochronousEnable 0x00000008
lolpcc 1:9d655061fa1e 86 #define ControlListEnable 0x00000010
lolpcc 1:9d655061fa1e 87 #define BulkListEnable 0x00000020
lolpcc 1:9d655061fa1e 88 #define OperationalMask 0x00000080
lolpcc 1:9d655061fa1e 89 #define HostControllerFunctionalState 0x000000C0
peterbarrett1967 0:606b230e5b4a 90
lolpcc 1:9d655061fa1e 91 // HcCommandStatus
lolpcc 1:9d655061fa1e 92 #define HostControllerReset 0x00000001
lolpcc 1:9d655061fa1e 93 #define ControlListFilled 0x00000002
lolpcc 1:9d655061fa1e 94 #define BulkListFilled 0x00000004
peterbarrett1967 0:606b230e5b4a 95
lolpcc 1:9d655061fa1e 96 // HcInterruptStatus Register
lolpcc 1:9d655061fa1e 97 #define WritebackDoneHead 0x00000002
lolpcc 1:9d655061fa1e 98 #define StartofFrame 0x00000004
lolpcc 1:9d655061fa1e 99 #define ResumeDetected 0x00000008
lolpcc 1:9d655061fa1e 100 #define UnrecoverableError 0x00000010
lolpcc 1:9d655061fa1e 101 #define FrameNumberOverflow 0x00000020
lolpcc 1:9d655061fa1e 102 #define RootHubStatusChange 0x00000040
lolpcc 1:9d655061fa1e 103 #define OwnershipChange 0x00000080
lolpcc 1:9d655061fa1e 104 #define MasterInterruptEnable 0x80000000
peterbarrett1967 0:606b230e5b4a 105
lolpcc 1:9d655061fa1e 106 // HcRhStatus
lolpcc 1:9d655061fa1e 107 #define SetGlobalPower 0x00010000
lolpcc 1:9d655061fa1e 108 #define DeviceRemoteWakeupEnable 0x00008000
peterbarrett1967 0:606b230e5b4a 109
lolpcc 1:9d655061fa1e 110 // HcRhPortStatus (hub 0, port 1)
lolpcc 1:9d655061fa1e 111 #define CurrentConnectStatus 0x00000001
lolpcc 1:9d655061fa1e 112 #define PortEnableStatus 0x00000002
lolpcc 1:9d655061fa1e 113 #define PortSuspendStatus 0x00000004
lolpcc 1:9d655061fa1e 114 #define PortOverCurrentIndicator 0x00000008
lolpcc 1:9d655061fa1e 115 #define PortResetStatus 0x00000010
peterbarrett1967 0:606b230e5b4a 116
lolpcc 1:9d655061fa1e 117 #define PortPowerStatus 0x00000100
lolpcc 1:9d655061fa1e 118 #define LowspeedDevice 0x00000200
lolpcc 1:9d655061fa1e 119 #define HighspeedDevice 0x00000400
peterbarrett1967 0:606b230e5b4a 120
lolpcc 1:9d655061fa1e 121 #define ConnectStatusChange (CurrentConnectStatus << 16)
lolpcc 1:9d655061fa1e 122 #define PortResetStatusChange (PortResetStatus << 16)
peterbarrett1967 0:606b230e5b4a 123
peterbarrett1967 0:606b230e5b4a 124
lolpcc 1:9d655061fa1e 125 #define TD_ROUNDING (u32)0x00040000
lolpcc 1:9d655061fa1e 126 #define TD_SETUP (u32)0x00000000
lolpcc 1:9d655061fa1e 127 #define TD_IN (u32)0x00100000
lolpcc 1:9d655061fa1e 128 #define TD_OUT (u32)0x00080000
lolpcc 1:9d655061fa1e 129 #define TD_DELAY_INT(x) (u32)((x) << 21)
lolpcc 1:9d655061fa1e 130 #define TD_TOGGLE_0 (u32)0x02000000
lolpcc 1:9d655061fa1e 131 #define TD_TOGGLE_1 (u32)0x03000000
lolpcc 1:9d655061fa1e 132 #define TD_CC (u32)0xF0000000
peterbarrett1967 0:606b230e5b4a 133
lolpcc 1:9d655061fa1e 134 // HostController EndPoint Descriptor
peterbarrett1967 0:606b230e5b4a 135 typedef struct {
lolpcc 1:9d655061fa1e 136 volatile u32 Control;
lolpcc 1:9d655061fa1e 137 volatile u32 TailTd;
lolpcc 1:9d655061fa1e 138 volatile u32 HeadTd;
lolpcc 1:9d655061fa1e 139 volatile u32 Next;
peterbarrett1967 0:606b230e5b4a 140 } HCED;
peterbarrett1967 0:606b230e5b4a 141
peterbarrett1967 0:606b230e5b4a 142 // HostController Transfer Descriptor
peterbarrett1967 0:606b230e5b4a 143 typedef struct {
lolpcc 1:9d655061fa1e 144 volatile u32 Control;
lolpcc 1:9d655061fa1e 145 volatile u32 CurrBufPtr;
lolpcc 1:9d655061fa1e 146 volatile u32 Next;
lolpcc 1:9d655061fa1e 147 volatile u32 BufEnd;
peterbarrett1967 0:606b230e5b4a 148 } HCTD;
peterbarrett1967 0:606b230e5b4a 149
peterbarrett1967 0:606b230e5b4a 150 // Host Controller Communication Area
peterbarrett1967 0:606b230e5b4a 151 typedef struct {
lolpcc 1:9d655061fa1e 152 volatile u32 InterruptTable[32];
lolpcc 1:9d655061fa1e 153 volatile u16 FrameNumber;
lolpcc 1:9d655061fa1e 154 volatile u16 FrameNumberPad;
lolpcc 1:9d655061fa1e 155 volatile u32 DoneHead;
lolpcc 1:9d655061fa1e 156 volatile u8 Reserved[120];
peterbarrett1967 0:606b230e5b4a 157 } HCCA;
peterbarrett1967 0:606b230e5b4a 158
peterbarrett1967 0:606b230e5b4a 159 //====================================================================================
peterbarrett1967 0:606b230e5b4a 160 //====================================================================================
peterbarrett1967 0:606b230e5b4a 161
peterbarrett1967 0:606b230e5b4a 162 class HostController;
peterbarrett1967 0:606b230e5b4a 163 class Endpoint;
peterbarrett1967 0:606b230e5b4a 164 class Device;
peterbarrett1967 0:606b230e5b4a 165
lolpcc 1:9d655061fa1e 166 // must be 3*16 bytes long
peterbarrett1967 0:606b230e5b4a 167 class Endpoint
peterbarrett1967 0:606b230e5b4a 168 {
peterbarrett1967 0:606b230e5b4a 169 public:
lolpcc 1:9d655061fa1e 170 HCED EndpointDescriptor; // Pointer to EndpointDescriptor == Pointer to Endpoint
lolpcc 1:9d655061fa1e 171 HCTD TDHead;
peterbarrett1967 0:606b230e5b4a 172
lolpcc 1:9d655061fa1e 173 enum State
lolpcc 1:9d655061fa1e 174 {
lolpcc 1:9d655061fa1e 175 Free,
lolpcc 1:9d655061fa1e 176 NotQueued,
lolpcc 1:9d655061fa1e 177 Idle,
lolpcc 1:9d655061fa1e 178 SetupQueued,
lolpcc 1:9d655061fa1e 179 DataQueued,
lolpcc 1:9d655061fa1e 180 StatusQueued,
lolpcc 1:9d655061fa1e 181 CallbackPending
lolpcc 1:9d655061fa1e 182 };
lolpcc 1:9d655061fa1e 183
lolpcc 1:9d655061fa1e 184 volatile u8 CurrentState;
lolpcc 1:9d655061fa1e 185 u8 Flags; // 0x80 In, 0x03 mask endpoint type
peterbarrett1967 0:606b230e5b4a 186
lolpcc 1:9d655061fa1e 187 u16 Length;
lolpcc 1:9d655061fa1e 188 u8* Data;
lolpcc 1:9d655061fa1e 189 USBCallback Callback; // Must be a multiple of 16 bytes long
lolpcc 1:9d655061fa1e 190 void* UserData;
peterbarrett1967 0:606b230e5b4a 191
lolpcc 1:9d655061fa1e 192 int Address()
lolpcc 1:9d655061fa1e 193 {
lolpcc 1:9d655061fa1e 194 int ep = (EndpointDescriptor.Control >> 7) & 0xF;
lolpcc 1:9d655061fa1e 195 if (ep)
lolpcc 1:9d655061fa1e 196 ep |= Flags & 0x80;
lolpcc 1:9d655061fa1e 197 return ep;
lolpcc 1:9d655061fa1e 198 }
lolpcc 1:9d655061fa1e 199
lolpcc 1:9d655061fa1e 200 int Device()
lolpcc 1:9d655061fa1e 201 {
lolpcc 1:9d655061fa1e 202 return EndpointDescriptor.Control & 0x7F;
lolpcc 1:9d655061fa1e 203 }
peterbarrett1967 0:606b230e5b4a 204
lolpcc 1:9d655061fa1e 205 int Status()
lolpcc 1:9d655061fa1e 206 {
lolpcc 1:9d655061fa1e 207 return (TDHead.Control >> 28) & 0xF;
