mbed official / USBHost

USBHost library. NOTE: This library is only officially supported on the LPC1768 platform. For more information, please see the handbook page.

Dependencies:   FATFileSystem mbed-rtos

Dependents:   BTstack WallbotWii SD to Flash Data Transfer USBHost-MSD_HelloWorld ... more

Legacy Warning

This is an mbed 2 library. To learn more about mbed OS 5, visit the docs.

Pull requests against this repository are no longer supported. Please raise against mbed OS 5 as documented above.

USBHostMSD/USBHostMSD.cpp@40:7c3b59bb364e, 2017-08-17 (annotated)

Committer:
Anna Bridge
Date:
Thu Aug 17 18:12:22 2017 +0100
Revision:
40:7c3b59bb364e
Parent:
37:f1e388e7b752 
DISCO_L475VG_IOT01A: Add support of USBHost

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
mbed_official 0:a554658735bf 32 USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir)
mbed_official 0:a554658735bf 33 {
mbed_official 0:a554658735bf 34 host = USBHost::getHostInst();
mbed_official 0:a554658735bf 35 init();
mbed_official 0:a554658735bf 36 }
mbed_official 0:a554658735bf 37
mbed_official 0:a554658735bf 38 void USBHostMSD::init() {
mbed_official 0:a554658735bf 39 dev_connected = false;
mbed_official 0:a554658735bf 40 dev = NULL;
mbed_official 0:a554658735bf 41 bulk_in = NULL;
mbed_official 0:a554658735bf 42 bulk_out = NULL;
mbed_official 0:a554658735bf 43 dev_connected = false;
mbed_official 0:a554658735bf 44 blockSize = 0;
mbed_official 0:a554658735bf 45 blockCount = 0;
mbed_official 0:a554658735bf 46 msd_intf = -1;
mbed_official 0:a554658735bf 47 msd_device_found = false;
mbed_official 0:a554658735bf 48 disk_init = false;
mbed_official 0:a554658735bf 49 dev_connected = false;
samux 4:b320d68e98e7 50 nb_ep = 0;
mbed_official 0:a554658735bf 51 }
mbed_official 0:a554658735bf 52
mbed_official 0:a554658735bf 53
mbed_official 0:a554658735bf 54 bool USBHostMSD::connected()
mbed_official 0:a554658735bf 55 {
mbed_official 0:a554658735bf 56 return dev_connected;
mbed_official 0:a554658735bf 57 }
mbed_official 0:a554658735bf 58
mbed_official 0:a554658735bf 59 bool USBHostMSD::connect()
mbed_official 0:a554658735bf 60 {
mbed_official 0:a554658735bf 61
mbed_official 0:a554658735bf 62 if (dev_connected) {
mbed_official 0:a554658735bf 63 return true;
mbed_official 0:a554658735bf 64 }
mbed_official 0:a554658735bf 65
samux 5:e48791a1ef18 66 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
mbed_official 0:a554658735bf 67 if ((dev = host->getDevice(i)) != NULL) {
mbed_official 24:868cbfe611a7 68
samux 4:b320d68e98e7 69 USB_DBG("Trying to connect MSD device\r\n");
mbed_official 24:868cbfe611a7 70
mbed_official 0:a554658735bf 71 if(host->enumerate(dev, this))
mbed_official 0:a554658735bf 72 break;
mbed_official 0:a554658735bf 73
mbed_official 0:a554658735bf 74 if (msd_device_found) {
Kojto 37:f1e388e7b752 75 /* As this is done in a specific thread
Kojto 37:f1e388e7b752 76 * this lock is taken to avoid to process a disconnection in
Kojto 37:f1e388e7b752 77 * usb process during the device registering */
Kojto 37:f1e388e7b752 78 USBHost::Lock Lock(host);
Kojto 37:f1e388e7b752 79
mbed_official 0:a554658735bf 80 bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN);
mbed_official 0:a554658735bf 81 bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT);
mbed_official 24:868cbfe611a7 82
mbed_official 0:a554658735bf 83 if (!bulk_in || !bulk_out)
samux 4:b320d68e98e7 84 continue;
mbed_official 24:868cbfe611a7 85
samux 4:b320d68e98e7 86 USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf);
samux 4:b320d68e98e7 87 dev->setName("MSD", msd_intf);
mbed_official 0:a554658735bf 88 host->registerDriver(dev, msd_intf, this, &USBHostMSD::init);
