virtualmech / USBHost

USBHost modified for vmRideR2016b

Dependencies:   FATFileSystem mbed-rtos

Dependents:  

Fork of USBHost by mbed official

USBHostMSD/USBHostMSD.cpp@39:6ae35848290b, 2017-11-22 (annotated)

Committer:
pedrourdagomez
Date:
Wed Nov 22 15:01:41 2017 +0000
Revision:
39:6ae35848290b
Parent:
32:4e9c0e37878c 
Working Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 8:93da8ea2708b 1 /* mbed USBHost Library
samux 8:93da8ea2708b 2 * Copyright (c) 2006-2013 ARM Limited
samux 8:93da8ea2708b 3 *
samux 8:93da8ea2708b 4 * Licensed under the Apache License, Version 2.0 (the "License");
samux 8:93da8ea2708b 5 * you may not use this file except in compliance with the License.
samux 8:93da8ea2708b 6 * You may obtain a copy of the License at
samux 8:93da8ea2708b 7 *
samux 8:93da8ea2708b 8 * http://www.apache.org/licenses/LICENSE-2.0
samux 8:93da8ea2708b 9 *
samux 8:93da8ea2708b 10 * Unless required by applicable law or agreed to in writing, software
samux 8:93da8ea2708b 11 * distributed under the License is distributed on an "AS IS" BASIS,
samux 8:93da8ea2708b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
samux 8:93da8ea2708b 13 * See the License for the specific language governing permissions and
samux 8:93da8ea2708b 14 * limitations under the License.
samux 8:93da8ea2708b 15 */
mbed_official 0:a554658735bf 16
mbed_official 0:a554658735bf 17 #include "USBHostMSD.h"
mbed_official 0:a554658735bf 18
mbed_official 0:a554658735bf 19 #if USBHOST_MSD
mbed_official 0:a554658735bf 20
mbed_official 0:a554658735bf 21 #include "dbg.h"
mbed_official 0:a554658735bf 22
mbed_official 0:a554658735bf 23 #define CBW_SIGNATURE 0x43425355
mbed_official 0:a554658735bf 24 #define CSW_SIGNATURE 0x53425355
mbed_official 0:a554658735bf 25
mbed_official 0:a554658735bf 26 #define DEVICE_TO_HOST 0x80
mbed_official 0:a554658735bf 27 #define HOST_TO_DEVICE 0x00
mbed_official 0:a554658735bf 28
samux 4:b320d68e98e7 29 #define GET_MAX_LUN (0xFE)
samux 4:b320d68e98e7 30 #define BO_MASS_STORAGE_RESET (0xFF)
mbed_official 0:a554658735bf 31
JuanManuelAmador 32:4e9c0e37878c 32 extern DigitalOut myled;
JuanManuelAmador 32:4e9c0e37878c 33
mbed_official 0:a554658735bf 34 USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir)
mbed_official 0:a554658735bf 35 {
mbed_official 0:a554658735bf 36 host = USBHost::getHostInst();
mbed_official 0:a554658735bf 37 init();
mbed_official 0:a554658735bf 38 }
mbed_official 0:a554658735bf 39
mbed_official 0:a554658735bf 40 void USBHostMSD::init() {
mbed_official 0:a554658735bf 41 dev_connected = false;
mbed_official 0:a554658735bf 42 dev = NULL;
mbed_official 0:a554658735bf 43 bulk_in = NULL;
mbed_official 0:a554658735bf 44 bulk_out = NULL;
mbed_official 0:a554658735bf 45 dev_connected = false;
mbed_official 0:a554658735bf 46 blockSize = 0;
mbed_official 0:a554658735bf 47 blockCount = 0;
mbed_official 0:a554658735bf 48 msd_intf = -1;
mbed_official 0:a554658735bf 49 msd_device_found = false;
mbed_official 0:a554658735bf 50 disk_init = false;
mbed_official 0:a554658735bf 51 dev_connected = false;
samux 4:b320d68e98e7 52 nb_ep = 0;
mbed_official 0:a554658735bf 53 }
mbed_official 0:a554658735bf 54
mbed_official 0:a554658735bf 55
mbed_official 0:a554658735bf 56 bool USBHostMSD::connected()
mbed_official 0:a554658735bf 57 {
mbed_official 0:a554658735bf 58 return dev_connected;
mbed_official 0:a554658735bf 59 }