lolpcc 1:9d655061fa1e 208 }
peterbarrett1967 0:606b230e5b4a 209
lolpcc 1:9d655061fa1e 210 u32 Enqueue(u32 head)
lolpcc 1:9d655061fa1e 211 {
lolpcc 1:9d655061fa1e 212 if (CurrentState == NotQueued)
lolpcc 1:9d655061fa1e 213 {
lolpcc 1:9d655061fa1e 214 EndpointDescriptor.Next = head;
lolpcc 1:9d655061fa1e 215 head = (u32)&EndpointDescriptor;
lolpcc 1:9d655061fa1e 216 CurrentState = Idle;
lolpcc 1:9d655061fa1e 217 }
lolpcc 1:9d655061fa1e 218 return head;
lolpcc 1:9d655061fa1e 219 }
peterbarrett1967 0:606b230e5b4a 220 };
peterbarrett1967 0:606b230e5b4a 221
peterbarrett1967 0:606b230e5b4a 222 class Device
peterbarrett1967 0:606b230e5b4a 223 {
peterbarrett1967 0:606b230e5b4a 224 public:
lolpcc 1:9d655061fa1e 225 u8 _endpointMap[MAX_ENDPOINTS_PER_DEVICE*2];
lolpcc 1:9d655061fa1e 226 u8 Hub;
lolpcc 1:9d655061fa1e 227 u8 Port;
lolpcc 1:9d655061fa1e 228 u8 Addr;
lolpcc 1:9d655061fa1e 229 u8 Pad;
peterbarrett1967 0:606b230e5b4a 230
lolpcc 1:9d655061fa1e 231 // Only if this device is a hub
lolpcc 1:9d655061fa1e 232 u8 HubPortCount; // nonzero if this is a hub
lolpcc 1:9d655061fa1e 233 u8 HubInterruptData;
lolpcc 1:9d655061fa1e 234 u8 HubMap;
lolpcc 1:9d655061fa1e 235 u8 HubMask;
peterbarrett1967 0:606b230e5b4a 236
lolpcc 1:9d655061fa1e 237 int Flags; // 1 = Disconnected
peterbarrett1967 0:606b230e5b4a 238
lolpcc 1:9d655061fa1e 239 Setup SetupBuffer;
peterbarrett1967 0:606b230e5b4a 240
lolpcc 1:9d655061fa1e 241 // Allocate endpoint zero
lolpcc 1:9d655061fa1e 242 int Init(DeviceDescriptor* d, int hub, int port, int addr, int lowSpeed)
lolpcc 1:9d655061fa1e 243 {
lolpcc 1:9d655061fa1e 244 Hub = hub;
lolpcc 1:9d655061fa1e 245 Port = port;
lolpcc 1:9d655061fa1e 246 Addr = addr;
lolpcc 1:9d655061fa1e 247 Flags = lowSpeed;
lolpcc 1:9d655061fa1e 248 memset(_endpointMap,0xFF,sizeof(_endpointMap));
lolpcc 1:9d655061fa1e 249 return 0;
lolpcc 1:9d655061fa1e 250 }
peterbarrett1967 0:606b230e5b4a 251
lolpcc 1:9d655061fa1e 252 int SetEndpointIndex(int ep, int endpointIndex)
lolpcc 1:9d655061fa1e 253 {
lolpcc 1:9d655061fa1e 254 for (int i = 0; i < MAX_ENDPOINTS_PER_DEVICE*2; i += 2)
lolpcc 1:9d655061fa1e 255 {
lolpcc 1:9d655061fa1e 256 if (_endpointMap[i] == 0xFF) // Add endpoint to map
lolpcc 1:9d655061fa1e 257 {
lolpcc 1:9d655061fa1e 258 _endpointMap[i] = ep;
lolpcc 1:9d655061fa1e 259 _endpointMap[i+1] = endpointIndex;
lolpcc 1:9d655061fa1e 260 return 0;
lolpcc 1:9d655061fa1e 261 }
lolpcc 1:9d655061fa1e 262 }
lolpcc 1:9d655061fa1e 263 return ERR_ENDPOINT_NONE_LEFT;
lolpcc 1:9d655061fa1e 264 }
peterbarrett1967 0:606b230e5b4a 265
lolpcc 1:9d655061fa1e 266 int GetEndpointIndex(int ep)
lolpcc 1:9d655061fa1e 267 {
lolpcc 1:9d655061fa1e 268 for (int i = 0; i < MAX_ENDPOINTS_PER_DEVICE*2; i += 2)
lolpcc 1:9d655061fa1e 269 {
lolpcc 1:9d655061fa1e 270 if (_endpointMap[i] == ep)
lolpcc 1:9d655061fa1e 271 return _endpointMap[i+1];
lolpcc 1:9d655061fa1e 272 if (_endpointMap[i] == 0xFF)
lolpcc 1:9d655061fa1e 273 break;
lolpcc 1:9d655061fa1e 274 }
lolpcc 1:9d655061fa1e 275 return -1;
lolpcc 1:9d655061fa1e 276 }
peterbarrett1967 0:606b230e5b4a 277 };
peterbarrett1967 0:606b230e5b4a 278
peterbarrett1967 0:606b230e5b4a 279 class HostController
peterbarrett1967 0:606b230e5b4a 280 {
peterbarrett1967 0:606b230e5b4a 281 public:
lolpcc 1:9d655061fa1e 282 HCCA CommunicationArea;
lolpcc 1:9d655061fa1e 283 Endpoint Endpoints[MAX_ENDPOINTS_TOTAL]; // Multiple of 16
lolpcc 1:9d655061fa1e 284
lolpcc 1:9d655061fa1e 285 Endpoint EndpointZero; // For device enumeration
lolpcc 1:9d655061fa1e 286 HCTD _commonTail;
lolpcc 1:9d655061fa1e 287 Setup _setupZero;
lolpcc 1:9d655061fa1e 288
lolpcc 1:9d655061fa1e 289 Device Devices[MAX_DEVICES];
lolpcc 1:9d655061fa1e 290 u32 _frameNumber; // 32 bit ms counter
peterbarrett1967 0:606b230e5b4a 291
lolpcc 1:9d655061fa1e 292 u8 _callbacksPending; // Endpoints with callbacks are pending, set from ISR via ProcessDoneQueue
lolpcc 1:9d655061fa1e 293 u8 _rootHubStatusChange; // Root hub status has changed, set from ISR
lolpcc 1:9d655061fa1e 294 u8 _unused0;
lolpcc 1:9d655061fa1e 295 u8 _unused1;
peterbarrett1967 0:606b230e5b4a 296
lolpcc 1:9d655061fa1e 297 u8 _connectPending; // Reset has initiated a connect
lolpcc 1:9d655061fa1e 298 u8 _connectCountdown; // Number of ms left after reset before we can connect
lolpcc 1:9d655061fa1e 299 u8 _connectHub; // Will connect on this hub
lolpcc 1:9d655061fa1e 300 u8 _connectPort; // ... and this port
peterbarrett1967 0:606b230e5b4a 301
lolpcc 1:9d655061fa1e 302 u8 SRAM[0]; // Start of free SRAM
peterbarrett1967 0:606b230e5b4a 303
lolpcc 1:9d655061fa1e 304 void Loop()
lolpcc 1:9d655061fa1e 305 {
lolpcc 1:9d655061fa1e 306 u16 elapsed = CommunicationArea.FrameNumber - (u16)_frameNumber; // extend to 32 bits
lolpcc 1:9d655061fa1e 307 _frameNumber += elapsed;
peterbarrett1967 0:606b230e5b4a 308
lolpcc 1:9d655061fa1e 309 // Do callbacks, if any
lolpcc 1:9d655061fa1e 310 while (_callbacksPending)
lolpcc 1:9d655061fa1e 311 {
lolpcc 1:9d655061fa1e 312 for (int i = 0; i < MAX_ENDPOINTS_TOTAL; i++)
lolpcc 1:9d655061fa1e 313 {
lolpcc 1:9d655061fa1e 314 Endpoint* endpoint = Endpoints + i;
lolpcc 1:9d655061fa1e 315 if (endpoint->CurrentState == Endpoint::CallbackPending)
lolpcc 1:9d655061fa1e 316 {
lolpcc 1:9d655061fa1e 317 _callbacksPending--;
lolpcc 1:9d655061fa1e 318 endpoint->CurrentState = Endpoint::Idle;
lolpcc 1:9d655061fa1e 319 endpoint->Callback(endpoint->Device(),endpoint->Address(),endpoint->Status(),endpoint->Data,endpoint->Length,endpoint->UserData);
lolpcc 1:9d655061fa1e 320 }
lolpcc 1:9d655061fa1e 321 }
lolpcc 1:9d655061fa1e 322 }
peterbarrett1967 0:606b230e5b4a 323
lolpcc 1:9d655061fa1e 324 // Deal with changes on the root hub
lolpcc 1:9d655061fa1e 325 if (_rootHubStatusChange)
lolpcc 1:9d655061fa1e 326 {
lolpcc 1:9d655061fa1e 327 u32 status = LPC_USB->HcRhPortStatus1;
lolpcc 1:9d655061fa1e 328 _rootHubStatusChange = 0;
lolpcc 1:9d655061fa1e 329 if (status >> 16)
lolpcc 1:9d655061fa1e 330 {
lolpcc 1:9d655061fa1e 331 HubStatusChange(0,1,status);
lolpcc 1:9d655061fa1e 332 LPC_USB->HcRhPortStatus1 = status & 0xFFFF0000; // clear status changes
lolpcc 1:9d655061fa1e 333 }
lolpcc 1:9d655061fa1e 334 }
peterbarrett1967 0:606b230e5b4a 335
lolpcc 1:9d655061fa1e 336 // Connect after reset timeout
lolpcc 1:9d655061fa1e 337 if (_connectCountdown)
lolpcc 1:9d655061fa1e 338 {