mbed_official 0:a554658735bf 89
mbed_official 0:a554658735bf 90 dev_connected = true;
mbed_official 0:a554658735bf 91 return true;
mbed_official 0:a554658735bf 92 }
mbed_official 0:a554658735bf 93 } //if()
mbed_official 0:a554658735bf 94 } //for()
samux 4:b320d68e98e7 95 init();
mbed_official 0:a554658735bf 96 return false;
mbed_official 0:a554658735bf 97 }
mbed_official 0:a554658735bf 98
mbed_official 0:a554658735bf 99 /*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid)
mbed_official 0:a554658735bf 100 {
mbed_official 0:a554658735bf 101 // we don't check VID/PID for MSD driver
mbed_official 0:a554658735bf 102 }
mbed_official 0:a554658735bf 103
mbed_official 0:a554658735bf 104 /*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 105 {
mbed_official 0:a554658735bf 106 if ((msd_intf == -1) &&
mbed_official 0:a554658735bf 107 (intf_class == MSD_CLASS) &&
mbed_official 0:a554658735bf 108 (intf_subclass == 0x06) &&
mbed_official 0:a554658735bf 109 (intf_protocol == 0x50)) {
mbed_official 0:a554658735bf 110 msd_intf = intf_nb;
mbed_official 0:a554658735bf 111 return true;
mbed_official 0:a554658735bf 112 }
mbed_official 0:a554658735bf 113 return false;
mbed_official 0:a554658735bf 114 }
mbed_official 0:a554658735bf 115
mbed_official 0:a554658735bf 116 /*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 117 {
mbed_official 0:a554658735bf 118 if (intf_nb == msd_intf) {
mbed_official 0:a554658735bf 119 if (type == BULK_ENDPOINT) {
samux 4:b320d68e98e7 120 nb_ep++;
samux 4:b320d68e98e7 121 if (nb_ep == 2)
samux 4:b320d68e98e7 122 msd_device_found = true;
mbed_official 0:a554658735bf 123 return true;
mbed_official 0:a554658735bf 124 }
mbed_official 0:a554658735bf 125 }
mbed_official 0:a554658735bf 126 return false;
mbed_official 0:a554658735bf 127 }
mbed_official 0:a554658735bf 128
mbed_official 0:a554658735bf 129
Kojto 37:f1e388e7b752 130 int USBHostMSD::testUnitReady()
Kojto 37:f1e388e7b752 131 {
samux 4:b320d68e98e7 132 USB_DBG("Test unit ready");
mbed_official 0:a554658735bf 133 return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0);
mbed_official 0:a554658735bf 134 }
mbed_official 0:a554658735bf 135
samux 4:b320d68e98e7 136
Kojto 37:f1e388e7b752 137 int USBHostMSD::readCapacity()
Kojto 37:f1e388e7b752 138 {
samux 4:b320d68e98e7 139 USB_DBG("Read capacity");
mbed_official 0:a554658735bf 140 uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0};
mbed_official 0:a554658735bf 141 uint8_t result[8];
mbed_official 0:a554658735bf 142 int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8);
mbed_official 0:a554658735bf 143 if (status == 0) {
mbed_official 0:a554658735bf 144 blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3];
mbed_official 0:a554658735bf 145 blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7];
samux 4:b320d68e98e7 146 USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize);
mbed_official 0:a554658735bf 147 }
mbed_official 0:a554658735bf 148 return status;
mbed_official 0:a554658735bf 149 }
mbed_official 0:a554658735bf 150
mbed_official 0:a554658735bf 151
Kojto 37:f1e388e7b752 152 int USBHostMSD::SCSIRequestSense()
Kojto 37:f1e388e7b752 153 {
samux 4:b320d68e98e7 154 USB_DBG("Request sense");
samux 4:b320d68e98e7 155 uint8_t cmd[6] = {0x03,0,0,0,18,0};
samux 4:b320d68e98e7 156 uint8_t result[18];
samux 4:b320d68e98e7 157 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18);
mbed_official 0:a554658735bf 158 return status;
mbed_official 0:a554658735bf 159 }
mbed_official 0:a554658735bf 160
mbed_official 0:a554658735bf 161
Kojto 37:f1e388e7b752 162 int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code)
Kojto 37:f1e388e7b752 163 {