mbed_official 0:a554658735bf 60
mbed_official 0:a554658735bf 61 bool USBHostMSD::connect()
mbed_official 0:a554658735bf 62 {
mbed_official 0:a554658735bf 63
mbed_official 0:a554658735bf 64 if (dev_connected) {
mbed_official 0:a554658735bf 65 return true;
mbed_official 0:a554658735bf 66 }
mbed_official 0:a554658735bf 67
samux 5:e48791a1ef18 68 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
mbed_official 0:a554658735bf 69 if ((dev = host->getDevice(i)) != NULL) {
mbed_official 24:868cbfe611a7 70
samux 4:b320d68e98e7 71 USB_DBG("Trying to connect MSD device\r\n");
mbed_official 24:868cbfe611a7 72
mbed_official 0:a554658735bf 73 if(host->enumerate(dev, this))
mbed_official 0:a554658735bf 74 break;
mbed_official 0:a554658735bf 75
mbed_official 0:a554658735bf 76 if (msd_device_found) {
mbed_official 0:a554658735bf 77 bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN);
mbed_official 0:a554658735bf 78 bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT);
mbed_official 24:868cbfe611a7 79
mbed_official 0:a554658735bf 80 if (!bulk_in || !bulk_out)
samux 4:b320d68e98e7 81 continue;
mbed_official 24:868cbfe611a7 82
samux 4:b320d68e98e7 83 USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf);
samux 4:b320d68e98e7 84 dev->setName("MSD", msd_intf);
mbed_official 0:a554658735bf 85 host->registerDriver(dev, msd_intf, this, &USBHostMSD::init);
mbed_official 0:a554658735bf 86
mbed_official 0:a554658735bf 87 dev_connected = true;
mbed_official 0:a554658735bf 88 return true;
mbed_official 0:a554658735bf 89 }
mbed_official 0:a554658735bf 90 } //if()
mbed_official 0:a554658735bf 91 } //for()
samux 4:b320d68e98e7 92 init();
mbed_official 0:a554658735bf 93 return false;
mbed_official 0:a554658735bf 94 }
mbed_official 0:a554658735bf 95
mbed_official 0:a554658735bf 96 /*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid)
mbed_official 0:a554658735bf 97 {
mbed_official 0:a554658735bf 98 // we don't check VID/PID for MSD driver
mbed_official 0:a554658735bf 99 }
mbed_official 0:a554658735bf 100
mbed_official 0:a554658735bf 101 /*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
mbed_official 0:a554658735bf 102 {
mbed_official 0:a554658735bf 103 if ((msd_intf == -1) &&
mbed_official 0:a554658735bf 104 (intf_class == MSD_CLASS) &&
mbed_official 0:a554658735bf 105 (intf_subclass == 0x06) &&
mbed_official 0:a554658735bf 106 (intf_protocol == 0x50)) {
mbed_official 0:a554658735bf 107 msd_intf = intf_nb;
mbed_official 0:a554658735bf 108 return true;
mbed_official 0:a554658735bf 109 }
mbed_official 0:a554658735bf 110 return false;
mbed_official 0:a554658735bf 111 }
mbed_official 0:a554658735bf 112
mbed_official 0:a554658735bf 113 /*virtual*/ bool USBHostMSD::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
mbed_official 0:a554658735bf 114 {
mbed_official 0:a554658735bf 115 if (intf_nb == msd_intf) {
mbed_official 0:a554658735bf 116 if (type == BULK_ENDPOINT) {
samux 4:b320d68e98e7 117 nb_ep++;
samux 4:b320d68e98e7 118 if (nb_ep == 2)
samux 4:b320d68e98e7 119 msd_device_found = true;
mbed_official 0:a554658735bf 120 return true;
mbed_official 0:a554658735bf 121 }
mbed_official 0:a554658735bf 122 }
mbed_official 0:a554658735bf 123 return false;
mbed_official 0:a554658735bf 124 }
mbed_official 0:a554658735bf 125
mbed_official 0:a554658735bf 126
mbed_official 0:a554658735bf 127 int USBHostMSD::testUnitReady() {