lolpcc 1:9d655061fa1e 339 if (elapsed >= _connectCountdown)
lolpcc 1:9d655061fa1e 340 {
lolpcc 1:9d655061fa1e 341 _connectCountdown = 0;
lolpcc 1:9d655061fa1e 342 Connect(_connectHub,_connectPort & 0x7F,_connectPort & 0x80);
lolpcc 1:9d655061fa1e 343 } else
lolpcc 1:9d655061fa1e 344 _connectCountdown -= elapsed;
lolpcc 1:9d655061fa1e 345 }
lolpcc 1:9d655061fa1e 346 }
peterbarrett1967 0:606b230e5b4a 347
lolpcc 1:9d655061fa1e 348 // HubInterrupt - bitmap in dev->HubInterruptData
lolpcc 1:9d655061fa1e 349 void HubInterrupt(int device)
lolpcc 1:9d655061fa1e 350 {
lolpcc 1:9d655061fa1e 351 Device* dev = &Devices[device-1];
lolpcc 1:9d655061fa1e 352 for (int i = 0; i < dev->HubPortCount; i++)
lolpcc 1:9d655061fa1e 353 {
lolpcc 1:9d655061fa1e 354 int port = i+1;
lolpcc 1:9d655061fa1e 355 if (dev->HubInterruptData & (1 << port))
lolpcc 1:9d655061fa1e 356 {
lolpcc 1:9d655061fa1e 357 u32 status = 0;
lolpcc 1:9d655061fa1e 358 GetPortStatus(device,port,&status);
lolpcc 1:9d655061fa1e 359 if (status >> 16)
lolpcc 1:9d655061fa1e 360 {
lolpcc 1:9d655061fa1e 361 if (_connectPending && (status & ConnectStatusChange))
lolpcc 1:9d655061fa1e 362 continue; // Don't connect again until previous device has been added and addressed
peterbarrett1967 0:606b230e5b4a 363
lolpcc 1:9d655061fa1e 364 HubStatusChange(device,port,status);
lolpcc 1:9d655061fa1e 365 if (status & ConnectStatusChange)
lolpcc 1:9d655061fa1e 366 ClearPortFeature(device,C_PORT_CONNECTION,port);
lolpcc 1:9d655061fa1e 367 if (status & PortResetStatusChange)
lolpcc 1:9d655061fa1e 368 ClearPortFeature(device,C_PORT_RESET,port);
lolpcc 1:9d655061fa1e 369 }
lolpcc 1:9d655061fa1e 370 }
lolpcc 1:9d655061fa1e 371 }
lolpcc 1:9d655061fa1e 372 }
peterbarrett1967 0:606b230e5b4a 373
lolpcc 1:9d655061fa1e 374 static void HubInterruptCallback(int device, int endpoint, int status, u8* data, int len, void* userData)
lolpcc 1:9d655061fa1e 375 {
lolpcc 1:9d655061fa1e 376 HostController* controller = (HostController*)userData;
lolpcc 1:9d655061fa1e 377 if (status == 0)
lolpcc 1:9d655061fa1e 378 controller->HubInterrupt(device);
lolpcc 1:9d655061fa1e 379 USBInterruptTransfer(device,endpoint,data,1,HubInterruptCallback,userData);
lolpcc 1:9d655061fa1e 380 }
peterbarrett1967 0:606b230e5b4a 381
lolpcc 1:9d655061fa1e 382 int InitHub(int device)
lolpcc 1:9d655061fa1e 383 {
lolpcc 1:9d655061fa1e 384 u8 buf[16];
lolpcc 1:9d655061fa1e 385 int r= USBControlTransfer(device,DEVICE_TO_HOST | REQUEST_TYPE_CLASS | RECIPIENT_DEVICE,GET_DESCRIPTOR,(DESCRIPTOR_TYPE_HUB << 8),0,buf,sizeof(buf));
lolpcc 1:9d655061fa1e 386 if (r < 0)
lolpcc 1:9d655061fa1e 387 return ERR_HUB_INIT_FAILED;
lolpcc 1:9d655061fa1e 388
lolpcc 1:9d655061fa1e 389 // turn on power on the hubs ports
lolpcc 1:9d655061fa1e 390 Device* dev = &Devices[device-1];
lolpcc 1:9d655061fa1e 391 int ports = buf[2];
lolpcc 1:9d655061fa1e 392 dev->HubPortCount = ports;
lolpcc 1:9d655061fa1e 393 for (int i = 0; i < ports; i++)
lolpcc 1:9d655061fa1e 394 SetPortPower(device,i+1);
lolpcc 1:9d655061fa1e 395
lolpcc 1:9d655061fa1e 396 // Enable hub change interrupts
lolpcc 1:9d655061fa1e 397 return USBInterruptTransfer(device,0x81,&dev->HubInterruptData,1,HubInterruptCallback,this);
lolpcc 1:9d655061fa1e 398 }
lolpcc 1:9d655061fa1e 399
lolpcc 1:9d655061fa1e 400 int AddEndpoint(int device, int ep, int attributes, int maxPacketSize, int interval)
lolpcc 1:9d655061fa1e 401 {
lolpcc 1:9d655061fa1e 402 LOG("AddEndpoint D:%02X A:%02X T:%02X P:%04X I:%02X\r\n",device,ep,attributes,maxPacketSize,interval);
lolpcc 1:9d655061fa1e 403 Device* dev = &Devices[device-1];
lolpcc 1:9d655061fa1e 404 Endpoint* endpoint = AllocateEndpoint(device,ep,attributes,maxPacketSize);
lolpcc 1:9d655061fa1e 405 if (!endpoint)
lolpcc 1:9d655061fa1e 406 return ERR_ENDPOINT_NONE_LEFT;
lolpcc 1:9d655061fa1e 407 dev->SetEndpointIndex(ep,endpoint - Endpoints);
lolpcc 1:9d655061fa1e 408 endpoint->EndpointDescriptor.Control |= dev->Flags; // Map in slow speed
lolpcc 1:9d655061fa1e 409 return 0; // TODO ed->bInterval
lolpcc 1:9d655061fa1e 410 }
lolpcc 1:9d655061fa1e 411
lolpcc 1:9d655061fa1e 412 int AddEndpoint(int device, EndpointDescriptor* ed)
lolpcc 1:9d655061fa1e 413 {
lolpcc 1:9d655061fa1e 414 return AddEndpoint(device,ed->bEndpointAddress,ed->bmAttributes,ed->wMaxPacketSize,ed->bInterval);
lolpcc 1:9d655061fa1e 415 }
peterbarrett1967 0:606b230e5b4a 416
lolpcc 1:9d655061fa1e 417 // allocate a endpoint
lolpcc 1:9d655061fa1e 418 Endpoint* AllocateEndpoint(int device, int endpointAddress, int type, int maxPacketSize)
lolpcc 1:9d655061fa1e 419 {
lolpcc 1:9d655061fa1e 420 for (int i = 0; i < MAX_ENDPOINTS_TOTAL; i++)
lolpcc 1:9d655061fa1e 421 {
lolpcc 1:9d655061fa1e 422 Endpoint* ep = &Endpoints[i];
lolpcc 1:9d655061fa1e 423 if (ep->CurrentState == 0)
lolpcc 1:9d655061fa1e 424 {
lolpcc 1:9d655061fa1e 425 //LOG("Allocated endpoint %d to %02X:%02X\r\n",i,device,endpointAddress);
lolpcc 1:9d655061fa1e 426 ep->Flags = (endpointAddress & 0x80) | (type & 3);
lolpcc 1:9d655061fa1e 427 ep->CurrentState = Endpoint::NotQueued;
lolpcc 1:9d655061fa1e 428 ep->EndpointDescriptor.Control = (maxPacketSize << 16) | ((endpointAddress & 0x7F) << 7) | device;
lolpcc 1:9d655061fa1e 429 return ep;
lolpcc 1:9d655061fa1e 430 }
lolpcc 1:9d655061fa1e 431 }
lolpcc 1:9d655061fa1e 432 return 0;
lolpcc 1:9d655061fa1e 433 }
peterbarrett1967 0:606b230e5b4a 434
lolpcc 1:9d655061fa1e 435 Endpoint* GetEndpoint(int device, int ep)
lolpcc 1:9d655061fa1e 436 {
lolpcc 1:9d655061fa1e 437 if (device == 0)
lolpcc 1:9d655061fa1e 438 {
lolpcc 1:9d655061fa1e 439 //printf("WARNING: USING DEVICE 0\r\n");
lolpcc 1:9d655061fa1e 440 return &EndpointZero;
lolpcc 1:9d655061fa1e 441 }
lolpcc 1:9d655061fa1e 442 if (device > MAX_DEVICES)
lolpcc 1:9d655061fa1e 443 return 0;
lolpcc 1:9d655061fa1e 444 int i = Devices[device-1].GetEndpointIndex(ep);
lolpcc 1:9d655061fa1e 445 if (i == -1)
lolpcc 1:9d655061fa1e 446 return 0;
lolpcc 1:9d655061fa1e 447 return Endpoints + i;
lolpcc 1:9d655061fa1e 448 }
peterbarrett1967 0:606b230e5b4a 449
lolpcc 1:9d655061fa1e 450 int Transfer(Endpoint* endpoint, int token, u8* data, int len, int state)
lolpcc 1:9d655061fa1e 451 {
lolpcc 1:9d655061fa1e 452 //LOG("Transfer %02X T:%d Len:%d S:%d\r\n",endpoint->Address(),token,len,state);
lolpcc 1:9d655061fa1e 453
