z ysaito / USBHost3

2018.07.26

Dependencies:   FATFileSystem3 mbed-rtos

Fork of USBHost by mbed official

USBHostMSD/USBHostMSD.cpp@43:1675750cca08, 2018-07-26 (annotated)

Committer:
sayzyas
Date:
Thu Jul 26 00:20:32 2018 +0000
Revision:
43:1675750cca08
2018.07.26

Who changed what in which revision?

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sayzyas 43:1675750cca08 1 /* mbed USBHost Library
sayzyas 43:1675750cca08 2 * Copyright (c) 2006-2013 ARM Limited
sayzyas 43:1675750cca08 3 *
sayzyas 43:1675750cca08 4 * Licensed under the Apache License, Version 2.0 (the "License");
sayzyas 43:1675750cca08 5 * you may not use this file except in compliance with the License.
sayzyas 43:1675750cca08 6 * You may obtain a copy of the License at
sayzyas 43:1675750cca08 7 *
sayzyas 43:1675750cca08 8 * http://www.apache.org/licenses/LICENSE-2.0
sayzyas 43:1675750cca08 9 *
sayzyas 43:1675750cca08 10 * Unless required by applicable law or agreed to in writing, software
sayzyas 43:1675750cca08 11 * distributed under the License is distributed on an "AS IS" BASIS,
sayzyas 43:1675750cca08 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sayzyas 43:1675750cca08 13 * See the License for the specific language governing permissions and
sayzyas 43:1675750cca08 14 * limitations under the License.
sayzyas 43:1675750cca08 15 */
sayzyas 43:1675750cca08 16
sayzyas 43:1675750cca08 17 #include "USBHostMSD.h"
sayzyas 43:1675750cca08 18
sayzyas 43:1675750cca08 19 #if USBHOST_MSD
sayzyas 43:1675750cca08 20
sayzyas 43:1675750cca08 21 #include "dbg.h"
sayzyas 43:1675750cca08 22
sayzyas 43:1675750cca08 23 #define CBW_SIGNATURE 0x43425355
sayzyas 43:1675750cca08 24 #define CSW_SIGNATURE 0x53425355
sayzyas 43:1675750cca08 25
sayzyas 43:1675750cca08 26 #define DEVICE_TO_HOST 0x80
sayzyas 43:1675750cca08 27 #define HOST_TO_DEVICE 0x00
sayzyas 43:1675750cca08 28
sayzyas 43:1675750cca08 29 #define GET_MAX_LUN (0xFE)
sayzyas 43:1675750cca08 30 #define BO_MASS_STORAGE_RESET (0xFF)
sayzyas 43:1675750cca08 31
sayzyas 43:1675750cca08 32 USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir)
sayzyas 43:1675750cca08 33 {
sayzyas 43:1675750cca08 34 host = USBHost::getHostInst();
sayzyas 43:1675750cca08 35 init();
sayzyas 43:1675750cca08 36 }
sayzyas 43:1675750cca08 37
sayzyas 43:1675750cca08 38 void USBHostMSD::init() {
sayzyas 43:1675750cca08 39 dev_connected = false;
sayzyas 43:1675750cca08 40 dev = NULL;
sayzyas 43:1675750cca08 41 bulk_in = NULL;
sayzyas 43:1675750cca08 42 bulk_out = NULL;
sayzyas 43:1675750cca08 43 dev_connected = false;
sayzyas 43:1675750cca08 44 blockSize = 0;
sayzyas 43:1675750cca08 45 blockCount = 0;
sayzyas 43:1675750cca08 46 msd_intf = -1;
sayzyas 43:1675750cca08 47 msd_device_found = false;
sayzyas 43:1675750cca08 48 disk_init = false;
sayzyas 43:1675750cca08 49 dev_connected = false;
sayzyas 43:1675750cca08 50 nb_ep = 0;
sayzyas 43:1675750cca08 51 }
sayzyas 43:1675750cca08 52
sayzyas 43:1675750cca08 53
sayzyas 43:1675750cca08 54 bool USBHostMSD::connected()
sayzyas 43:1675750cca08 55 {
sayzyas 43:1675750cca08 56 return dev_connected;
