z ysaito / USBHost

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Dependencies:   FATFileSystem mbed-rtos

Fork of USBHost by mbed official

USBHostMSD/USBHostMSD.cpp@43:52b15824a019, 2018-07-26 (annotated)

Committer:
sayzyas
Date:
Thu Jul 26 00:18:29 2018 +0000
Revision:
43:52b15824a019
2018.07.26

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sayzyas 43:52b15824a019 1 /* mbed USBHost Library
sayzyas 43:52b15824a019 2 * Copyright (c) 2006-2013 ARM Limited
sayzyas 43:52b15824a019 3 *
sayzyas 43:52b15824a019 4 * Licensed under the Apache License, Version 2.0 (the "License");
sayzyas 43:52b15824a019 5 * you may not use this file except in compliance with the License.
sayzyas 43:52b15824a019 6 * You may obtain a copy of the License at
sayzyas 43:52b15824a019 7 *
sayzyas 43:52b15824a019 8 * http://www.apache.org/licenses/LICENSE-2.0
sayzyas 43:52b15824a019 9 *
sayzyas 43:52b15824a019 10 * Unless required by applicable law or agreed to in writing, software
sayzyas 43:52b15824a019 11 * distributed under the License is distributed on an "AS IS" BASIS,
sayzyas 43:52b15824a019 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sayzyas 43:52b15824a019 13 * See the License for the specific language governing permissions and
sayzyas 43:52b15824a019 14 * limitations under the License.
sayzyas 43:52b15824a019 15 */
sayzyas 43:52b15824a019 16
sayzyas 43:52b15824a019 17 #include "USBHostMSD.h"
sayzyas 43:52b15824a019 18
sayzyas 43:52b15824a019 19 #if USBHOST_MSD
sayzyas 43:52b15824a019 20
sayzyas 43:52b15824a019 21 #include "dbg.h"
sayzyas 43:52b15824a019 22
sayzyas 43:52b15824a019 23 #define CBW_SIGNATURE 0x43425355
sayzyas 43:52b15824a019 24 #define CSW_SIGNATURE 0x53425355
sayzyas 43:52b15824a019 25
sayzyas 43:52b15824a019 26 #define DEVICE_TO_HOST 0x80
sayzyas 43:52b15824a019 27 #define HOST_TO_DEVICE 0x00
sayzyas 43:52b15824a019 28
sayzyas 43:52b15824a019 29 #define GET_MAX_LUN (0xFE)
sayzyas 43:52b15824a019 30 #define BO_MASS_STORAGE_RESET (0xFF)
sayzyas 43:52b15824a019 31
sayzyas 43:52b15824a019 32 USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir)
sayzyas 43:52b15824a019 33 {
sayzyas 43:52b15824a019 34 host = USBHost::getHostInst();
sayzyas 43:52b15824a019 35 init();
sayzyas 43:52b15824a019 36 }
sayzyas 43:52b15824a019 37
sayzyas 43:52b15824a019 38 void USBHostMSD::init() {
sayzyas 43:52b15824a019 39 dev_connected = false;
sayzyas 43:52b15824a019 40 dev = NULL;
sayzyas 43:52b15824a019 41 bulk_in = NULL;
sayzyas 43:52b15824a019 42 bulk_out = NULL;
sayzyas 43:52b15824a019 43 dev_connected = false;
sayzyas 43:52b15824a019 44 blockSize = 0;
sayzyas 43:52b15824a019 45 blockCount = 0;
sayzyas 43:52b15824a019 46 msd_intf = -1;
sayzyas 43:52b15824a019 47 msd_device_found = false;
sayzyas 43:52b15824a019 48 disk_init = false;
sayzyas 43:52b15824a019 49 dev_connected = false;
sayzyas 43:52b15824a019 50 nb_ep = 0;
sayzyas 43:52b15824a019 51 }
sayzyas 43:52b15824a019 52
sayzyas 43:52b15824a019 53
sayzyas 43:52b15824a019 54 bool USBHostMSD::connected()
sayzyas 43:52b15824a019 55 {
sayzyas 43:52b15824a019 56 return dev_connected;
sayzyas 43:52b15824a019 57 }