lolpcc 1:9d655061fa1e 454 int toggle = 0;
lolpcc 1:9d655061fa1e 455 if (endpoint->Address() == 0)
lolpcc 1:9d655061fa1e 456 toggle = (token == TOKEN_SETUP) ? TD_TOGGLE_0 : TD_TOGGLE_1;
peterbarrett1967 0:606b230e5b4a 457
lolpcc 1:9d655061fa1e 458 if (token != TOKEN_SETUP)
lolpcc 1:9d655061fa1e 459 token = (token == TOKEN_IN ? TD_IN : TD_OUT);
peterbarrett1967 0:606b230e5b4a 460
lolpcc 1:9d655061fa1e 461 HCTD* head = &endpoint->TDHead;
lolpcc 1:9d655061fa1e 462 HCTD* tail = &_commonTail;
peterbarrett1967 0:606b230e5b4a 463
lolpcc 1:9d655061fa1e 464 head->Control = TD_ROUNDING | token | TD_DELAY_INT(0) | toggle | TD_CC;
lolpcc 1:9d655061fa1e 465 head->CurrBufPtr = (u32)data;
lolpcc 1:9d655061fa1e 466 head->BufEnd = (u32)(data + len - 1);
lolpcc 1:9d655061fa1e 467 head->Next = (u32)tail;
peterbarrett1967 0:606b230e5b4a 468
lolpcc 1:9d655061fa1e 469 HCED* ed = &endpoint->EndpointDescriptor;
lolpcc 1:9d655061fa1e 470 ed->HeadTd = (u32)head | (ed->HeadTd & 0x00000002); // carry toggle
lolpcc 1:9d655061fa1e 471 ed->TailTd = (u32)tail;
lolpcc 1:9d655061fa1e 472
lolpcc 1:9d655061fa1e 473 //HCTD* td = head;
lolpcc 1:9d655061fa1e 474 //LOG("%04X TD %08X %08X %08X Next:%08X\r\n",CommunicationArea.FrameNumber,td->Control,td->CurrBufPtr,td->BufEnd,td->Next);
lolpcc 1:9d655061fa1e 475 //LOG("%04X ED %08X %08X %08X\r\n",CommunicationArea.FrameNumber,ed->Control,ed->HeadTd,ed->TailTd);
lolpcc 1:9d655061fa1e 476
lolpcc 1:9d655061fa1e 477 switch (endpoint->Flags & 3)
lolpcc 1:9d655061fa1e 478 {
lolpcc 1:9d655061fa1e 479 case ENDPOINT_CONTROL:
lolpcc 1:9d655061fa1e 480 LPC_USB->HcControlHeadED = endpoint->Enqueue(LPC_USB->HcControlHeadED); // May change state NotQueued->Idle
lolpcc 1:9d655061fa1e 481 endpoint->CurrentState = state; // Get in before an int
lolpcc 1:9d655061fa1e 482 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | ControlListFilled;
lolpcc 1:9d655061fa1e 483 LPC_USB->HcControl = LPC_USB->HcControl | ControlListEnable;
lolpcc 1:9d655061fa1e 484 break;
peterbarrett1967 0:606b230e5b4a 485
lolpcc 1:9d655061fa1e 486 case ENDPOINT_BULK:
lolpcc 1:9d655061fa1e 487 LPC_USB->HcBulkHeadED = endpoint->Enqueue(LPC_USB->HcBulkHeadED);
lolpcc 1:9d655061fa1e 488 endpoint->CurrentState = state;
lolpcc 1:9d655061fa1e 489 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | BulkListFilled;
lolpcc 1:9d655061fa1e 490 LPC_USB->HcControl = LPC_USB->HcControl | BulkListEnable;
lolpcc 1:9d655061fa1e 491 break;
peterbarrett1967 0:606b230e5b4a 492
lolpcc 1:9d655061fa1e 493 case ENDPOINT_INTERRUPT:
lolpcc 1:9d655061fa1e 494 CommunicationArea.InterruptTable[0] = endpoint->Enqueue(CommunicationArea.InterruptTable[0]);
lolpcc 1:9d655061fa1e 495 endpoint->CurrentState = state;
lolpcc 1:9d655061fa1e 496 LPC_USB->HcControl |= PeriodicListEnable;
lolpcc 1:9d655061fa1e 497 break;
lolpcc 1:9d655061fa1e 498 }
lolpcc 1:9d655061fa1e 499 return 0;
lolpcc 1:9d655061fa1e 500 }
lolpcc 1:9d655061fa1e 501
lolpcc 1:9d655061fa1e 502 // Remove an endpoint from an active queue
lolpcc 1:9d655061fa1e 503 bool Remove(HCED* ed, volatile HCED** queue)
lolpcc 1:9d655061fa1e 504 {
lolpcc 1:9d655061fa1e 505 if (*queue == 0)
lolpcc 1:9d655061fa1e 506 return false;
lolpcc 1:9d655061fa1e 507 if (*queue == (volatile HCED*)ed)
lolpcc 1:9d655061fa1e 508 {
lolpcc 1:9d655061fa1e 509 *queue = (volatile HCED*)ed->Next; // At head of queue
lolpcc 1:9d655061fa1e 510 return true;
lolpcc 1:9d655061fa1e 511 }
peterbarrett1967 0:606b230e5b4a 512
lolpcc 1:9d655061fa1e 513 volatile HCED* head = *queue;
lolpcc 1:9d655061fa1e 514 while (head)
lolpcc 1:9d655061fa1e 515 {
lolpcc 1:9d655061fa1e 516 if (head->Next == (u32)ed)
lolpcc 1:9d655061fa1e 517 {
lolpcc 1:9d655061fa1e 518 head->Next = ed->Next;
lolpcc 1:9d655061fa1e 519 return true;
lolpcc 1:9d655061fa1e 520 }
lolpcc 1:9d655061fa1e 521 head = (volatile HCED*)head->Next;
lolpcc 1:9d655061fa1e 522 }
lolpcc 1:9d655061fa1e 523 return false;
lolpcc 1:9d655061fa1e 524 }
peterbarrett1967 0:606b230e5b4a 525
lolpcc 1:9d655061fa1e 526 void Release(Endpoint* endpoint)
lolpcc 1:9d655061fa1e 527 {
lolpcc 1:9d655061fa1e 528 if (endpoint->CurrentState == Endpoint::NotQueued)
lolpcc 1:9d655061fa1e 529 {
lolpcc 1:9d655061fa1e 530 // Never event used it, nothing to do
lolpcc 1:9d655061fa1e 531 }
lolpcc 1:9d655061fa1e 532 else
lolpcc 1:9d655061fa1e 533 {
lolpcc 1:9d655061fa1e 534 HCED* ed = (HCED*)endpoint;
lolpcc 1:9d655061fa1e 535 ed->Control |= 0x4000; // SKIP
lolpcc 1:9d655061fa1e 536 switch (endpoint->Flags & 0x03)
lolpcc 1:9d655061fa1e 537 {
lolpcc 1:9d655061fa1e 538 case ENDPOINT_CONTROL:
lolpcc 1:9d655061fa1e 539 Remove(ed,(volatile HCED**)&LPC_USB->HcControlHeadED);
lolpcc 1:9d655061fa1e 540 break;
lolpcc 1:9d655061fa1e 541 case ENDPOINT_BULK:
lolpcc 1:9d655061fa1e 542 Remove(ed,(volatile HCED**)&LPC_USB->HcBulkHeadED);
lolpcc 1:9d655061fa1e 543 break;
lolpcc 1:9d655061fa1e 544 case ENDPOINT_INTERRUPT:
lolpcc 1:9d655061fa1e 545 for (int i = 0; i < 32; i++)
lolpcc 1:9d655061fa1e 546 Remove(ed,(volatile HCED**)&CommunicationArea.InterruptTable[i]);
lolpcc 1:9d655061fa1e 547 break;
lolpcc 1:9d655061fa1e 548 }
peterbarrett1967 0:606b230e5b4a 549
lolpcc 1:9d655061fa1e 550 u16 fn = CommunicationArea.FrameNumber;
lolpcc 1:9d655061fa1e 551 while (fn == CommunicationArea.FrameNumber)
lolpcc 1:9d655061fa1e 552 ; // Wait for next frame
peterbarrett1967 0:606b230e5b4a 553
lolpcc 1:9d655061fa1e 554 }
peterbarrett1967 0:606b230e5b4a 555
lolpcc 1:9d655061fa1e 556 // In theory, the endpoint is now dead.
lolpcc 1:9d655061fa1e 557 // TODO: Will Callbacks ever be pending? BUGBUG
lolpcc 1:9d655061fa1e 558 memset(endpoint,0,sizeof(Endpoint));
lolpcc 1:9d655061fa1e 559 }
peterbarrett1967 0:606b230e5b4a 560
lolpcc 1:9d655061fa1e 561 // Pop the last TD from the list
lolpcc 1:9d655061fa1e 562 HCTD* Reverse(HCTD* current)
lolpcc 1:9d655061fa1e 563 {
lolpcc 1:9d655061fa1e 564 HCTD *result = NULL,*temp;
lolpcc 1:9d655061fa1e 565 while (current)
lolpcc 1:9d655061fa1e 566 {
lolpcc 1:9d655061fa1e 567 temp = (HCTD*)current->Next;
lolpcc 1:9d655061fa1e 568 current->Next = (u32)result;
lolpcc 1:9d655061fa1e 569 result = current;
lolpcc 1:9d655061fa1e 570 current = temp;
lolpcc 1:9d655061fa1e 571 }
lolpcc 1:9d655061fa1e 572 return result;
lolpcc 1:9d655061fa1e 573 }
peterbarrett1967 0:606b230e5b4a 574
lolpcc 1:9d655061fa1e 575 // Called from interrupt...