sayzyas 43:1675750cca08 57 }
sayzyas 43:1675750cca08 58
sayzyas 43:1675750cca08 59 bool USBHostMSD::connect()
sayzyas 43:1675750cca08 60 {
sayzyas 43:1675750cca08 61
sayzyas 43:1675750cca08 62 if (dev_connected) {
sayzyas 43:1675750cca08 63 return true;
sayzyas 43:1675750cca08 64 }
sayzyas 43:1675750cca08 65
sayzyas 43:1675750cca08 66 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
sayzyas 43:1675750cca08 67 if ((dev = host->getDevice(i)) != NULL) {
sayzyas 43:1675750cca08 68
sayzyas 43:1675750cca08 69 USB_DBG("Trying to connect MSD device\r\n");
sayzyas 43:1675750cca08 70
sayzyas 43:1675750cca08 71 if(host->enumerate(dev, this))
sayzyas 43:1675750cca08 72 break;
sayzyas 43:1675750cca08 73
sayzyas 43:1675750cca08 74 if (msd_device_found) {
sayzyas 43:1675750cca08 75 bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN);
sayzyas 43:1675750cca08 76 bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT);
sayzyas 43:1675750cca08 77
sayzyas 43:1675750cca08 78 if (!bulk_in || !bulk_out)
sayzyas 43:1675750cca08 79 continue;
sayzyas 43:1675750cca08 80
sayzyas 43:1675750cca08 81 USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf);
sayzyas 43:1675750cca08 82 dev->setName("MSD", msd_intf);
sayzyas 43:1675750cca08 83 host->registerDriver(dev, msd_intf, this, &USBHostMSD::init);
sayzyas 43:1675750cca08 84
sayzyas 43:1675750cca08 85 dev_connected = true;
sayzyas 43:1675750cca08 86 return true;
sayzyas 43:1675750cca08 87 }
sayzyas 43:1675750cca08 88 } //if()
sayzyas 43:1675750cca08 89 } //for()
sayzyas 43:1675750cca08 90 init();
sayzyas 43:1675750cca08 91 return false;
sayzyas 43:1675750cca08 92 }
sayzyas 43:1675750cca08 93
sayzyas 43:1675750cca08 94 /*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid)
sayzyas 43:1675750cca08 95 {
sayzyas 43:1675750cca08 96 // we don't check VID/PID for MSD driver
sayzyas 43:1675750cca08 97 }
sayzyas 43:1675750cca08 98
sayzyas 43:1675750cca08 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 43:1675750cca08 100 {
sayzyas 43:1675750cca08 101 if ((msd_intf == -1) &&
sayzyas 43:1675750cca08 102 (intf_class == MSD_CLASS) &&
sayzyas 43:1675750cca08 103 (intf_subclass == 0x06) &&
sayzyas 43:1675750cca08 104 (intf_protocol == 0x50)) {
sayzyas 43:1675750cca08 105 msd_intf = intf_nb;
sayzyas 43:1675750cca08 106 return true;
sayzyas 43:1675750cca08 107 }
sayzyas 43:1675750cca08 108 return false;
sayzyas 43:1675750cca08 109 }
sayzyas 43:1675750cca08 110
sayzyas 43:1675750cca08 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 43:1675750cca08 112 {
sayzyas 43:1675750cca08 113 if (intf_nb == msd_intf) {
sayzyas 43:1675750cca08 114 if (type == BULK_ENDPOINT) {
sayzyas 43:1675750cca08 115 nb_ep++;
sayzyas 43:1675750cca08 116 if (nb_ep == 2)
sayzyas 43:1675750cca08 117 msd_device_found = true;
sayzyas 43:1675750cca08 118 return true;
sayzyas 43:1675750cca08 119 }
sayzyas 43:1675750cca08 120 }
sayzyas 43:1675750cca08 121 return false;
sayzyas 43:1675750cca08 122 }
sayzyas 43:1675750cca08 123
sayzyas 43:1675750cca08 124
sayzyas 43:1675750cca08 125 int USBHostMSD::testUnitReady() {
sayzyas 43:1675750cca08 126 USB_DBG("Test unit ready");