samux 4:b320d68e98e7 164 USB_DBG("Inquiry");
mbed_official 0:a554658735bf 165 uint8_t evpd = (page_code == 0) ? 0 : 1;
mbed_official 13:b58a2204422f 166 uint8_t cmd[6] = {0x12, uint8_t((lun << 5) | evpd), page_code, 0, 36, 0};
mbed_official 0:a554658735bf 167 uint8_t result[36];
mbed_official 0:a554658735bf 168 int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36);
mbed_official 0:a554658735bf 169 if (status == 0) {
samux 4:b320d68e98e7 170 char vid_pid[17];
mbed_official 0:a554658735bf 171 memcpy(vid_pid, &result[8], 8);
mbed_official 0:a554658735bf 172 vid_pid[8] = 0;
mbed_official 0:a554658735bf 173 USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid);
mbed_official 0:a554658735bf 174
samux 4:b320d68e98e7 175 memcpy(vid_pid, &result[16], 16);
samux 4:b320d68e98e7 176 vid_pid[16] = 0;
samux 4:b320d68e98e7 177 USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid);
mbed_official 0:a554658735bf 178
mbed_official 0:a554658735bf 179 memcpy(vid_pid, &result[32], 4);
mbed_official 0:a554658735bf 180 vid_pid[4] = 0;
mbed_official 0:a554658735bf 181 USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid);
mbed_official 0:a554658735bf 182 }
mbed_official 0:a554658735bf 183 return status;
mbed_official 0:a554658735bf 184 }
mbed_official 0:a554658735bf 185
Kojto 37:f1e388e7b752 186 int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep)
Kojto 37:f1e388e7b752 187 {
mbed_official 0:a554658735bf 188 // if ep stalled: send clear feature
mbed_official 0:a554658735bf 189 if (res == USB_TYPE_STALL_ERROR) {
mbed_official 0:a554658735bf 190 res = host->controlWrite( dev,
mbed_official 0:a554658735bf 191 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
mbed_official 0:a554658735bf 192 CLEAR_FEATURE,
samux 4:b320d68e98e7 193 0, ep->getAddress(), NULL, 0);
mbed_official 0:a554658735bf 194 // set state to IDLE if clear feature successful
mbed_official 0:a554658735bf 195 if (res == USB_TYPE_OK) {
mbed_official 0:a554658735bf 196 ep->setState(USB_TYPE_IDLE);
mbed_official 0:a554658735bf 197 }
mbed_official 0:a554658735bf 198 }
mbed_official 0:a554658735bf 199
mbed_official 0:a554658735bf 200 if (res != USB_TYPE_OK)
mbed_official 0:a554658735bf 201 return -1;
mbed_official 0:a554658735bf 202
mbed_official 0:a554658735bf 203 return 0;
mbed_official 0:a554658735bf 204 }
mbed_official 0:a554658735bf 205
mbed_official 0:a554658735bf 206
Kojto 37:f1e388e7b752 207 int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len)
Kojto 37:f1e388e7b752 208 {
mbed_official 0:a554658735bf 209
mbed_official 0:a554658735bf 210 int res = 0;
mbed_official 0:a554658735bf 211
mbed_official 0:a554658735bf 212 cbw.Signature = CBW_SIGNATURE;
mbed_official 0:a554658735bf 213 cbw.Tag = 0;
mbed_official 0:a554658735bf 214 cbw.DataLength = transfer_len;
mbed_official 0:a554658735bf 215 cbw.Flags = flags;
mbed_official 0:a554658735bf 216 cbw.LUN = 0;
mbed_official 0:a554658735bf 217 cbw.CBLength = cmd_len;
mbed_official 0:a554658735bf 218 memset(cbw.CB,0,sizeof(cbw.CB));
mbed_official 0:a554658735bf 219 if (cmd) {
mbed_official 0:a554658735bf 220 memcpy(cbw.CB,cmd,cmd_len);
mbed_official 0:a554658735bf 221 }
mbed_official 0:a554658735bf 222
mbed_official 0:a554658735bf 223 // send the cbw
samux 4:b320d68e98e7 224 USB_DBG("Send CBW");
mbed_official 0:a554658735bf 225 res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31);
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 // data stage if needed
mbed_official 0:a554658735bf 230 if (data) {
samux 4:b320d68e98e7 231 USB_DBG("data stage");
mbed_official 0:a554658735bf 232 if (flags == HOST_TO_DEVICE) {
mbed_official 24:868cbfe611a7 233
mbed_official 0:a554658735bf 234 res = host->bulkWrite(dev, bulk_out, data, transfer_len);