lolpcc 1:9d655061fa1e 576 // Control endpoints use a state machine to progress through the transfers
lolpcc 1:9d655061fa1e 577 void ProcessDoneQueue(u32 tdList)
lolpcc 1:9d655061fa1e 578 {
lolpcc 1:9d655061fa1e 579 HCTD* list = Reverse((HCTD*)tdList);
lolpcc 1:9d655061fa1e 580 while (list)
lolpcc 1:9d655061fa1e 581 {
lolpcc 1:9d655061fa1e 582 Endpoint* endpoint = (Endpoint*)(list-1);
lolpcc 1:9d655061fa1e 583 list = (HCTD*)list->Next;
lolpcc 1:9d655061fa1e 584 int ep = endpoint->Address();
lolpcc 1:9d655061fa1e 585 bool in = endpoint->Flags & 0x80;
lolpcc 1:9d655061fa1e 586 int status = (endpoint->TDHead.Control >> 28) & 0xF;
peterbarrett1967 0:606b230e5b4a 587
lolpcc 1:9d655061fa1e 588 //LOG("ProcessDoneQueue %02X %08X\r\n",ep,endpoint->TDHead.Control);
peterbarrett1967 0:606b230e5b4a 589
lolpcc 1:9d655061fa1e 590 if (status != 0)
lolpcc 1:9d655061fa1e 591 {
lolpcc 1:9d655061fa1e 592 LOG("ProcessDoneQueue status %02X %d\r\n",ep,status);
lolpcc 1:9d655061fa1e 593 endpoint->CurrentState = Endpoint::Idle;
lolpcc 1:9d655061fa1e 594 } else {
lolpcc 1:9d655061fa1e 595 switch (endpoint->CurrentState)
lolpcc 1:9d655061fa1e 596 {
lolpcc 1:9d655061fa1e 597 case Endpoint::SetupQueued:
lolpcc 1:9d655061fa1e 598 if (endpoint->Length == 0)
lolpcc 1:9d655061fa1e 599 Transfer(endpoint,in ? TOKEN_OUT : TOKEN_IN,0,0,Endpoint::StatusQueued); // Skip Data Phase
lolpcc 1:9d655061fa1e 600 else
lolpcc 1:9d655061fa1e 601 Transfer(endpoint,in ? TOKEN_IN : TOKEN_OUT,endpoint->Data,endpoint->Length, Endpoint::DataQueued); // Setup is done, now Data
lolpcc 1:9d655061fa1e 602 break;
peterbarrett1967 0:606b230e5b4a 603
lolpcc 1:9d655061fa1e 604 case Endpoint::DataQueued:
lolpcc 1:9d655061fa1e 605 if (endpoint->TDHead.CurrBufPtr)
lolpcc 1:9d655061fa1e 606 endpoint->Length = endpoint->TDHead.CurrBufPtr - (u32)endpoint->Data;
peterbarrett1967 0:606b230e5b4a 607
lolpcc 1:9d655061fa1e 608 if (ep == 0)
lolpcc 1:9d655061fa1e 609 Transfer(endpoint,in ? TOKEN_OUT : TOKEN_IN,0,0,Endpoint::StatusQueued); // Data is done, now Status, Control only
lolpcc 1:9d655061fa1e 610 else
lolpcc 1:9d655061fa1e 611 endpoint->CurrentState = Endpoint::Idle;
lolpcc 1:9d655061fa1e 612 break;
peterbarrett1967 0:606b230e5b4a 613
lolpcc 1:9d655061fa1e 614 case Endpoint::StatusQueued: // Transaction is done
lolpcc 1:9d655061fa1e 615 endpoint->CurrentState = Endpoint::Idle;
lolpcc 1:9d655061fa1e 616 break;
lolpcc 1:9d655061fa1e 617 }
lolpcc 1:9d655061fa1e 618 }
peterbarrett1967 0:606b230e5b4a 619
lolpcc 1:9d655061fa1e 620 // Complete, flag if we need a callback
lolpcc 1:9d655061fa1e 621 if (endpoint->Callback && endpoint->CurrentState == Endpoint::Idle)
lolpcc 1:9d655061fa1e 622 {
lolpcc 1:9d655061fa1e 623 endpoint->CurrentState = Endpoint::CallbackPending;
lolpcc 1:9d655061fa1e 624 _callbacksPending++;
lolpcc 1:9d655061fa1e 625 }
lolpcc 1:9d655061fa1e 626 }
lolpcc 1:9d655061fa1e 627 }
peterbarrett1967 0:606b230e5b4a 628
lolpcc 1:9d655061fa1e 629 // Hack to reset devices that don't want to connect
lolpcc 1:9d655061fa1e 630 int AddDevice(int hub, int port, bool isLowSpeed)
lolpcc 1:9d655061fa1e 631 {
lolpcc 1:9d655061fa1e 632 int device = AddDeviceCore(hub,port,isLowSpeed);
peterbarrett1967 0:606b230e5b4a 633 if (device < 0)
lolpcc 1:9d655061fa1e 634 {
lolpcc 1:9d655061fa1e 635 LOG("========RETRY ADD DEVICE========\r\n"); // This will go for ever.. TODO power cycle root?
lolpcc 1:9d655061fa1e 636 Disconnect(hub,port); // Could not read descriptor at assigned address, reset this port and try again
lolpcc 1:9d655061fa1e 637 ResetPort(hub,port); // Cheap bluetooth dongles often need this on a hotplug
peterbarrett1967 0:606b230e5b4a 638 return -1;
peterbarrett1967 0:606b230e5b4a 639 }
lolpcc 1:9d655061fa1e 640 return device;
lolpcc 1:9d655061fa1e 641 }
peterbarrett1967 0:606b230e5b4a 642
lolpcc 1:9d655061fa1e 643 int AddDeviceCore(int hub, int port, bool isLowSpeed)
lolpcc 1:9d655061fa1e 644 {
lolpcc 1:9d655061fa1e 645 int lowSpeed = isLowSpeed ? 0x2000 : 0;
lolpcc 1:9d655061fa1e 646 DeviceDescriptor desc;
lolpcc 1:9d655061fa1e 647 EndpointZero.EndpointDescriptor.Control = (8 << 16) | lowSpeed; // MaxPacketSize == 8
lolpcc 1:9d655061fa1e 648 int r = GetDescriptor(0,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,8);
lolpcc 1:9d655061fa1e 649 if (r < 0)
lolpcc 1:9d655061fa1e 650 {
lolpcc 1:9d655061fa1e 651 LOG("FAILED TO LOAD DESCRIPTOR FOR DEVICE 0\r\n");
lolpcc 1:9d655061fa1e 652 return r;
lolpcc 1:9d655061fa1e 653 }
peterbarrett1967 0:606b230e5b4a 654
lolpcc 1:9d655061fa1e 655 EndpointZero.EndpointDescriptor.Control = (desc.bMaxPacketSize << 16) | lowSpeed; // Actual MaxPacketSize
lolpcc 1:9d655061fa1e 656 r = GetDescriptor(0,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,sizeof(desc));
lolpcc 1:9d655061fa1e 657 if (r < 0)
lolpcc 1:9d655061fa1e 658 return r;
peterbarrett1967 0:606b230e5b4a 659
lolpcc 1:9d655061fa1e 660 LOG("\r\nClass %02X found %04X:%04X\r\n\r\n",desc.bDeviceClass,desc.idVendor,desc.idProduct);
peterbarrett1967 0:606b230e5b4a 661
lolpcc 1:9d655061fa1e 662 // Now assign the device an address, move off EndpointZero
lolpcc 1:9d655061fa1e 663 int device = 0;
lolpcc 1:9d655061fa1e 664 for (int i = 0; i < MAX_DEVICES; i++)
lolpcc 1:9d655061fa1e 665 {
lolpcc 1:9d655061fa1e 666 if (Devices[i].Port == 0)
lolpcc 1:9d655061fa1e 667 {
lolpcc 1:9d655061fa1e 668 device = i+1;
lolpcc 1:9d655061fa1e 669 break;
lolpcc 1:9d655061fa1e 670 }
lolpcc 1:9d655061fa1e 671 }
lolpcc 1:9d655061fa1e 672 if (!device)
lolpcc 1:9d655061fa1e 673 return ERR_DEVICE_NONE_LEFT;
peterbarrett1967 0:606b230e5b4a 674
lolpcc 1:9d655061fa1e 675 r = SetAddress(0,device);
lolpcc 1:9d655061fa1e 676 if (r)
lolpcc 1:9d655061fa1e 677 return r;
lolpcc 1:9d655061fa1e 678 DelayMS(2);
lolpcc 1:9d655061fa1e 679
lolpcc 1:9d655061fa1e 680 // Now at a nonzero address, create control endpoint
lolpcc 1:9d655061fa1e 681 Device* dev = &Devices[device-1];
lolpcc 1:9d655061fa1e 682 dev->Init(&desc,hub,port,device,lowSpeed);
lolpcc 1:9d655061fa1e 683 AddEndpoint(device,0,ENDPOINT_CONTROL,desc.bMaxPacketSize,0);
lolpcc 1:9d655061fa1e 684 _connectPending = 0;
peterbarrett1967 0:606b230e5b4a 685
lolpcc 1:9d655061fa1e 686 // Verify this all works
lolpcc 1:9d655061fa1e 687 r = GetDescriptor(device,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,sizeof(desc));
lolpcc 1:9d655061fa1e 688 if (r < 0)
lolpcc 1:9d655061fa1e 689 return r;
peterbarrett1967 0:606b230e5b4a 690
lolpcc 1:9d655061fa1e 691 // Set to interface 0 by default
lolpcc 1:9d655061fa1e 692 // Calls LoadDevice if interface is found
lolpcc 1:9d655061fa1e 693 r = SetConfigurationAndInterface(device,1,0,&desc);
peterbarrett1967 0:606b230e5b4a 694
lolpcc 1:9d655061fa1e 695 if (desc.bDeviceClass == CLASS_HUB)
lolpcc 1:9d655061fa1e 696 InitHub(device); // Handle hubs in this code
peterbarrett1967 0:606b230e5b4a 697
lolpcc 1:9d655061fa1e 698 return device;
lolpcc 1:9d655061fa1e 699 }
peterbarrett1967 0:606b230e5b4a 700
lolpcc 1:9d655061fa1e 701 // Walk descriptors and create endpoints for a given device
lolpcc 1:9d655061fa1e 702 // TODO configuration !=1, alternate settings etc.