sayzyas 43:52b15824a019 58
sayzyas 43:52b15824a019 59 bool USBHostMSD::connect()
sayzyas 43:52b15824a019 60 {
sayzyas 43:52b15824a019 61
sayzyas 43:52b15824a019 62 if (dev_connected) {
sayzyas 43:52b15824a019 63 return true;
sayzyas 43:52b15824a019 64 }
sayzyas 43:52b15824a019 65
sayzyas 43:52b15824a019 66 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
sayzyas 43:52b15824a019 67 if ((dev = host->getDevice(i)) != NULL) {
sayzyas 43:52b15824a019 68
sayzyas 43:52b15824a019 69 USB_DBG("Trying to connect MSD device\r\n");
sayzyas 43:52b15824a019 70
sayzyas 43:52b15824a019 71 if(host->enumerate(dev, this))
sayzyas 43:52b15824a019 72 break;
sayzyas 43:52b15824a019 73
sayzyas 43:52b15824a019 74 if (msd_device_found) {
sayzyas 43:52b15824a019 75 bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN);
sayzyas 43:52b15824a019 76 bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT);
sayzyas 43:52b15824a019 77
sayzyas 43:52b15824a019 78 if (!bulk_in || !bulk_out)
sayzyas 43:52b15824a019 79 continue;
sayzyas 43:52b15824a019 80
sayzyas 43:52b15824a019 81 USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf);
sayzyas 43:52b15824a019 82 dev->setName("MSD", msd_intf);
sayzyas 43:52b15824a019 83 host->registerDriver(dev, msd_intf, this, &USBHostMSD::init);
sayzyas 43:52b15824a019 84
sayzyas 43:52b15824a019 85 dev_connected = true;
sayzyas 43:52b15824a019 86 return true;
sayzyas 43:52b15824a019 87 }
sayzyas 43:52b15824a019 88 } //if()
sayzyas 43:52b15824a019 89 } //for()
sayzyas 43:52b15824a019 90 init();
sayzyas 43:52b15824a019 91 return false;
sayzyas 43:52b15824a019 92 }
sayzyas 43:52b15824a019 93
sayzyas 43:52b15824a019 94 /*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid)
sayzyas 43:52b15824a019 95 {
sayzyas 43:52b15824a019 96 // we don't check VID/PID for MSD driver
sayzyas 43:52b15824a019 97 }
sayzyas 43:52b15824a019 98
sayzyas 43:52b15824a019 99 /*virtual*/ bool USBHostMSD::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
sayzyas 43:52b15824a019 100 {
sayzyas 43:52b15824a019 101 if ((msd_intf == -1) &&
sayzyas 43:52b15824a019 102 (intf_class == MSD_CLASS) &&
sayzyas 43:52b15824a019 103 (intf_subclass == 0x06) &&
sayzyas 43:52b15824a019 104 (intf_protocol == 0x50)) {
sayzyas 43:52b15824a019 105 msd_intf = intf_nb;
sayzyas 43:52b15824a019 106 return true;
sayzyas 43:52b15824a019 107 }
sayzyas 43:52b15824a019 108 return false;
sayzyas 43:52b15824a019 109 }
sayzyas 43:52b15824a019 110
sayzyas 43:52b15824a019 111 /*virtual*/ bool USBHostMSD::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
sayzyas 43:52b15824a019 112 {
sayzyas 43:52b15824a019 113 if (intf_nb == msd_intf) {
sayzyas 43:52b15824a019 114 if (type == BULK_ENDPOINT) {
sayzyas 43:52b15824a019 115 nb_ep++;
sayzyas 43:52b15824a019 116 if (nb_ep == 2)
sayzyas 43:52b15824a019 117 msd_device_found = true;
sayzyas 43:52b15824a019 118 return true;
sayzyas 43:52b15824a019 119 }
sayzyas 43:52b15824a019 120 }
sayzyas 43:52b15824a019 121 return false;
sayzyas 43:52b15824a019 122 }
sayzyas 43:52b15824a019 123
sayzyas 43:52b15824a019 124
sayzyas 43:52b15824a019 125 int USBHostMSD::testUnitReady() {