samux 4:b320d68e98e7 128 USB_DBG("Test unit ready");
mbed_official 0:a554658735bf 129 return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0);
mbed_official 0:a554658735bf 130 }
mbed_official 0:a554658735bf 131
samux 4:b320d68e98e7 132
mbed_official 0:a554658735bf 133 int USBHostMSD::readCapacity() {
samux 4:b320d68e98e7 134 USB_DBG("Read capacity");
mbed_official 0:a554658735bf 135 uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0};
mbed_official 0:a554658735bf 136 uint8_t result[8];
mbed_official 0:a554658735bf 137 int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8);
mbed_official 0:a554658735bf 138 if (status == 0) {
mbed_official 0:a554658735bf 139 blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3];
mbed_official 0:a554658735bf 140 blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7];
samux 4:b320d68e98e7 141 USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize);
mbed_official 0:a554658735bf 142 }
mbed_official 0:a554658735bf 143 return status;
mbed_official 0:a554658735bf 144 }
mbed_official 0:a554658735bf 145
mbed_official 0:a554658735bf 146
mbed_official 0:a554658735bf 147 int USBHostMSD::SCSIRequestSense() {
samux 4:b320d68e98e7 148 USB_DBG("Request sense");
samux 4:b320d68e98e7 149 uint8_t cmd[6] = {0x03,0,0,0,18,0};
samux 4:b320d68e98e7 150 uint8_t result[18];
samux 4:b320d68e98e7 151 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18);
mbed_official 0:a554658735bf 152 return status;
mbed_official 0:a554658735bf 153 }
mbed_official 0:a554658735bf 154
mbed_official 0:a554658735bf 155
mbed_official 0:a554658735bf 156 int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code) {
samux 4:b320d68e98e7 157 USB_DBG("Inquiry");
mbed_official 0:a554658735bf 158 uint8_t evpd = (page_code == 0) ? 0 : 1;
mbed_official 13:b58a2204422f 159 uint8_t cmd[6] = {0x12, uint8_t((lun << 5) | evpd), page_code, 0, 36, 0};
mbed_official 0:a554658735bf 160 uint8_t result[36];
mbed_official 0:a554658735bf 161 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36);
mbed_official 0:a554658735bf 162 if (status == 0) {
samux 4:b320d68e98e7 163 char vid_pid[17];
mbed_official 0:a554658735bf 164 memcpy(vid_pid, &result[8], 8);
mbed_official 0:a554658735bf 165 vid_pid[8] = 0;
mbed_official 0:a554658735bf 166 USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid);
mbed_official 0:a554658735bf 167
samux 4:b320d68e98e7 168 memcpy(vid_pid, &result[16], 16);
samux 4:b320d68e98e7 169 vid_pid[16] = 0;
samux 4:b320d68e98e7 170 USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid);
mbed_official 0:a554658735bf 171
mbed_official 0:a554658735bf 172 memcpy(vid_pid, &result[32], 4);
mbed_official 0:a554658735bf 173 vid_pid[4] = 0;
mbed_official 0:a554658735bf 174 USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid);
mbed_official 0:a554658735bf 175 }
mbed_official 0:a554658735bf 176 return status;
mbed_official 0:a554658735bf 177 }
mbed_official 0:a554658735bf 178
mbed_official 0:a554658735bf 179 int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep) {
mbed_official 0:a554658735bf 180 // if ep stalled: send clear feature
mbed_official 0:a554658735bf 181 if (res == USB_TYPE_STALL_ERROR) {
mbed_official 0:a554658735bf 182 res = host->controlWrite( dev,
mbed_official 0:a554658735bf 183 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
mbed_official 0:a554658735bf 184 CLEAR_FEATURE,