lolpcc 1:9d655061fa1e 703 int SetConfigurationAndInterface(int device, int configuration, int interfaceNumber, DeviceDescriptor* desc)
lolpcc 1:9d655061fa1e 704 {
lolpcc 1:9d655061fa1e 705 u8 buffer[255];
lolpcc 1:9d655061fa1e 706 int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,sizeof(buffer));
lolpcc 1:9d655061fa1e 707 if (err < 0)
lolpcc 1:9d655061fa1e 708 return err;
peterbarrett1967 0:606b230e5b4a 709
lolpcc 1:9d655061fa1e 710 err = SetConfiguration(device,configuration);
lolpcc 1:9d655061fa1e 711 if (err < 0)
lolpcc 1:9d655061fa1e 712 return err;
peterbarrett1967 0:606b230e5b4a 713
lolpcc 1:9d655061fa1e 714 // Add the endpoints for this interface
lolpcc 1:9d655061fa1e 715 int len = buffer[2] | (buffer[3] << 8);
lolpcc 1:9d655061fa1e 716 u8* d = buffer;
lolpcc 1:9d655061fa1e 717 u8* end = d + len;
lolpcc 1:9d655061fa1e 718 InterfaceDescriptor* found = 0;
lolpcc 1:9d655061fa1e 719 while (d < end)
lolpcc 1:9d655061fa1e 720 {
lolpcc 1:9d655061fa1e 721 if (d[1] == DESCRIPTOR_TYPE_INTERFACE)
lolpcc 1:9d655061fa1e 722 {
lolpcc 1:9d655061fa1e 723 InterfaceDescriptor* id = (InterfaceDescriptor*)d;
lolpcc 1:9d655061fa1e 724 if (id->bInterfaceNumber == interfaceNumber)
lolpcc 1:9d655061fa1e 725 {
lolpcc 1:9d655061fa1e 726 found = id;
lolpcc 1:9d655061fa1e 727 d += d[0];
lolpcc 1:9d655061fa1e 728 while (d < end && d[1] != DESCRIPTOR_TYPE_INTERFACE)
lolpcc 1:9d655061fa1e 729 {
lolpcc 1:9d655061fa1e 730 switch (d[1])
lolpcc 1:9d655061fa1e 731 {
lolpcc 1:9d655061fa1e 732 case DESCRIPTOR_TYPE_ENDPOINT:
lolpcc 1:9d655061fa1e 733 AddEndpoint(device,(EndpointDescriptor*)d);
lolpcc 1:9d655061fa1e 734 break;
lolpcc 1:9d655061fa1e 735 default:
lolpcc 1:9d655061fa1e 736 LOG("Skipping descriptor %02X (%d bytes)\r\n",d[1],d[0]);
lolpcc 1:9d655061fa1e 737 }
lolpcc 1:9d655061fa1e 738 d += d[0];
lolpcc 1:9d655061fa1e 739 }
lolpcc 1:9d655061fa1e 740 }
lolpcc 1:9d655061fa1e 741 }
lolpcc 1:9d655061fa1e 742 d += d[0];
lolpcc 1:9d655061fa1e 743 }
peterbarrett1967 0:606b230e5b4a 744
lolpcc 1:9d655061fa1e 745 if (!found)
lolpcc 1:9d655061fa1e 746 return ERR_INTERFACE_NOT_FOUND;
lolpcc 1:9d655061fa1e 747 OnLoadDevice(device,desc,found);
lolpcc 1:9d655061fa1e 748 return 0;
lolpcc 1:9d655061fa1e 749 }
peterbarrett1967 0:606b230e5b4a 750
lolpcc 1:9d655061fa1e 751 void Init()
lolpcc 1:9d655061fa1e 752 {
lolpcc 1:9d655061fa1e 753 LOG("USB INIT (Controller is %d bytes)\r\n",sizeof(*this));
lolpcc 1:9d655061fa1e 754 memset(this,0,sizeof(HostController));
lolpcc 1:9d655061fa1e 755 EndpointZero.CurrentState = Endpoint::NotQueued;
lolpcc 1:9d655061fa1e 756 HWInit(&CommunicationArea);
lolpcc 1:9d655061fa1e 757 DelayMS(10);
lolpcc 1:9d655061fa1e 758 }
peterbarrett1967 0:606b230e5b4a 759
lolpcc 1:9d655061fa1e 760 void ResetPort(int hub, int port)
lolpcc 1:9d655061fa1e 761 {
lolpcc 1:9d655061fa1e 762 LOG("ResetPort Hub:%d Port:%d\r\n",hub,port);
lolpcc 1:9d655061fa1e 763 _connectPending++; // Only reset/add 1 device at a time
lolpcc 1:9d655061fa1e 764 if (hub == 0)
lolpcc 1:9d655061fa1e 765 LPC_USB->HcRhPortStatus1 = PortResetStatus; // Reset Root Hub, port 1
lolpcc 1:9d655061fa1e 766 else
lolpcc 1:9d655061fa1e 767 SetPortReset(hub,port); // or reset other hub
lolpcc 1:9d655061fa1e 768 }
peterbarrett1967 0:606b230e5b4a 769
lolpcc 1:9d655061fa1e 770 void Disconnect(int hub, int port)
lolpcc 1:9d655061fa1e 771 {
lolpcc 1:9d655061fa1e 772 LOG("Disconnect Hub:%d Port:%d\r\n",hub,port); // Mark a device for destruction
lolpcc 1:9d655061fa1e 773 for (int i = 0; i < MAX_DEVICES; i++)
lolpcc 1:9d655061fa1e 774 {
lolpcc 1:9d655061fa1e 775 Device* dev = Devices + i;
lolpcc 1:9d655061fa1e 776 if (dev->Port == port && dev->Hub == hub)
lolpcc 1:9d655061fa1e 777 {
lolpcc 1:9d655061fa1e 778 // Disconnect everything that is attached to this device if it is a hub
lolpcc 1:9d655061fa1e 779 for (int p = 0; p < dev->HubPortCount; p++)
lolpcc 1:9d655061fa1e 780 Disconnect(i+1,p+1);
peterbarrett1967 0:606b230e5b4a 781
lolpcc 1:9d655061fa1e 782 // Now release endpoints
lolpcc 1:9d655061fa1e 783 for (int j = 1; j < MAX_ENDPOINTS_PER_DEVICE*2; j += 2)
lolpcc 1:9d655061fa1e 784 {
lolpcc 1:9d655061fa1e 785 u8 endpointIndex = dev->_endpointMap[j];
lolpcc 1:9d655061fa1e 786 if (endpointIndex != 0xFF)
lolpcc 1:9d655061fa1e 787 Release(Endpoints + endpointIndex);
lolpcc 1:9d655061fa1e 788 }
lolpcc 1:9d655061fa1e 789 dev->Port = 0; // Device is now free
lolpcc 1:9d655061fa1e 790 dev->Flags = 0;
lolpcc 1:9d655061fa1e 791 return;
lolpcc 1:9d655061fa1e 792 }
lolpcc 1:9d655061fa1e 793 }
lolpcc 1:9d655061fa1e 794 }
peterbarrett1967 0:606b230e5b4a 795
lolpcc 1:9d655061fa1e 796 // called after reset
lolpcc 1:9d655061fa1e 797 void Connect(int hub, int port, bool lowspeed)
lolpcc 1:9d655061fa1e 798 {
lolpcc 1:9d655061fa1e 799 LOG("Connect Hub:%d Port:%d %s\r\n",hub,port,lowspeed ? "slow" : "full");
lolpcc 1:9d655061fa1e 800 AddDevice(hub,port,lowspeed);
lolpcc 1:9d655061fa1e 801 }
peterbarrett1967 0:606b230e5b4a 802
lolpcc 1:9d655061fa1e 803 // Called from interrupt
lolpcc 1:9d655061fa1e 804 void HubStatusChange(int hub, int port, u32 status)
lolpcc 1:9d655061fa1e 805 {
lolpcc 1:9d655061fa1e 806 LOG("HubStatusChange Hub:%d Port:%d %08X\r\n",hub,port,status);
lolpcc 1:9d655061fa1e 807 if (status & ConnectStatusChange)
lolpcc 1:9d655061fa1e 808 {
lolpcc 1:9d655061fa1e 809 if (status & CurrentConnectStatus) // Connecting
lolpcc 1:9d655061fa1e 810 ResetPort(hub,port); // Reset to initiate connect (state machine?)