sayzyas 43:1675750cca08 127 return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0);
sayzyas 43:1675750cca08 128 }
sayzyas 43:1675750cca08 129
sayzyas 43:1675750cca08 130
sayzyas 43:1675750cca08 131 int USBHostMSD::readCapacity() {
sayzyas 43:1675750cca08 132 USB_DBG("Read capacity");
sayzyas 43:1675750cca08 133 uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0};
sayzyas 43:1675750cca08 134 uint8_t result[8];
sayzyas 43:1675750cca08 135 int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8);
sayzyas 43:1675750cca08 136 if (status == 0) {
sayzyas 43:1675750cca08 137 blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3];
sayzyas 43:1675750cca08 138 blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7];
sayzyas 43:1675750cca08 139 USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize);
sayzyas 43:1675750cca08 140 }
sayzyas 43:1675750cca08 141 return status;
sayzyas 43:1675750cca08 142 }
sayzyas 43:1675750cca08 143
sayzyas 43:1675750cca08 144
sayzyas 43:1675750cca08 145 int USBHostMSD::SCSIRequestSense() {
sayzyas 43:1675750cca08 146 USB_DBG("Request sense");
sayzyas 43:1675750cca08 147 uint8_t cmd[6] = {0x03,0,0,0,18,0};
sayzyas 43:1675750cca08 148 uint8_t result[18];
sayzyas 43:1675750cca08 149 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18);
sayzyas 43:1675750cca08 150 return status;
sayzyas 43:1675750cca08 151 }
sayzyas 43:1675750cca08 152
sayzyas 43:1675750cca08 153
sayzyas 43:1675750cca08 154 int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code) {
sayzyas 43:1675750cca08 155 USB_DBG("Inquiry");
sayzyas 43:1675750cca08 156 uint8_t evpd = (page_code == 0) ? 0 : 1;
sayzyas 43:1675750cca08 157 uint8_t cmd[6] = {0x12, uint8_t((lun << 5) | evpd), page_code, 0, 36, 0};
sayzyas 43:1675750cca08 158 uint8_t result[36];
sayzyas 43:1675750cca08 159 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36);
sayzyas 43:1675750cca08 160 if (status == 0) {
sayzyas 43:1675750cca08 161 char vid_pid[17];
sayzyas 43:1675750cca08 162 memcpy(vid_pid, &result[8], 8);
sayzyas 43:1675750cca08 163 vid_pid[8] = 0;
sayzyas 43:1675750cca08 164 USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid);
sayzyas 43:1675750cca08 165
sayzyas 43:1675750cca08 166 memcpy(vid_pid, &result[16], 16);
sayzyas 43:1675750cca08 167 vid_pid[16] = 0;
sayzyas 43:1675750cca08 168 USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid);
sayzyas 43:1675750cca08 169
sayzyas 43:1675750cca08 170 memcpy(vid_pid, &result[32], 4);
sayzyas 43:1675750cca08 171 vid_pid[4] = 0;
sayzyas 43:1675750cca08 172 USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid);
sayzyas 43:1675750cca08 173 }
sayzyas 43:1675750cca08 174 return status;
sayzyas 43:1675750cca08 175 }
sayzyas 43:1675750cca08 176
sayzyas 43:1675750cca08 177 int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep) {
sayzyas 43:1675750cca08 178 // if ep stalled: send clear feature
sayzyas 43:1675750cca08 179 if (res == USB_TYPE_STALL_ERROR) {
sayzyas 43:1675750cca08 180 res = host->controlWrite( dev,
sayzyas 43:1675750cca08 181 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:1675750cca08 182 CLEAR_FEATURE,