samux 4:b320d68e98e7 185 0, ep->getAddress(), NULL, 0);
mbed_official 0:a554658735bf 186 // set state to IDLE if clear feature successful
mbed_official 0:a554658735bf 187 if (res == USB_TYPE_OK) {
mbed_official 0:a554658735bf 188 ep->setState(USB_TYPE_IDLE);
mbed_official 0:a554658735bf 189 }
mbed_official 0:a554658735bf 190 }
mbed_official 0:a554658735bf 191
mbed_official 0:a554658735bf 192 if (res != USB_TYPE_OK)
mbed_official 0:a554658735bf 193 return -1;
mbed_official 0:a554658735bf 194
mbed_official 0:a554658735bf 195 return 0;
mbed_official 0:a554658735bf 196 }
mbed_official 0:a554658735bf 197
mbed_official 0:a554658735bf 198
mbed_official 0:a554658735bf 199 int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len) {
mbed_official 0:a554658735bf 200
mbed_official 0:a554658735bf 201 int res = 0;
mbed_official 0:a554658735bf 202
mbed_official 0:a554658735bf 203 cbw.Signature = CBW_SIGNATURE;
mbed_official 0:a554658735bf 204 cbw.Tag = 0;
mbed_official 0:a554658735bf 205 cbw.DataLength = transfer_len;
mbed_official 0:a554658735bf 206 cbw.Flags = flags;
mbed_official 0:a554658735bf 207 cbw.LUN = 0;
mbed_official 0:a554658735bf 208 cbw.CBLength = cmd_len;
mbed_official 0:a554658735bf 209 memset(cbw.CB,0,sizeof(cbw.CB));
mbed_official 0:a554658735bf 210 if (cmd) {
mbed_official 0:a554658735bf 211 memcpy(cbw.CB,cmd,cmd_len);
mbed_official 0:a554658735bf 212 }
mbed_official 0:a554658735bf 213
mbed_official 0:a554658735bf 214 // send the cbw
samux 4:b320d68e98e7 215 USB_DBG("Send CBW");
mbed_official 0:a554658735bf 216 res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31);
mbed_official 0:a554658735bf 217 if (checkResult(res, bulk_out))
mbed_official 0:a554658735bf 218 return -1;
mbed_official 0:a554658735bf 219
mbed_official 0:a554658735bf 220 // data stage if needed
mbed_official 0:a554658735bf 221 if (data) {
samux 4:b320d68e98e7 222 USB_DBG("data stage");
mbed_official 0:a554658735bf 223 if (flags == HOST_TO_DEVICE) {
mbed_official 24:868cbfe611a7 224
mbed_official 0:a554658735bf 225 res = host->bulkWrite(dev, bulk_out, data, transfer_len);
mbed_official 0:a554658735bf 226 if (checkResult(res, bulk_out))
mbed_official 0:a554658735bf 227 return -1;
mbed_official 0:a554658735bf 228
mbed_official 0:a554658735bf 229 } else if (flags == DEVICE_TO_HOST) {
mbed_official 0:a554658735bf 230
mbed_official 0:a554658735bf 231 res = host->bulkRead(dev, bulk_in, data, transfer_len);
mbed_official 0:a554658735bf 232 if (checkResult(res, bulk_in))
mbed_official 0:a554658735bf 233 return -1;
mbed_official 0:a554658735bf 234 }
mbed_official 0:a554658735bf 235 }
mbed_official 0:a554658735bf 236
mbed_official 0:a554658735bf 237 // status stage
mbed_official 0:a554658735bf 238 csw.Signature = 0;
samux 4:b320d68e98e7 239 USB_DBG("Read CSW");
mbed_official 0:a554658735bf 240 res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13);
mbed_official 0:a554658735bf 241 if (checkResult(res, bulk_in))
mbed_official 0:a554658735bf 242 return -1;
mbed_official 0:a554658735bf 243
mbed_official 0:a554658735bf 244 if (csw.Signature != CSW_SIGNATURE) {
mbed_official 0:a554658735bf 245 return -1;
mbed_official 0:a554658735bf 246 }
mbed_official 24:868cbfe611a7 247
samux 4:b320d68e98e7 248 USB_DBG("recv csw: status: %d", csw.Status);
mbed_official 0:a554658735bf 249
mbed_official 0:a554658735bf 250 // ModeSense?
