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USB device stack

Dependents:   mbed-mX-USB-TEST1 USBMSD_SD_HID_HelloWorld HidTest MIDI_usb_bridge ... more

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USBMSD/USBMSD.h@71:53949e6131f6, 2017-07-27 (annotated)

Committer:
Kojto
Date:
Thu Jul 27 12:14:04 2017 +0100
Revision:
71:53949e6131f6
Parent:
47:a0cd9646ecd1 
Update libraries



Fixes the previous commmit, as some devices were not copied. USBDevice contains

now targets directory with all targets implementations

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19
samux 1:80ab0d068708 20 #ifndef USBMSD_H
samux 1:80ab0d068708 21 #define USBMSD_H
samux 1:80ab0d068708 22
samux 1:80ab0d068708 23 /* These headers are included for child class. */
samux 1:80ab0d068708 24 #include "USBEndpoints.h"
samux 1:80ab0d068708 25 #include "USBDescriptor.h"
samux 1:80ab0d068708 26 #include "USBDevice_Types.h"
samux 1:80ab0d068708 27
samux 1:80ab0d068708 28 #include "USBDevice.h"
samux 1:80ab0d068708 29
samux 1:80ab0d068708 30 /**
samux 1:80ab0d068708 31 * USBMSD class: generic class in order to use all kinds of blocks storage chip
samux 1:80ab0d068708 32 *
samux 1:80ab0d068708 33 * Introduction
samux 1:80ab0d068708 34 *
samux 1:80ab0d068708 35 * The USBMSD implements the MSD protocol. It permits to access a memory chip (flash, sdcard,...)
samux 1:80ab0d068708 36 * from a computer over USB. But this class doesn't work standalone, you need to subclass this class
samux 1:80ab0d068708 37 * and define virtual functions which are called in USBMSD.
samux 1:80ab0d068708 38 *
samux 1:80ab0d068708 39 * How to use this class with your chip ?
samux 1:80ab0d068708 40 *
samux 1:80ab0d068708 41 * You have to inherit and define some pure virtual functions (mandatory step):
samux 1:80ab0d068708 42 * - virtual int disk_read(char * data, int block): function to read a block
samux 1:80ab0d068708 43 * - virtual int disk_write(const char * data, int block): function to write a block
samux 1:80ab0d068708 44 * - virtual int disk_initialize(): function to initialize the memory
samux 1:80ab0d068708 45 * - virtual int disk_sectors(): return the number of blocks
samux 1:80ab0d068708 46 * - virtual int disk_size(): return the memory size
samux 1:80ab0d068708 47 * - virtual int disk_status(): return the status of the storage chip (0: OK, 1: not initialized, 2: no medium in the drive, 4: write protection)
samux 1:80ab0d068708 48 *
samux 1:80ab0d068708 49 * All functions names are compatible with the fat filesystem library. So you can imagine using your own class with
samux 1:80ab0d068708 50 * USBMSD and the fat filesystem library in the same program. Just be careful because there are two different parts which
samux 1:80ab0d068708 51 * will access the sd card. You can do a master/slave system using the disk_status method.
samux 1:80ab0d068708 52 *
samux 1:80ab0d068708 53 * Once these functions defined, you can call connect() (at the end of the constructor of your class for instance)
samux 1:80ab0d068708 54 * of USBMSD to connect your mass storage device. connect() will first call disk_status() to test the status of the disk.
samux 1:80ab0d068708 55 * If disk_status() returns 1 (disk not initialized), then disk_initialize() is called. After this step, connect() will collect information
samux 1:80ab0d068708 56 * such as the number of blocks and the memory size.
samux 1:80ab0d068708 57 */
samux 1:80ab0d068708 58 class USBMSD: public USBDevice {
samux 1:80ab0d068708 59 public:
samux 1:80ab0d068708 60
samux 1:80ab0d068708 61 /**
samux 1:80ab0d068708 62 * Constructor
samux 1:80ab0d068708 63 *
samux 1:80ab0d068708 64 * @param vendor_id Your vendor_id
samux 1:80ab0d068708 65 * @param product_id Your product_id
samux 1:80ab0d068708 66 * @param product_release Your preoduct_release
samux 1:80ab0d068708 67 */
samux 1:80ab0d068708 68 USBMSD(uint16_t vendor_id = 0x0703, uint16_t product_id = 0x0104, uint16_t product_release = 0x0001);
samux 1:80ab0d068708 69
samux 1:80ab0d068708 70 /**