sayzyas 43:1675750cca08 183 0, ep->getAddress(), NULL, 0);
sayzyas 43:1675750cca08 184 // set state to IDLE if clear feature successful
sayzyas 43:1675750cca08 185 if (res == USB_TYPE_OK) {
sayzyas 43:1675750cca08 186 ep->setState(USB_TYPE_IDLE);
sayzyas 43:1675750cca08 187 }
sayzyas 43:1675750cca08 188 }
sayzyas 43:1675750cca08 189
sayzyas 43:1675750cca08 190 if (res != USB_TYPE_OK)
sayzyas 43:1675750cca08 191 return -1;
sayzyas 43:1675750cca08 192
sayzyas 43:1675750cca08 193 return 0;
sayzyas 43:1675750cca08 194 }
sayzyas 43:1675750cca08 195
sayzyas 43:1675750cca08 196
sayzyas 43:1675750cca08 197 int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len) {
sayzyas 43:1675750cca08 198
sayzyas 43:1675750cca08 199 int res = 0;
sayzyas 43:1675750cca08 200
sayzyas 43:1675750cca08 201 cbw.Signature = CBW_SIGNATURE;
sayzyas 43:1675750cca08 202 cbw.Tag = 0;
sayzyas 43:1675750cca08 203 cbw.DataLength = transfer_len;
sayzyas 43:1675750cca08 204 cbw.Flags = flags;
sayzyas 43:1675750cca08 205 cbw.LUN = 0;
sayzyas 43:1675750cca08 206 cbw.CBLength = cmd_len;
sayzyas 43:1675750cca08 207 memset(cbw.CB,0,sizeof(cbw.CB));
sayzyas 43:1675750cca08 208 if (cmd) {
sayzyas 43:1675750cca08 209 memcpy(cbw.CB,cmd,cmd_len);
sayzyas 43:1675750cca08 210 }
sayzyas 43:1675750cca08 211
sayzyas 43:1675750cca08 212 // send the cbw
sayzyas 43:1675750cca08 213 USB_DBG("Send CBW");
sayzyas 43:1675750cca08 214 res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31);
sayzyas 43:1675750cca08 215 if (checkResult(res, bulk_out))
sayzyas 43:1675750cca08 216 return -1;
sayzyas 43:1675750cca08 217
sayzyas 43:1675750cca08 218 // data stage if needed
sayzyas 43:1675750cca08 219 if (data) {
sayzyas 43:1675750cca08 220 USB_DBG("data stage");
sayzyas 43:1675750cca08 221 if (flags == HOST_TO_DEVICE) {
sayzyas 43:1675750cca08 222
sayzyas 43:1675750cca08 223 res = host->bulkWrite(dev, bulk_out, data, transfer_len);
sayzyas 43:1675750cca08 224 if (checkResult(res, bulk_out))
sayzyas 43:1675750cca08 225 return -1;
sayzyas 43:1675750cca08 226
sayzyas 43:1675750cca08 227 } else if (flags == DEVICE_TO_HOST) {
sayzyas 43:1675750cca08 228
sayzyas 43:1675750cca08 229 res = host->bulkRead(dev, bulk_in, data, transfer_len);
sayzyas 43:1675750cca08 230 if (checkResult(res, bulk_in))
sayzyas 43:1675750cca08 231 return -1;
sayzyas 43:1675750cca08 232 }
sayzyas 43:1675750cca08 233 }
sayzyas 43:1675750cca08 234
sayzyas 43:1675750cca08 235 // status stage
sayzyas 43:1675750cca08 236 csw.Signature = 0;
sayzyas 43:1675750cca08 237 USB_DBG("Read CSW");
sayzyas 43:1675750cca08 238 res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13);
sayzyas 43:1675750cca08 239 if (checkResult(res, bulk_in))
sayzyas 43:1675750cca08 240 return -1;
sayzyas 43:1675750cca08 241
sayzyas 43:1675750cca08 242 if (csw.Signature != CSW_SIGNATURE) {
sayzyas 43:1675750cca08 243 return -1;
sayzyas 43:1675750cca08 244 }
sayzyas 43:1675750cca08 245
sayzyas 43:1675750cca08 246 USB_DBG("recv csw: status: %d", csw.Status);
sayzyas 43:1675750cca08 247
sayzyas 43:1675750cca08 248 // ModeSense?