samux 4:b320d68e98e7 251 if ((csw.Status == 1) && (cmd[0] != 0x03)) {
samux 4:b320d68e98e7 252 USB_DBG("request mode sense");
mbed_official 0:a554658735bf 253 return SCSIRequestSense();
samux 4:b320d68e98e7 254 }
mbed_official 24:868cbfe611a7 255
samux 4:b320d68e98e7 256 // perform reset recovery
samux 4:b320d68e98e7 257 if ((csw.Status == 2) && (cmd[0] != 0x03)) {
mbed_official 24:868cbfe611a7 258
samux 4:b320d68e98e7 259 // send Bulk-Only Mass Storage Reset request
samux 4:b320d68e98e7 260 res = host->controlWrite( dev,
samux 4:b320d68e98e7 261 USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
samux 4:b320d68e98e7 262 BO_MASS_STORAGE_RESET,
samux 4:b320d68e98e7 263 0, msd_intf, NULL, 0);
mbed_official 24:868cbfe611a7 264
samux 4:b320d68e98e7 265 // unstall both endpoints
samux 4:b320d68e98e7 266 res = host->controlWrite( dev,
samux 4:b320d68e98e7 267 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
samux 4:b320d68e98e7 268 CLEAR_FEATURE,
samux 4:b320d68e98e7 269 0, bulk_in->getAddress(), NULL, 0);
mbed_official 24:868cbfe611a7 270
samux 4:b320d68e98e7 271 res = host->controlWrite( dev,
samux 4:b320d68e98e7 272 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
samux 4:b320d68e98e7 273 CLEAR_FEATURE,
samux 4:b320d68e98e7 274 0, bulk_out->getAddress(), NULL, 0);
mbed_official 24:868cbfe611a7 275
samux 4:b320d68e98e7 276 }
mbed_official 0:a554658735bf 277
mbed_official 0:a554658735bf 278 return csw.Status;
mbed_official 0:a554658735bf 279 }
mbed_official 0:a554658735bf 280
mbed_official 0:a554658735bf 281
mbed_official 0:a554658735bf 282 int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction) {
mbed_official 0:a554658735bf 283 uint8_t cmd[10];
mbed_official 0:a554658735bf 284 memset(cmd,0,10);
mbed_official 0:a554658735bf 285 cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A;
mbed_official 0:a554658735bf 286
mbed_official 0:a554658735bf 287 cmd[2] = (block >> 24) & 0xff;
mbed_official 0:a554658735bf 288 cmd[3] = (block >> 16) & 0xff;
mbed_official 0:a554658735bf 289 cmd[4] = (block >> 8) & 0xff;
mbed_official 0:a554658735bf 290 cmd[5] = block & 0xff;
mbed_official 0:a554658735bf 291
mbed_official 0:a554658735bf 292 cmd[7] = (nbBlock >> 8) & 0xff;
mbed_official 0:a554658735bf 293 cmd[8] = nbBlock & 0xff;
mbed_official 0:a554658735bf 294
mbed_official 0:a554658735bf 295 return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock);
mbed_official 0:a554658735bf 296 }
mbed_official 0:a554658735bf 297
samux 4:b320d68e98e7 298 int USBHostMSD::getMaxLun() {
samux 4:b320d68e98e7 299 uint8_t buf[1], res;
samux 4:b320d68e98e7 300 res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
samux 4:b320d68e98e7 301 0xfe, 0, msd_intf, buf, 1);
samux 4:b320d68e98e7 302 USB_DBG("max lun: %d", buf[0]);
samux 4:b320d68e98e7 303 return res;
samux 4:b320d68e98e7 304 }
mbed_official 0:a554658735bf 305
mbed_official 0:a554658735bf 306 int USBHostMSD::disk_initialize() {
mbed_official 0:a554658735bf 307 USB_DBG("FILESYSTEM: init");
mbed_official 27:4206883f4cb7 308 uint16_t i, timeout = 10;