sayzyas 43:52b15824a019 126 USB_DBG("Test unit ready");
sayzyas 43:52b15824a019 127 return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0);
sayzyas 43:52b15824a019 128 }
sayzyas 43:52b15824a019 129
sayzyas 43:52b15824a019 130
sayzyas 43:52b15824a019 131 int USBHostMSD::readCapacity() {
sayzyas 43:52b15824a019 132 USB_DBG("Read capacity");
sayzyas 43:52b15824a019 133 uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0};
sayzyas 43:52b15824a019 134 uint8_t result[8];
sayzyas 43:52b15824a019 135 int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8);
sayzyas 43:52b15824a019 136 if (status == 0) {
sayzyas 43:52b15824a019 137 blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3];
sayzyas 43:52b15824a019 138 blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7];
sayzyas 43:52b15824a019 139 USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize);
sayzyas 43:52b15824a019 140 }
sayzyas 43:52b15824a019 141 return status;
sayzyas 43:52b15824a019 142 }
sayzyas 43:52b15824a019 143
sayzyas 43:52b15824a019 144
sayzyas 43:52b15824a019 145 int USBHostMSD::SCSIRequestSense() {
sayzyas 43:52b15824a019 146 USB_DBG("Request sense");
sayzyas 43:52b15824a019 147 uint8_t cmd[6] = {0x03,0,0,0,18,0};
sayzyas 43:52b15824a019 148 uint8_t result[18];
sayzyas 43:52b15824a019 149 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18);
sayzyas 43:52b15824a019 150 return status;
sayzyas 43:52b15824a019 151 }
sayzyas 43:52b15824a019 152
sayzyas 43:52b15824a019 153
sayzyas 43:52b15824a019 154 int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code) {
sayzyas 43:52b15824a019 155 USB_DBG("Inquiry");
sayzyas 43:52b15824a019 156 uint8_t evpd = (page_code == 0) ? 0 : 1;
sayzyas 43:52b15824a019 157 uint8_t cmd[6] = {0x12, uint8_t((lun << 5) | evpd), page_code, 0, 36, 0};
sayzyas 43:52b15824a019 158 uint8_t result[36];
sayzyas 43:52b15824a019 159 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36);
sayzyas 43:52b15824a019 160 if (status == 0) {
sayzyas 43:52b15824a019 161 char vid_pid[17];
sayzyas 43:52b15824a019 162 memcpy(vid_pid, &result[8], 8);
sayzyas 43:52b15824a019 163 vid_pid[8] = 0;
sayzyas 43:52b15824a019 164 USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid);
sayzyas 43:52b15824a019 165
sayzyas 43:52b15824a019 166 memcpy(vid_pid, &result[16], 16);
sayzyas 43:52b15824a019 167 vid_pid[16] = 0;
sayzyas 43:52b15824a019 168 USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid);
sayzyas 43:52b15824a019 169
sayzyas 43:52b15824a019 170 memcpy(vid_pid, &result[32], 4);
sayzyas 43:52b15824a019 171 vid_pid[4] = 0;
sayzyas 43:52b15824a019 172 USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid);
sayzyas 43:52b15824a019 173 }
sayzyas 43:52b15824a019 174 return status;
sayzyas 43:52b15824a019 175 }
sayzyas 43:52b15824a019 176
sayzyas 43:52b15824a019 177 int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep) {
sayzyas 43:52b15824a019 178 // if ep stalled: send clear feature
sayzyas 43:52b15824a019 179 if (res == USB_TYPE_STALL_ERROR) {
sayzyas 43:52b15824a019 180 res = host->controlWrite( dev,