sayzyas 43:1675750cca08 249 if ((csw.Status == 1) && (cmd[0] != 0x03)) {
sayzyas 43:1675750cca08 250 USB_DBG("request mode sense");
sayzyas 43:1675750cca08 251 return SCSIRequestSense();
sayzyas 43:1675750cca08 252 }
sayzyas 43:1675750cca08 253
sayzyas 43:1675750cca08 254 // perform reset recovery
sayzyas 43:1675750cca08 255 if ((csw.Status == 2) && (cmd[0] != 0x03)) {
sayzyas 43:1675750cca08 256
sayzyas 43:1675750cca08 257 // send Bulk-Only Mass Storage Reset request
sayzyas 43:1675750cca08 258 res = host->controlWrite( dev,
sayzyas 43:1675750cca08 259 USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
sayzyas 43:1675750cca08 260 BO_MASS_STORAGE_RESET,
sayzyas 43:1675750cca08 261 0, msd_intf, NULL, 0);
sayzyas 43:1675750cca08 262
sayzyas 43:1675750cca08 263 // unstall both endpoints
sayzyas 43:1675750cca08 264 res = host->controlWrite( dev,
sayzyas 43:1675750cca08 265 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:1675750cca08 266 CLEAR_FEATURE,
sayzyas 43:1675750cca08 267 0, bulk_in->getAddress(), NULL, 0);
sayzyas 43:1675750cca08 268
sayzyas 43:1675750cca08 269 res = host->controlWrite( dev,
sayzyas 43:1675750cca08 270 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
sayzyas 43:1675750cca08 271 CLEAR_FEATURE,
sayzyas 43:1675750cca08 272 0, bulk_out->getAddress(), NULL, 0);
sayzyas 43:1675750cca08 273
sayzyas 43:1675750cca08 274 }
sayzyas 43:1675750cca08 275
sayzyas 43:1675750cca08 276 return csw.Status;
sayzyas 43:1675750cca08 277 }
sayzyas 43:1675750cca08 278
sayzyas 43:1675750cca08 279
sayzyas 43:1675750cca08 280 int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction) {
sayzyas 43:1675750cca08 281 uint8_t cmd[10];
sayzyas 43:1675750cca08 282 memset(cmd,0,10);
sayzyas 43:1675750cca08 283 cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A;
sayzyas 43:1675750cca08 284
sayzyas 43:1675750cca08 285 cmd[2] = (block >> 24) & 0xff;
sayzyas 43:1675750cca08 286 cmd[3] = (block >> 16) & 0xff;
sayzyas 43:1675750cca08 287 cmd[4] = (block >> 8) & 0xff;
sayzyas 43:1675750cca08 288 cmd[5] = block & 0xff;
sayzyas 43:1675750cca08 289
sayzyas 43:1675750cca08 290 cmd[7] = (nbBlock >> 8) & 0xff;
sayzyas 43:1675750cca08 291 cmd[8] = nbBlock & 0xff;
sayzyas 43:1675750cca08 292
sayzyas 43:1675750cca08 293 return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock);
sayzyas 43:1675750cca08 294 }
sayzyas 43:1675750cca08 295
sayzyas 43:1675750cca08 296 int USBHostMSD::getMaxLun() {
sayzyas 43:1675750cca08 297 uint8_t buf[1], res;
sayzyas 43:1675750cca08 298 res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
sayzyas 43:1675750cca08 299 0xfe, 0, msd_intf, buf, 1);
sayzyas 43:1675750cca08 300 USB_DBG("max lun: %d", buf[0]);
sayzyas 43:1675750cca08 301 return res;
sayzyas 43:1675750cca08 302 }
sayzyas 43:1675750cca08 303
sayzyas 43:1675750cca08 304 int USBHostMSD::disk_initialize() {