mbed_official 24:868cbfe611a7 309
samux 4:b320d68e98e7 310 getMaxLun();
mbed_official 24:868cbfe611a7 311
mbed_official 0:a554658735bf 312 for (i = 0; i < timeout; i++) {
samux 4:b320d68e98e7 313 Thread::wait(100);
mbed_official 0:a554658735bf 314 if (!testUnitReady())
mbed_official 0:a554658735bf 315 break;
mbed_official 0:a554658735bf 316 }
mbed_official 24:868cbfe611a7 317
mbed_official 0:a554658735bf 318 if (i == timeout) {
mbed_official 0:a554658735bf 319 disk_init = false;
mbed_official 0:a554658735bf 320 return -1;
mbed_official 0:a554658735bf 321 }
mbed_official 24:868cbfe611a7 322
mbed_official 0:a554658735bf 323 inquiry(0, 0);
mbed_official 0:a554658735bf 324 disk_init = 1;
mbed_official 0:a554658735bf 325 return readCapacity();
mbed_official 0:a554658735bf 326 }
mbed_official 0:a554658735bf 327
mbed_official 26:607951c26872 328 int USBHostMSD::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
mbed_official 26:607951c26872 329 USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
mbed_official 0:a554658735bf 330 if (!disk_init) {
mbed_official 0:a554658735bf 331 disk_initialize();
mbed_official 0:a554658735bf 332 }
mbed_official 0:a554658735bf 333 if (!disk_init)
mbed_official 0:a554658735bf 334 return -1;
mbed_official 26:607951c26872 335 for (uint64_t b = block_number; b < block_number + count; b++) {
mbed_official 26:607951c26872 336 if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
mbed_official 26:607951c26872 337 return -1;
mbed_official 26:607951c26872 338 buffer += 512;
mbed_official 26:607951c26872 339 }
mbed_official 26:607951c26872 340 return 0;
mbed_official 0:a554658735bf 341 }
mbed_official 0:a554658735bf 342
mbed_official 26:607951c26872 343 int USBHostMSD::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
mbed_official 26:607951c26872 344 USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
mbed_official 0:a554658735bf 345 if (!disk_init) {
mbed_official 0:a554658735bf 346 disk_initialize();
mbed_official 0:a554658735bf 347 }
mbed_official 0:a554658735bf 348 if (!disk_init)
mbed_official 0:a554658735bf 349 return -1;
mbed_official 26:607951c26872 350 for (uint64_t b = block_number; b < block_number + count; b++) {
mbed_official 26:607951c26872 351 if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
mbed_official 26:607951c26872 352 return -1;
mbed_official 26:607951c26872 353 buffer += 512;
mbed_official 26:607951c26872 354 }
mbed_official 26:607951c26872 355 return 0;
mbed_official 0:a554658735bf 356 }
mbed_official 0:a554658735bf 357
mbed_official 0:a554658735bf 358 uint64_t USBHostMSD::disk_sectors() {
mbed_official 0:a554658735bf 359 USB_DBG("FILESYSTEM: sectors");
mbed_official 0:a554658735bf 360 if (!disk_init) {
mbed_official 0:a554658735bf 361 disk_initialize();
mbed_official 0:a554658735bf 362 }
mbed_official 0:a554658735bf 363 if (!disk_init)
mbed_official 0:a554658735bf 364 return 0;
mbed_official 0:a554658735bf 365 return blockCount;
mbed_official 0:a554658735bf 366 }
mbed_official 0:a554658735bf 367
mbed_official 0:a554658735bf 368 #endif