lolpcc 1:9d655061fa1e 811 else
lolpcc 1:9d655061fa1e 812 Disconnect(hub,port);
lolpcc 1:9d655061fa1e 813 }
peterbarrett1967 0:606b230e5b4a 814
lolpcc 1:9d655061fa1e 815 if (status & PortResetStatusChange)
lolpcc 1:9d655061fa1e 816 {
lolpcc 1:9d655061fa1e 817 if (!(status & PortResetStatus))
lolpcc 1:9d655061fa1e 818 {
lolpcc 1:9d655061fa1e 819 _connectCountdown = 200; // Schedule a connection in 200ms
lolpcc 1:9d655061fa1e 820 if (status & LowspeedDevice)
lolpcc 1:9d655061fa1e 821 port |= 0x80;
lolpcc 1:9d655061fa1e 822 _connectHub = hub;
lolpcc 1:9d655061fa1e 823 _connectPort = port;
lolpcc 1:9d655061fa1e 824 }
lolpcc 1:9d655061fa1e 825 }
lolpcc 1:9d655061fa1e 826 }
peterbarrett1967 0:606b230e5b4a 827
lolpcc 1:9d655061fa1e 828 #define HOST_CLK_EN (1<<0)
lolpcc 1:9d655061fa1e 829 #define PORTSEL_CLK_EN (1<<3)
lolpcc 1:9d655061fa1e 830 #define AHB_CLK_EN (1<<4)
lolpcc 1:9d655061fa1e 831 #define CLOCK_MASK (HOST_CLK_EN | PORTSEL_CLK_EN | AHB_CLK_EN)
peterbarrett1967 0:606b230e5b4a 832
lolpcc 1:9d655061fa1e 833 #define FRAMEINTERVAL (12000-1) // 1ms
lolpcc 1:9d655061fa1e 834 #define DEFAULT_FMINTERVAL ((((6 * (FRAMEINTERVAL - 210)) / 7) << 16) | FRAMEINTERVAL)
peterbarrett1967 0:606b230e5b4a 835
lolpcc 1:9d655061fa1e 836 void DelayMS(int ms)
lolpcc 1:9d655061fa1e 837 {
lolpcc 1:9d655061fa1e 838 u16 f = ms + CommunicationArea.FrameNumber;
lolpcc 1:9d655061fa1e 839 while (f != CommunicationArea.FrameNumber)
lolpcc 1:9d655061fa1e 840 ;
lolpcc 1:9d655061fa1e 841 }
peterbarrett1967 0:606b230e5b4a 842
lolpcc 1:9d655061fa1e 843 static void HWInit(HCCA* cca)
lolpcc 1:9d655061fa1e 844 {
lolpcc 1:9d655061fa1e 845 NVIC_DisableIRQ(USB_IRQn);
lolpcc 1:9d655061fa1e 846
lolpcc 1:9d655061fa1e 847 // turn on power for USB
lolpcc 1:9d655061fa1e 848 LPC_SC->PCONP |= (1UL<<31);
lolpcc 1:9d655061fa1e 849 // Enable USB host clock, port selection and AHB clock
lolpcc 1:9d655061fa1e 850 LPC_USB->USBClkCtrl |= CLOCK_MASK;
lolpcc 1:9d655061fa1e 851 // Wait for clocks to become available
lolpcc 1:9d655061fa1e 852 while ((LPC_USB->USBClkSt & CLOCK_MASK) != CLOCK_MASK)
lolpcc 1:9d655061fa1e 853 ;
lolpcc 1:9d655061fa1e 854
lolpcc 1:9d655061fa1e 855 // We are a Host
lolpcc 1:9d655061fa1e 856 LPC_USB->OTGStCtrl |= 1;
lolpcc 1:9d655061fa1e 857 LPC_USB->USBClkCtrl &= ~PORTSEL_CLK_EN; // we don't need port selection clock until we do OTG
lolpcc 1:9d655061fa1e 858
lolpcc 1:9d655061fa1e 859 // configure USB pins
lolpcc 1:9d655061fa1e 860 LPC_PINCON->PINSEL1 &= ~((3<<26)|(3<<28));
lolpcc 1:9d655061fa1e 861 LPC_PINCON->PINSEL1 |= ((1<<26)|(1<<28)); // USB D+/D-
lolpcc 1:9d655061fa1e 862
lolpcc 1:9d655061fa1e 863 LPC_PINCON->PINSEL3 &= ~((3 << 6) | (3 << 22)); // USB_PPWR, USB_OVRCR
lolpcc 1:9d655061fa1e 864 LPC_PINCON->PINSEL3 |= ((2 << 6) | (2 << 22));
lolpcc 1:9d655061fa1e 865
lolpcc 1:9d655061fa1e 866 LPC_PINCON->PINSEL4 &= ~(3 << 18); // USB_CONNECT
lolpcc 1:9d655061fa1e 867 LPC_PINCON->PINSEL4 |= (1 << 18);
peterbarrett1967 0:606b230e5b4a 868
lolpcc 1:9d655061fa1e 869 // Reset OHCI block
lolpcc 1:9d655061fa1e 870 LPC_USB->HcControl = 0;
lolpcc 1:9d655061fa1e 871 LPC_USB->HcControlHeadED = 0;
lolpcc 1:9d655061fa1e 872 LPC_USB->HcBulkHeadED = 0;
lolpcc 1:9d655061fa1e 873
lolpcc 1:9d655061fa1e 874 LPC_USB->HcCommandStatus = HostControllerReset;
lolpcc 1:9d655061fa1e 875 LPC_USB->HcFmInterval = DEFAULT_FMINTERVAL;
lolpcc 1:9d655061fa1e 876 LPC_USB->HcPeriodicStart = FRAMEINTERVAL*90/100;
peterbarrett1967 0:606b230e5b4a 877
lolpcc 1:9d655061fa1e 878 LPC_USB->HcControl = (LPC_USB->HcControl & (~HostControllerFunctionalState)) | OperationalMask;
lolpcc 1:9d655061fa1e 879 LPC_USB->HcRhStatus = SetGlobalPower;
lolpcc 1:9d655061fa1e 880
lolpcc 1:9d655061fa1e 881 LPC_USB->HcHCCA = (u32)cca;
lolpcc 1:9d655061fa1e 882 LPC_USB->HcInterruptStatus |= LPC_USB->HcInterruptStatus;
lolpcc 1:9d655061fa1e 883 LPC_USB->HcInterruptEnable = MasterInterruptEnable | WritebackDoneHead | RootHubStatusChange | FrameNumberOverflow;
peterbarrett1967 0:606b230e5b4a 884
lolpcc 1:9d655061fa1e 885 NVIC_SetPriority(USB_IRQn, 0);
lolpcc 1:9d655061fa1e 886 NVIC_EnableIRQ(USB_IRQn);
lolpcc 1:9d655061fa1e 887 while (cca->FrameNumber < 10)
lolpcc 1:9d655061fa1e 888 ; // 10ms delay before diving in
lolpcc 1:9d655061fa1e 889 }
peterbarrett1967 0:606b230e5b4a 890 };
peterbarrett1967 0:606b230e5b4a 891
peterbarrett1967 0:606b230e5b4a 892 //====================================================================================
peterbarrett1967 0:606b230e5b4a 893 //====================================================================================
lolpcc 1:9d655061fa1e 894 // Host controller instance and Interrupt handler
peterbarrett1967 0:606b230e5b4a 895
peterbarrett1967 0:606b230e5b4a 896 static HostController _controller __attribute__((at(USB_RAM_BASE)));
peterbarrett1967 0:606b230e5b4a 897
peterbarrett1967 0:606b230e5b4a 898 extern "C" void USB_IRQHandler(void) __irq;
peterbarrett1967 0:606b230e5b4a 899 void USB_IRQHandler (void) __irq
peterbarrett1967 0:606b230e5b4a 900 {
lolpcc 1:9d655061fa1e 901 u32 int_status = LPC_USB->HcInterruptStatus;
peterbarrett1967 0:606b230e5b4a 902
lolpcc 1:9d655061fa1e 903 if (int_status & RootHubStatusChange) // Root hub status change
lolpcc 1:9d655061fa1e 904 _controller._rootHubStatusChange++; // Just flag the controller, will be processed in USBLoop
peterbarrett1967 0:606b230e5b4a 905
lolpcc 1:9d655061fa1e 906 u32 head = 0;
lolpcc 1:9d655061fa1e 907 if (int_status & WritebackDoneHead)
lolpcc 1:9d655061fa1e 908 {
lolpcc 1:9d655061fa1e 909 head = _controller.CommunicationArea.DoneHead; // Writeback Done
lolpcc 1:9d655061fa1e 910 _controller.CommunicationArea.DoneHead = 0;
lolpcc 1:9d655061fa1e 911 }
lolpcc 1:9d655061fa1e 912 LPC_USB->HcInterruptStatus = int_status;
peterbarrett1967 0:606b230e5b4a 913
lolpcc 1:9d655061fa1e 914 if (head)
lolpcc 1:9d655061fa1e 915 _controller.ProcessDoneQueue(head); // TODO - low bit can be set BUGBUG
peterbarrett1967 0:606b230e5b4a 916 }
peterbarrett1967 0:606b230e5b4a 917
peterbarrett1967 0:606b230e5b4a 918 //====================================================================================
peterbarrett1967 0:606b230e5b4a 919 //====================================================================================
lolpcc 1:9d655061fa1e 920 // API Methods
peterbarrett1967 0:606b230e5b4a 921
peterbarrett1967 0:606b230e5b4a 922 void USBInit()
peterbarrett1967 0:606b230e5b4a 923 {
lolpcc 1:9d655061fa1e 924 return _controller.Init();
peterbarrett1967 0:606b230e5b4a 925 }
peterbarrett1967 0:606b230e5b4a 926
peterbarrett1967 0:606b230e5b4a 927 void USBLoop()
peterbarrett1967 0:606b230e5b4a 928 {
lolpcc 1:9d655061fa1e 929 return _controller.Loop();
peterbarrett1967 0:606b230e5b4a 930 }
peterbarrett1967 0:606b230e5b4a 931
peterbarrett1967 0:606b230e5b4a 932 u8* USBGetBuffer(u32* len)
peterbarrett1967 0:606b230e5b4a 933 {
lolpcc 1:9d655061fa1e 934 *len = USB_RAM_SIZE - sizeof(HostController);
lolpcc 1:9d655061fa1e 935 return _controller.SRAM;
peterbarrett1967 0:606b230e5b4a 936 }
peterbarrett1967 0:606b230e5b4a 937
peterbarrett1967 0:606b230e5b4a 938 static Setup* GetSetup(int device)
peterbarrett1967 0:606b230e5b4a 939 {
lolpcc 1:9d655061fa1e 940 if (device == 0)
lolpcc 1:9d655061fa1e 941 return &_controller._setupZero;
lolpcc 1:9d655061fa1e 942
lolpcc 1:9d655061fa1e 943 if (device < 1 || device > MAX_DEVICES)
lolpcc 1:9d655061fa1e 944 return 0;
lolpcc 1:9d655061fa1e 945 return &_controller.Devices[device-1].SetupBuffer;
peterbarrett1967 0:606b230e5b4a 946 }
peterbarrett1967 0:606b230e5b4a 947
lolpcc 1:9d655061fa1e 948 // Loop until IO on endpoint is complete
peterbarrett1967 0:606b230e5b4a 949 static int WaitIODone(Endpoint* endpoint)
peterbarrett1967 0:606b230e5b4a 950 {