samux 1:80ab0d068708 71 * Connect the USB MSD device. Establish disk initialization before really connect the device.
samux 1:80ab0d068708 72 *
mbed_official 18:78bdbce94509 73 * @param blocking if not configured
samux 1:80ab0d068708 74 * @returns true if successful
samux 1:80ab0d068708 75 */
mbed_official 18:78bdbce94509 76 bool connect(bool blocking = true);
samux 1:80ab0d068708 77
bogdanm 14:d495202c90f4 78 /**
bogdanm 14:d495202c90f4 79 * Disconnect the USB MSD device.
bogdanm 14:d495202c90f4 80 */
bogdanm 14:d495202c90f4 81 void disconnect();
mbed_official 25:7c72828865f3 82
bogdanm 14:d495202c90f4 83 /**
bogdanm 14:d495202c90f4 84 * Destructor
bogdanm 14:d495202c90f4 85 */
bogdanm 14:d495202c90f4 86 ~USBMSD();
samux 1:80ab0d068708 87
samux 1:80ab0d068708 88 protected:
samux 1:80ab0d068708 89
samux 1:80ab0d068708 90 /*
mbed_official 29:b7a0ea455a0c 91 * read one or more blocks on a storage chip
samux 1:80ab0d068708 92 *
samux 1:80ab0d068708 93 * @param data pointer where will be stored read data
mbed_official 29:b7a0ea455a0c 94 * @param block starting block number
mbed_official 29:b7a0ea455a0c 95 * @param count number of blocks to read
samux 1:80ab0d068708 96 * @returns 0 if successful
samux 1:80ab0d068708 97 */
mbed_official 29:b7a0ea455a0c 98 virtual int disk_read(uint8_t* data, uint64_t block, uint8_t count) = 0;
samux 1:80ab0d068708 99
samux 1:80ab0d068708 100 /*
mbed_official 29:b7a0ea455a0c 101 * write one or more blocks on a storage chip
samux 1:80ab0d068708 102 *
samux 1:80ab0d068708 103 * @param data data to write
mbed_official 29:b7a0ea455a0c 104 * @param block starting block number
mbed_official 29:b7a0ea455a0c 105 * @param count number of blocks to write
samux 1:80ab0d068708 106 * @returns 0 if successful
samux 1:80ab0d068708 107 */
mbed_official 29:b7a0ea455a0c 108 virtual int disk_write(const uint8_t* data, uint64_t block, uint8_t count) = 0;
samux 1:80ab0d068708 109
samux 1:80ab0d068708 110 /*
samux 1:80ab0d068708 111 * Disk initilization
samux 1:80ab0d068708 112 */
samux 1:80ab0d068708 113 virtual int disk_initialize() = 0;
samux 1:80ab0d068708 114
samux 1:80ab0d068708 115 /*
samux 1:80ab0d068708 116 * Return the number of blocks
samux 1:80ab0d068708 117 *
samux 1:80ab0d068708 118 * @returns number of blocks
samux 1:80ab0d068708 119 */
samux 7:f8f057664123 120 virtual uint64_t disk_sectors() = 0;
samux 1:80ab0d068708 121
samux 1:80ab0d068708 122 /*
samux 1:80ab0d068708 123 * Return memory size
samux 1:80ab0d068708 124 *
samux 1:80ab0d068708 125 * @returns memory size
samux 1:80ab0d068708 126 */
samux 7:f8f057664123 127 virtual uint64_t disk_size() = 0;
samux 1:80ab0d068708 128
samux 1:80ab0d068708 129
samux 1:80ab0d068708 130 /*
samux 1:80ab0d068708 131 * To check the status of the storage chip
samux 1:80ab0d068708 132 *
samux 1:80ab0d068708 133 * @returns status: 0: OK, 1: disk not initialized, 2: no medium in the drive, 4: write protected
samux 1:80ab0d068708 134 */
samux 1:80ab0d068708 135 virtual int disk_status() = 0;
samux 1:80ab0d068708 136
samux 1:80ab0d068708 137 /*
samux 1:80ab0d068708 138 * Get string product descriptor
samux 1:80ab0d068708 139 *
samux 1:80ab0d068708 140 * @returns pointer to the string product descriptor
samux 1:80ab0d068708 141 */
samux 1:80ab0d068708 142 virtual uint8_t * stringIproductDesc();
samux 1:80ab0d068708 143
samux 1:80ab0d068708 144 /*
samux 1:80ab0d068708 145 * Get string interface descriptor
samux 1:80ab0d068708 146 *
samux 1:80ab0d068708 147 * @returns pointer to the string interface descriptor
samux 1:80ab0d068708 148 */
samux 1:80ab0d068708 149 virtual uint8_t * stringIinterfaceDesc();
samux 1:80ab0d068708 150
samux 1:80ab0d068708 151 /*
samux 1:80ab0d068708 152 * Get configuration descriptor
samux 1:80ab0d068708 153 *
samux 1:80ab0d068708 154 * @returns pointer to the configuration descriptor
samux 1:80ab0d068708 155 */
samux 1:80ab0d068708 156 virtual uint8_t * configurationDesc();
samux 1:80ab0d068708 157
samux 1:80ab0d068708 158 /*
samux 1:80ab0d068708 159 * Callback called when a packet is received