sayzyas 43:52b15824a019 181 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:52b15824a019 182 CLEAR_FEATURE,
sayzyas 43:52b15824a019 183 0, ep->getAddress(), NULL, 0);
sayzyas 43:52b15824a019 184 // set state to IDLE if clear feature successful
sayzyas 43:52b15824a019 185 if (res == USB_TYPE_OK) {
sayzyas 43:52b15824a019 186 ep->setState(USB_TYPE_IDLE);
sayzyas 43:52b15824a019 187 }
sayzyas 43:52b15824a019 188 }
sayzyas 43:52b15824a019 189
sayzyas 43:52b15824a019 190 if (res != USB_TYPE_OK)
sayzyas 43:52b15824a019 191 return -1;
sayzyas 43:52b15824a019 192
sayzyas 43:52b15824a019 193 return 0;
sayzyas 43:52b15824a019 194 }
sayzyas 43:52b15824a019 195
sayzyas 43:52b15824a019 196
sayzyas 43:52b15824a019 197 int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len) {
sayzyas 43:52b15824a019 198
sayzyas 43:52b15824a019 199 int res = 0;
sayzyas 43:52b15824a019 200
sayzyas 43:52b15824a019 201 cbw.Signature = CBW_SIGNATURE;
sayzyas 43:52b15824a019 202 cbw.Tag = 0;
sayzyas 43:52b15824a019 203 cbw.DataLength = transfer_len;
sayzyas 43:52b15824a019 204 cbw.Flags = flags;
sayzyas 43:52b15824a019 205 cbw.LUN = 0;
sayzyas 43:52b15824a019 206 cbw.CBLength = cmd_len;
sayzyas 43:52b15824a019 207 memset(cbw.CB,0,sizeof(cbw.CB));
sayzyas 43:52b15824a019 208 if (cmd) {
sayzyas 43:52b15824a019 209 memcpy(cbw.CB,cmd,cmd_len);
sayzyas 43:52b15824a019 210 }
sayzyas 43:52b15824a019 211
sayzyas 43:52b15824a019 212 // send the cbw
sayzyas 43:52b15824a019 213 USB_DBG("Send CBW");
sayzyas 43:52b15824a019 214 res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31);
sayzyas 43:52b15824a019 215 if (checkResult(res, bulk_out))
sayzyas 43:52b15824a019 216 return -1;
sayzyas 43:52b15824a019 217
sayzyas 43:52b15824a019 218 // data stage if needed
sayzyas 43:52b15824a019 219 if (data) {
sayzyas 43:52b15824a019 220 USB_DBG("data stage");
sayzyas 43:52b15824a019 221 if (flags == HOST_TO_DEVICE) {
sayzyas 43:52b15824a019 222
sayzyas 43:52b15824a019 223 res = host->bulkWrite(dev, bulk_out, data, transfer_len);
sayzyas 43:52b15824a019 224 if (checkResult(res, bulk_out))
sayzyas 43:52b15824a019 225 return -1;
sayzyas 43:52b15824a019 226
sayzyas 43:52b15824a019 227 } else if (flags == DEVICE_TO_HOST) {
sayzyas 43:52b15824a019 228
sayzyas 43:52b15824a019 229 res = host->bulkRead(dev, bulk_in, data, transfer_len);
sayzyas 43:52b15824a019 230 if (checkResult(res, bulk_in))
sayzyas 43:52b15824a019 231 return -1;
sayzyas 43:52b15824a019 232 }
sayzyas 43:52b15824a019 233 }
sayzyas 43:52b15824a019 234
sayzyas 43:52b15824a019 235 // status stage
sayzyas 43:52b15824a019 236 csw.Signature = 0;
sayzyas 43:52b15824a019 237 USB_DBG("Read CSW");
sayzyas 43:52b15824a019 238 res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13);
sayzyas 43:52b15824a019 239 if (checkResult(res, bulk_in))
sayzyas 43:52b15824a019 240 return -1;
sayzyas 43:52b15824a019 241
sayzyas 43:52b15824a019 242 if (csw.Signature != CSW_SIGNATURE) {
sayzyas 43:52b15824a019 243 return -1;
sayzyas 43:52b15824a019 244 }
sayzyas 43:52b15824a019 245
sayzyas 43:52b15824a019 246 USB_DBG("recv csw: status: %d", csw.Status);
sayzyas 43:52b15824a019 247
sayzyas 43:52b15824a019 248 // ModeSense?