lolpcc 1:9d655061fa1e 951 if (endpoint->CurrentState == Endpoint::NotQueued)
lolpcc 1:9d655061fa1e 952 return 0;
lolpcc 1:9d655061fa1e 953 while (endpoint->CurrentState != Endpoint::Idle)
lolpcc 1:9d655061fa1e 954 USBLoop(); // May generate callbacks, mount or unmount devices etc
lolpcc 1:9d655061fa1e 955 int status = endpoint->Status();
lolpcc 1:9d655061fa1e 956 if (status == 0)
lolpcc 1:9d655061fa1e 957 return endpoint->Length;
lolpcc 1:9d655061fa1e 958 return -status;
peterbarrett1967 0:606b230e5b4a 959 }
peterbarrett1967 0:606b230e5b4a 960
peterbarrett1967 0:606b230e5b4a 961 int USBTransfer(int device, int ep, u8 flags, u8* data, int length, USBCallback callback, void* userData)
peterbarrett1967 0:606b230e5b4a 962 {
lolpcc 1:9d655061fa1e 963 Endpoint* endpoint = _controller.GetEndpoint(device,ep);
lolpcc 1:9d655061fa1e 964 if (!endpoint)
lolpcc 1:9d655061fa1e 965 return ERR_ENDPOINT_NOT_FOUND;
lolpcc 1:9d655061fa1e 966
lolpcc 1:9d655061fa1e 967 WaitIODone(endpoint);
lolpcc 1:9d655061fa1e 968 endpoint->Flags = flags;
lolpcc 1:9d655061fa1e 969 endpoint->Data = data;
lolpcc 1:9d655061fa1e 970 endpoint->Length = length;
lolpcc 1:9d655061fa1e 971 endpoint->Callback = callback;
lolpcc 1:9d655061fa1e 972 endpoint->UserData = userData;
lolpcc 1:9d655061fa1e 973 if (ep == 0)
lolpcc 1:9d655061fa1e 974 _controller.Transfer(endpoint,TOKEN_SETUP,(u8*)GetSetup(device),8,Endpoint::SetupQueued);
lolpcc 1:9d655061fa1e 975 else
lolpcc 1:9d655061fa1e 976 _controller.Transfer(endpoint,flags & 0x80 ? TOKEN_IN : TOKEN_OUT,data,length,Endpoint::DataQueued);
lolpcc 1:9d655061fa1e 977 if (callback)
lolpcc 1:9d655061fa1e 978 return IO_PENDING;
lolpcc 1:9d655061fa1e 979 return WaitIODone(endpoint);
peterbarrett1967 0:606b230e5b4a 980 }
peterbarrett1967 0:606b230e5b4a 981
peterbarrett1967 0:606b230e5b4a 982 int USBControlTransfer(int device, int request_type, int request, int value, int index, u8* data, int length, USBCallback callback, void * userData)
peterbarrett1967 0:606b230e5b4a 983 {
lolpcc 1:9d655061fa1e 984 Setup* setup = GetSetup(device);
lolpcc 1:9d655061fa1e 985 if (!setup)
lolpcc 1:9d655061fa1e 986 return ERR_DEVICE_NOT_FOUND;
lolpcc 1:9d655061fa1e 987
lolpcc 1:9d655061fa1e 988 // Async control calls may overwrite setup buffer of previous call, so we need to wait before setting up next call
lolpcc 1:9d655061fa1e 989 WaitIODone(_controller.GetEndpoint(device,0));
lolpcc 1:9d655061fa1e 990
lolpcc 1:9d655061fa1e 991 setup->bm_request_type = request_type;
lolpcc 1:9d655061fa1e 992 setup->b_request = request;
lolpcc 1:9d655061fa1e 993 setup->w_value = value;
lolpcc 1:9d655061fa1e 994 setup->w_index = index;
lolpcc 1:9d655061fa1e 995 setup->w_length = length;
lolpcc 1:9d655061fa1e 996 return USBTransfer(device,0,request_type & DEVICE_TO_HOST,data,length,callback,userData);
peterbarrett1967 0:606b230e5b4a 997 }
peterbarrett1967 0:606b230e5b4a 998
peterbarrett1967 0:606b230e5b4a 999 int USBInterruptTransfer(int device, int ep, u8* data, int length, USBCallback callback, void* userData)
peterbarrett1967 0:606b230e5b4a 1000 {
lolpcc 1:9d655061fa1e 1001 return USBTransfer(device,ep,(ep & 0x80) | ENDPOINT_INTERRUPT,data,length,callback,userData);
peterbarrett1967 0:606b230e5b4a 1002 }
peterbarrett1967 0:606b230e5b4a 1003
peterbarrett1967 0:606b230e5b4a 1004 int USBBulkTransfer(int device, int ep, u8* data, int length, USBCallback callback, void* userData)
peterbarrett1967 0:606b230e5b4a 1005 {
lolpcc 1:9d655061fa1e 1006 return USBTransfer(device,ep,(ep & 0x80) | ENDPOINT_BULK,data,length,callback,userData);
peterbarrett1967 0:606b230e5b4a 1007 }
peterbarrett1967 0:606b230e5b4a 1008
peterbarrett1967 0:606b230e5b4a 1009 int GetDescriptor(int device, int descType,int descIndex, u8* data, int length)
peterbarrett1967 0:606b230e5b4a 1010 {
lolpcc 1:9d655061fa1e 1011 return USBControlTransfer(device,DEVICE_TO_HOST | RECIPIENT_DEVICE, GET_DESCRIPTOR,(descType << 8)|(descIndex), 0, data, length, 0);
peterbarrett1967 0:606b230e5b4a 1012 }
peterbarrett1967 0:606b230e5b4a 1013
peterbarrett1967 0:606b230e5b4a 1014 int GetString(int device, int index, char* dst, int length)
peterbarrett1967 0:606b230e5b4a 1015 {
peterbarrett1967 0:606b230e5b4a 1016 u8 buffer[255];
peterbarrett1967 0:606b230e5b4a 1017 int le = GetDescriptor(device,DESCRIPTOR_TYPE_STRING,index,buffer,sizeof(buffer));
peterbarrett1967 0:606b230e5b4a 1018 if (le < 0)
lolpcc 1:9d655061fa1e 1019 return le;
lolpcc 1:9d655061fa1e 1020 if (length < 1)
lolpcc 1:9d655061fa1e 1021 return -1;
lolpcc 1:9d655061fa1e 1022 length <<= 1;
lolpcc 1:9d655061fa1e 1023 if (le > length)
lolpcc 1:9d655061fa1e 1024 le = length;
peterbarrett1967 0:606b230e5b4a 1025 for (int j = 2; j < le; j += 2)
peterbarrett1967 0:606b230e5b4a 1026 *dst++ = buffer[j];
peterbarrett1967 0:606b230e5b4a 1027 *dst = 0;
lolpcc 1:9d655061fa1e 1028 return (le>>1)-1;
peterbarrett1967 0:606b230e5b4a 1029 }
peterbarrett1967 0:606b230e5b4a 1030
peterbarrett1967 0:606b230e5b4a 1031 int SetAddress(int device, int new_addr)
peterbarrett1967 0:606b230e5b4a 1032 {
lolpcc 1:9d655061fa1e 1033 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_DEVICE, SET_ADDRESS, new_addr, 0, 0, 0, 0);
peterbarrett1967 0:606b230e5b4a 1034 }
peterbarrett1967 0:606b230e5b4a 1035
peterbarrett1967 0:606b230e5b4a 1036 int SetConfiguration(int device, int configNum)
peterbarrett1967 0:606b230e5b4a 1037 {
lolpcc 1:9d655061fa1e 1038 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_DEVICE, SET_CONFIGURATION, configNum, 0, 0, 0, 0);
peterbarrett1967 0:606b230e5b4a 1039 }
peterbarrett1967 0:606b230e5b4a 1040
peterbarrett1967 0:606b230e5b4a 1041 int SetInterface(int device, int ifNum, int altNum)
peterbarrett1967 0:606b230e5b4a 1042 {
lolpcc 1:9d655061fa1e 1043 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_INTERFACE, SET_INTERFACE, altNum, ifNum, 0, 0, 0);
peterbarrett1967 0:606b230e5b4a 1044 }
peterbarrett1967 0:606b230e5b4a 1045
lolpcc 1:9d655061fa1e 1046 // HUB stuff
peterbarrett1967 0:606b230e5b4a 1047 int SetPortFeature(int device, int feature, int index)
peterbarrett1967 0:606b230e5b4a 1048 {
peterbarrett1967 0:606b230e5b4a 1049 return USBControlTransfer(device,HOST_TO_DEVICE | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,SET_FEATURE,feature,index,0,0);
peterbarrett1967 0:606b230e5b4a 1050 }
peterbarrett1967 0:606b230e5b4a 1051
peterbarrett1967 0:606b230e5b4a 1052 int ClearPortFeature(int device, int feature, int index)
peterbarrett1967 0:606b230e5b4a 1053 {
peterbarrett1967 0:606b230e5b4a 1054 return USBControlTransfer(device,HOST_TO_DEVICE | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,CLEAR_FEATURE,feature,index,0,0);
peterbarrett1967 0:606b230e5b4a 1055 }
peterbarrett1967 0:606b230e5b4a 1056
peterbarrett1967 0:606b230e5b4a 1057 int SetPortPower(int device, int port)
peterbarrett1967 0:606b230e5b4a 1058 {
peterbarrett1967 0:606b230e5b4a 1059 int r = SetPortFeature(device,PORT_POWER,port);
lolpcc 1:9d655061fa1e 1060 _controller.DelayMS(20); // 80ms to turn on a hubs power... DESCRIPTOR? todo
peterbarrett1967 0:606b230e5b4a 1061 return r;
peterbarrett1967 0:606b230e5b4a 1062 }
peterbarrett1967 0:606b230e5b4a 1063
peterbarrett1967 0:606b230e5b4a 1064 int SetPortReset(int device, int port)
peterbarrett1967 0:606b230e5b4a 1065 {
peterbarrett1967 0:606b230e5b4a 1066 return SetPortFeature(device,PORT_RESET,port);
peterbarrett1967 0:606b230e5b4a 1067 }
peterbarrett1967 0:606b230e5b4a 1068
peterbarrett1967 0:606b230e5b4a 1069 int GetPortStatus(int device, int port, u32* status)
peterbarrett1967 0:606b230e5b4a 1070 {
peterbarrett1967 0:606b230e5b4a 1071 return USBControlTransfer(device,DEVICE_TO_HOST | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,GET_STATUS,0,port,(u8*)status,4);
peterbarrett1967 0:606b230e5b4a 1072 }