sayzyas 43:1675750cca08 305 USB_DBG("FILESYSTEM: init");
sayzyas 43:1675750cca08 306 uint16_t i, timeout = 10;
sayzyas 43:1675750cca08 307
sayzyas 43:1675750cca08 308 getMaxLun();
sayzyas 43:1675750cca08 309
sayzyas 43:1675750cca08 310 for (i = 0; i < timeout; i++) {
sayzyas 43:1675750cca08 311 Thread::wait(100);
sayzyas 43:1675750cca08 312 if (!testUnitReady())
sayzyas 43:1675750cca08 313 break;
sayzyas 43:1675750cca08 314 }
sayzyas 43:1675750cca08 315
sayzyas 43:1675750cca08 316 if (i == timeout) {
sayzyas 43:1675750cca08 317 disk_init = false;
sayzyas 43:1675750cca08 318 return -1;
sayzyas 43:1675750cca08 319 }
sayzyas 43:1675750cca08 320
sayzyas 43:1675750cca08 321 inquiry(0, 0);
sayzyas 43:1675750cca08 322 disk_init = 1;
sayzyas 43:1675750cca08 323 return readCapacity();
sayzyas 43:1675750cca08 324 }
sayzyas 43:1675750cca08 325
sayzyas 43:1675750cca08 326 int USBHostMSD::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
sayzyas 43:1675750cca08 327 USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
sayzyas 43:1675750cca08 328 if (!disk_init) {
sayzyas 43:1675750cca08 329 disk_initialize();
sayzyas 43:1675750cca08 330 }
sayzyas 43:1675750cca08 331 if (!disk_init)
sayzyas 43:1675750cca08 332 return -1;
sayzyas 43:1675750cca08 333 for (uint64_t b = block_number; b < block_number + count; b++) {
sayzyas 43:1675750cca08 334 if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
sayzyas 43:1675750cca08 335 return -1;
sayzyas 43:1675750cca08 336 buffer += 512;
sayzyas 43:1675750cca08 337 }
sayzyas 43:1675750cca08 338 return 0;
sayzyas 43:1675750cca08 339 }
sayzyas 43:1675750cca08 340
sayzyas 43:1675750cca08 341 int USBHostMSD::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
sayzyas 43:1675750cca08 342 USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
sayzyas 43:1675750cca08 343 if (!disk_init) {
sayzyas 43:1675750cca08 344 disk_initialize();
sayzyas 43:1675750cca08 345 }
sayzyas 43:1675750cca08 346 if (!disk_init)
sayzyas 43:1675750cca08 347 return -1;
sayzyas 43:1675750cca08 348 for (uint64_t b = block_number; b < block_number + count; b++) {
sayzyas 43:1675750cca08 349 if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
sayzyas 43:1675750cca08 350 return -1;
sayzyas 43:1675750cca08 351 buffer += 512;
sayzyas 43:1675750cca08 352 }
sayzyas 43:1675750cca08 353 return 0;
sayzyas 43:1675750cca08 354 }
sayzyas 43:1675750cca08 355
sayzyas 43:1675750cca08 356 uint64_t USBHostMSD::disk_sectors() {
sayzyas 43:1675750cca08 357 USB_DBG("FILESYSTEM: sectors");
sayzyas 43:1675750cca08 358 if (!disk_init) {
sayzyas 43:1675750cca08 359 disk_initialize();
sayzyas 43:1675750cca08 360 }
sayzyas 43:1675750cca08 361 if (!disk_init)
sayzyas 43:1675750cca08 362 return 0;
sayzyas 43:1675750cca08 363 return blockCount;
sayzyas 43:1675750cca08 364 }
sayzyas 43:1675750cca08 365
sayzyas 43:1675750cca08 366 #endif