samux 1:80ab0d068708 160 */
mbed_official 47:a0cd9646ecd1 161 virtual bool EPBULK_OUT_callback();
samux 1:80ab0d068708 162
samux 1:80ab0d068708 163 /*
samux 1:80ab0d068708 164 * Callback called when a packet has been sent
samux 1:80ab0d068708 165 */
mbed_official 47:a0cd9646ecd1 166 virtual bool EPBULK_IN_callback();
samux 1:80ab0d068708 167
samux 1:80ab0d068708 168 /*
samux 1:80ab0d068708 169 * Set configuration of device. Add endpoints
samux 1:80ab0d068708 170 */
samux 1:80ab0d068708 171 virtual bool USBCallback_setConfiguration(uint8_t configuration);
samux 1:80ab0d068708 172
samux 1:80ab0d068708 173 /*
samux 1:80ab0d068708 174 * Callback called to process class specific requests
samux 1:80ab0d068708 175 */
samux 1:80ab0d068708 176 virtual bool USBCallback_request();
samux 1:80ab0d068708 177
samux 1:80ab0d068708 178
samux 1:80ab0d068708 179 private:
samux 1:80ab0d068708 180
samux 1:80ab0d068708 181 // MSC Bulk-only Stage
samux 1:80ab0d068708 182 enum Stage {
samux 1:80ab0d068708 183 READ_CBW, // wait a CBW
samux 1:80ab0d068708 184 ERROR, // error
samux 1:80ab0d068708 185 PROCESS_CBW, // process a CBW request
samux 1:80ab0d068708 186 SEND_CSW, // send a CSW
samux 1:80ab0d068708 187 WAIT_CSW, // wait that a CSW has been effectively sent
samux 1:80ab0d068708 188 };
samux 1:80ab0d068708 189
samux 1:80ab0d068708 190 // Bulk-only CBW
emilmont 10:1e3d126a322b 191 typedef struct {
samux 1:80ab0d068708 192 uint32_t Signature;
samux 1:80ab0d068708 193 uint32_t Tag;
samux 1:80ab0d068708 194 uint32_t DataLength;
samux 1:80ab0d068708 195 uint8_t Flags;
samux 1:80ab0d068708 196 uint8_t LUN;
samux 1:80ab0d068708 197 uint8_t CBLength;
samux 1:80ab0d068708 198 uint8_t CB[16];
bogdanm 11:eeb3cbbaa996 199 } PACKED CBW;
samux 1:80ab0d068708 200
samux 1:80ab0d068708 201 // Bulk-only CSW
emilmont 10:1e3d126a322b 202 typedef struct {
samux 1:80ab0d068708 203 uint32_t Signature;
samux 1:80ab0d068708 204 uint32_t Tag;
samux 1:80ab0d068708 205 uint32_t DataResidue;
samux 1:80ab0d068708 206 uint8_t Status;
bogdanm 11:eeb3cbbaa996 207 } PACKED CSW;
samux 1:80ab0d068708 208
samux 1:80ab0d068708 209 //state of the bulk-only state machine
samux 1:80ab0d068708 210 Stage stage;
samux 1:80ab0d068708 211
samux 1:80ab0d068708 212 // current CBW
samux 1:80ab0d068708 213 CBW cbw;
samux 1:80ab0d068708 214
samux 1:80ab0d068708 215 // CSW which will be sent
samux 1:80ab0d068708 216 CSW csw;
samux 1:80ab0d068708 217
samux 1:80ab0d068708 218 // addr where will be read or written data
samux 1:80ab0d068708 219 uint32_t addr;
samux 1:80ab0d068708 220
samux 1:80ab0d068708 221 // length of a reading or writing
samux 1:80ab0d068708 222 uint32_t length;
samux 1:80ab0d068708 223
samux 1:80ab0d068708 224 // memory OK (after a memoryVerify)
samux 1:80ab0d068708 225 bool memOK;
samux 1:80ab0d068708 226
samux 1:80ab0d068708 227 // cache in RAM before writing in memory. Useful also to read a block.
samux 1:80ab0d068708 228 uint8_t * page;
samux 1:80ab0d068708 229
samux 1:80ab0d068708 230 int BlockSize;
samux 7:f8f057664123 231 uint64_t MemorySize;
samux 7:f8f057664123 232 uint64_t BlockCount;
samux 1:80ab0d068708 233
samux 1:80ab0d068708 234 void CBWDecode(uint8_t * buf, uint16_t size);
samux 1:80ab0d068708 235 void sendCSW (void);
samux 1:80ab0d068708 236 bool inquiryRequest (void);
samux 1:80ab0d068708 237 bool write (uint8_t * buf, uint16_t size);
samux 1:80ab0d068708 238 bool readFormatCapacity();
samux 1:80ab0d068708 239 bool readCapacity (void);
samux 1:80ab0d068708 240 bool infoTransfer (void);
samux 1:80ab0d068708 241 void memoryRead (void);
samux 1:80ab0d068708 242 bool modeSense6 (void);
samux 1:80ab0d068708 243 void testUnitReady (void);
samux 1:80ab0d068708 244 bool requestSense (void);
samux 1:80ab0d068708 245 void memoryVerify (uint8_t * buf, uint16_t size);
samux 1:80ab0d068708 246 void memoryWrite (uint8_t * buf, uint16_t size);
samux 1:80ab0d068708 247 void reset();
samux 1:80ab0d068708 248 void fail();
samux 1:80ab0d068708 249 };
samux 1:80ab0d068708 250
samux 8:335f2506f422 251 #endif