mbed_official 0:a554658735bf 235 if (checkResult(res, bulk_out))
mbed_official 0:a554658735bf 236 return -1;
mbed_official 0:a554658735bf 237
mbed_official 0:a554658735bf 238 } else if (flags == DEVICE_TO_HOST) {
mbed_official 0:a554658735bf 239
mbed_official 0:a554658735bf 240 res = host->bulkRead(dev, bulk_in, data, transfer_len);
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 }
mbed_official 0:a554658735bf 245
mbed_official 0:a554658735bf 246 // status stage
mbed_official 0:a554658735bf 247 csw.Signature = 0;
samux 4:b320d68e98e7 248 USB_DBG("Read CSW");
mbed_official 0:a554658735bf 249 res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13);
mbed_official 0:a554658735bf 250 if (checkResult(res, bulk_in))
mbed_official 0:a554658735bf 251 return -1;
mbed_official 0:a554658735bf 252
mbed_official 0:a554658735bf 253 if (csw.Signature != CSW_SIGNATURE) {
mbed_official 0:a554658735bf 254 return -1;
mbed_official 0:a554658735bf 255 }
mbed_official 24:868cbfe611a7 256
samux 4:b320d68e98e7 257 USB_DBG("recv csw: status: %d", csw.Status);
mbed_official 0:a554658735bf 258
mbed_official 0:a554658735bf 259 // ModeSense?
samux 4:b320d68e98e7 260 if ((csw.Status == 1) && (cmd[0] != 0x03)) {
samux 4:b320d68e98e7 261 USB_DBG("request mode sense");
mbed_official 0:a554658735bf 262 return SCSIRequestSense();
samux 4:b320d68e98e7 263 }
mbed_official 24:868cbfe611a7 264
samux 4:b320d68e98e7 265 // perform reset recovery
samux 4:b320d68e98e7 266 if ((csw.Status == 2) && (cmd[0] != 0x03)) {
mbed_official 24:868cbfe611a7 267
samux 4:b320d68e98e7 268 // send Bulk-Only Mass Storage Reset request
samux 4:b320d68e98e7 269 res = host->controlWrite( dev,
samux 4:b320d68e98e7 270 USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
samux 4:b320d68e98e7 271 BO_MASS_STORAGE_RESET,
samux 4:b320d68e98e7 272 0, msd_intf, NULL, 0);
mbed_official 24:868cbfe611a7 273
samux 4:b320d68e98e7 274 // unstall both endpoints
samux 4:b320d68e98e7 275 res = host->controlWrite( dev,
samux 4:b320d68e98e7 276 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
samux 4:b320d68e98e7 277 CLEAR_FEATURE,
samux 4:b320d68e98e7 278 0, bulk_in->getAddress(), NULL, 0);
mbed_official 24:868cbfe611a7 279
samux 4:b320d68e98e7 280 res = host->controlWrite( dev,
samux 4:b320d68e98e7 281 USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
samux 4:b320d68e98e7 282 CLEAR_FEATURE,
samux 4:b320d68e98e7 283 0, bulk_out->getAddress(), NULL, 0);
mbed_official 24:868cbfe611a7 284
samux 4:b320d68e98e7 285 }
mbed_official 0:a554658735bf 286
mbed_official 0:a554658735bf 287 return csw.Status;
mbed_official 0:a554658735bf 288 }
mbed_official 0:a554658735bf 289
mbed_official 0:a554658735bf 290
Kojto 37:f1e388e7b752 291 int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction)
Kojto 37:f1e388e7b752 292 {
mbed_official 0:a554658735bf 293 uint8_t cmd[10];
mbed_official 0:a554658735bf 294 memset(cmd,0,10);
mbed_official 0:a554658735bf 295 cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A;
mbed_official 0:a554658735bf 296
mbed_official 0:a554658735bf 297 cmd[2] = (block >> 24) & 0xff;
mbed_official 0:a554658735bf 298 cmd[3] = (block >> 16) & 0xff;
mbed_official 0:a554658735bf 299 cmd[4] = (block >> 8) & 0xff;
mbed_official 0:a554658735bf 300 cmd[5] = block & 0xff;
mbed_official 0:a554658735bf 301
mbed_official 0:a554658735bf 302 cmd[7] = (nbBlock >> 8) & 0xff;
mbed_official 0:a554658735bf 303 cmd[8] = nbBlock & 0xff;
mbed_official 0:a554658735bf 304
mbed_official 0:a554658735bf 305 return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock);
mbed_official 0:a554658735bf 306 }
mbed_official 0:a554658735bf 307