sayzyas 43:52b15824a019 249 if ((csw.Status == 1) && (cmd[0] != 0x03)) {
sayzyas 43:52b15824a019 250 USB_DBG("request mode sense");
sayzyas 43:52b15824a019 251 return SCSIRequestSense();
sayzyas 43:52b15824a019 252 }
sayzyas 43:52b15824a019 253
sayzyas 43:52b15824a019 254 // perform reset recovery
sayzyas 43:52b15824a019 255 if ((csw.Status == 2) && (cmd[0] != 0x03)) {
sayzyas 43:52b15824a019 256
sayzyas 43:52b15824a019 257 // send Bulk-Only Mass Storage Reset request
sayzyas 43:52b15824a019 258 res = host->controlWrite( dev,
sayzyas 43:52b15824a019 259 USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
sayzyas 43:52b15824a019 260 BO_MASS_STORAGE_RESET,
sayzyas 43:52b15824a019 261 0, msd_intf, NULL, 0);
sayzyas 43:52b15824a019 262
sayzyas 43:52b15824a019 263 // unstall both endpoints
sayzyas 43:52b15824a019 264 res = host->controlWrite( dev,
sayzyas 43:52b15824a019 265 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:52b15824a019 266 CLEAR_FEATURE,
sayzyas 43:52b15824a019 267 0, bulk_in->getAddress(), NULL, 0);
sayzyas 43:52b15824a019 268
sayzyas 43:52b15824a019 269 res = host->controlWrite( dev,
sayzyas 43:52b15824a019 270 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:52b15824a019 271 CLEAR_FEATURE,
sayzyas 43:52b15824a019 272 0, bulk_out->getAddress(), NULL, 0);
sayzyas 43:52b15824a019 273
sayzyas 43:52b15824a019 274 }
sayzyas 43:52b15824a019 275
sayzyas 43:52b15824a019 276 return csw.Status;
sayzyas 43:52b15824a019 277 }
sayzyas 43:52b15824a019 278
sayzyas 43:52b15824a019 279
sayzyas 43:52b15824a019 280 int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction) {
sayzyas 43:52b15824a019 281 uint8_t cmd[10];
sayzyas 43:52b15824a019 282 memset(cmd,0,10);
sayzyas 43:52b15824a019 283 cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A;
sayzyas 43:52b15824a019 284
sayzyas 43:52b15824a019 285 cmd[2] = (block >> 24) & 0xff;
sayzyas 43:52b15824a019 286 cmd[3] = (block >> 16) & 0xff;
sayzyas 43:52b15824a019 287 cmd[4] = (block >> 8) & 0xff;
sayzyas 43:52b15824a019 288 cmd[5] = block & 0xff;
sayzyas 43:52b15824a019 289
sayzyas 43:52b15824a019 290 cmd[7] = (nbBlock >> 8) & 0xff;
sayzyas 43:52b15824a019 291 cmd[8] = nbBlock & 0xff;
sayzyas 43:52b15824a019 292
sayzyas 43:52b15824a019 293 return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock);
sayzyas 43:52b15824a019 294 }
sayzyas 43:52b15824a019 295
sayzyas 43:52b15824a019 296 int USBHostMSD::getMaxLun() {
sayzyas 43:52b15824a019 297 uint8_t buf[1], res;
sayzyas 43:52b15824a019 298 res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
sayzyas 43:52b15824a019 299 0xfe, 0, msd_intf, buf, 1);
sayzyas 43:52b15824a019 300 USB_DBG("max lun: %d", buf[0]);
sayzyas 43:52b15824a019 301 return res;
sayzyas 43:52b15824a019 302 }
sayzyas 43:52b15824a019 303
sayzyas 43:52b15824a019 304 int USBHostMSD::disk_initialize() {
sayzyas 43:52b15824a019 305 USB_DBG("FILESYSTEM: init");
sayzyas 43:52b15824a019 306 uint16_t i, timeout = 10;
sayzyas 43:52b15824a019 307
sayzyas 43:52b15824a019 308 getMaxLun();
sayzyas 43:52b15824a019 309
sayzyas 43:52b15824a019 310 for (i = 0; i < timeout; i++) {
sayzyas 43:52b15824a019 311 Thread::wait(100);
sayzyas 43:52b15824a019 312 if (!testUnitReady())
sayzyas 43:52b15824a019 313 break;
sayzyas 43:52b15824a019 314 }
sayzyas 43:52b15824a019 315
sayzyas 43:52b15824a019 316 if (i == timeout) {
sayzyas 43:52b15824a019 317 disk_init = false;
sayzyas 43:52b15824a019 318 return -1;
sayzyas 43:52b15824a019 319 }
sayzyas 43:52b15824a019 320
sayzyas 43:52b15824a019 321 inquiry(0, 0);
sayzyas 43:52b15824a019 322 disk_init = 1;
sayzyas 43:52b15824a019 323 return readCapacity();
sayzyas 43:52b15824a019 324 }
sayzyas 43:52b15824a019 325
sayzyas 43:52b15824a019 326 int USBHostMSD::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
sayzyas 43:52b15824a019 327 USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
sayzyas 43:52b15824a019 328 if (!disk_init) {
sayzyas 43:52b15824a019 329 disk_initialize();
sayzyas 43:52b15824a019 330 }
sayzyas 43:52b15824a019 331 if (!disk_init)
sayzyas 43:52b15824a019 332 return -1;
sayzyas 43:52b15824a019 333 for (uint64_t b = block_number; b < block_number + count; b++) {
sayzyas 43:52b15824a019 334 if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
sayzyas 43:52b15824a019 335 return -1;
sayzyas 43:52b15824a019 336 buffer += 512;
sayzyas 43:52b15824a019 337 }
sayzyas 43:52b15824a019 338 return 0;
sayzyas 43:52b15824a019 339 }
sayzyas 43:52b15824a019 340
sayzyas 43:52b15824a019 341 int USBHostMSD::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
sayzyas 43:52b15824a019 342 USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
sayzyas 43:52b15824a019 343 if (!disk_init) {
sayzyas 43:52b15824a019 344 disk_initialize();
sayzyas 43:52b15824a019 345 }
sayzyas 43:52b15824a019 346 if (!disk_init)
sayzyas 43:52b15824a019 347 return -1;
sayzyas 43:52b15824a019 348 for (uint64_t b = block_number; b < block_number + count; b++) {
sayzyas 43:52b15824a019 349 if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
sayzyas 43:52b15824a019 350 return -1;
sayzyas 43:52b15824a019 351 buffer += 512;
sayzyas 43:52b15824a019 352 }
sayzyas 43:52b15824a019 353 return 0;
sayzyas 43:52b15824a019 354 }
sayzyas 43:52b15824a019 355
sayzyas 43:52b15824a019 356 uint64_t USBHostMSD::disk_sectors() {
sayzyas 43:52b15824a019 357 USB_DBG("FILESYSTEM: sectors");
sayzyas 43:52b15824a019 358 if (!disk_init) {
sayzyas 43:52b15824a019 359 disk_initialize();
sayzyas 43:52b15824a019 360 }
sayzyas 43:52b15824a019 361 if (!disk_init)
sayzyas 43:52b15824a019 362 return 0;
sayzyas 43:52b15824a019 363 return blockCount;
sayzyas 43:52b15824a019 364 }
sayzyas 43:52b15824a019 365
sayzyas 43:52b15824a019 366 #endif