Kojto 37:f1e388e7b752 308 int USBHostMSD::getMaxLun()
Kojto 37:f1e388e7b752 309 {
samux 4:b320d68e98e7 310 uint8_t buf[1], res;
samux 4:b320d68e98e7 311 res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
samux 4:b320d68e98e7 312 0xfe, 0, msd_intf, buf, 1);
samux 4:b320d68e98e7 313 USB_DBG("max lun: %d", buf[0]);
samux 4:b320d68e98e7 314 return res;
samux 4:b320d68e98e7 315 }
mbed_official 0:a554658735bf 316
mbed_official 0:a554658735bf 317 int USBHostMSD::disk_initialize() {
mbed_official 0:a554658735bf 318 USB_DBG("FILESYSTEM: init");
mbed_official 27:4206883f4cb7 319 uint16_t i, timeout = 10;
mbed_official 24:868cbfe611a7 320
samux 4:b320d68e98e7 321 getMaxLun();
mbed_official 24:868cbfe611a7 322
mbed_official 0:a554658735bf 323 for (i = 0; i < timeout; i++) {
samux 4:b320d68e98e7 324 Thread::wait(100);
mbed_official 0:a554658735bf 325 if (!testUnitReady())
mbed_official 0:a554658735bf 326 break;
mbed_official 0:a554658735bf 327 }
mbed_official 24:868cbfe611a7 328
mbed_official 0:a554658735bf 329 if (i == timeout) {
mbed_official 0:a554658735bf 330 disk_init = false;
mbed_official 0:a554658735bf 331 return -1;
mbed_official 0:a554658735bf 332 }
mbed_official 24:868cbfe611a7 333
mbed_official 0:a554658735bf 334 inquiry(0, 0);
mbed_official 0:a554658735bf 335 disk_init = 1;
mbed_official 0:a554658735bf 336 return readCapacity();
mbed_official 0:a554658735bf 337 }
mbed_official 0:a554658735bf 338
mbed_official 33:6c4cab4d356f 339 int USBHostMSD::disk_write(const uint8_t* buffer, uint32_t block_number, uint32_t count) {
mbed_official 26:607951c26872 340 USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
mbed_official 0:a554658735bf 341 if (!disk_init) {
mbed_official 0:a554658735bf 342 disk_initialize();
mbed_official 0:a554658735bf 343 }
mbed_official 0:a554658735bf 344 if (!disk_init)
mbed_official 0:a554658735bf 345 return -1;
mbed_official 33:6c4cab4d356f 346 for (uint32_t b = block_number; b < block_number + count; b++) {
mbed_official 26:607951c26872 347 if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
mbed_official 26:607951c26872 348 return -1;
mbed_official 26:607951c26872 349 buffer += 512;
mbed_official 26:607951c26872 350 }
mbed_official 26:607951c26872 351 return 0;
mbed_official 0:a554658735bf 352 }
mbed_official 0:a554658735bf 353
mbed_official 33:6c4cab4d356f 354 int USBHostMSD::disk_read(uint8_t* buffer, uint32_t block_number, uint32_t count) {
mbed_official 26:607951c26872 355 USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
mbed_official 0:a554658735bf 356 if (!disk_init) {
mbed_official 0:a554658735bf 357 disk_initialize();
mbed_official 0:a554658735bf 358 }
mbed_official 0:a554658735bf 359 if (!disk_init)
mbed_official 0:a554658735bf 360 return -1;
mbed_official 33:6c4cab4d356f 361 for (uint32_t b = block_number; b < block_number + count; b++) {
mbed_official 26:607951c26872 362 if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
mbed_official 26:607951c26872 363 return -1;
mbed_official 26:607951c26872 364 buffer += 512;
mbed_official 26:607951c26872 365 }
mbed_official 26:607951c26872 366 return 0;
mbed_official 0:a554658735bf 367 }
mbed_official 0:a554658735bf 368
mbed_official 33:6c4cab4d356f 369 uint32_t USBHostMSD::disk_sectors() {
mbed_official 0:a554658735bf 370 USB_DBG("FILESYSTEM: sectors");
mbed_official 0:a554658735bf 371 if (!disk_init) {
mbed_official 0:a554658735bf 372 disk_initialize();
mbed_official 0:a554658735bf 373 }
mbed_official 0:a554658735bf 374 if (!disk_init)
mbed_official 0:a554658735bf 375 return 0;
mbed_official 0:a554658735bf 376 return blockCount;
mbed_official 0:a554658735bf 377 }
mbed_official 0:a554658735bf 378
mbed_official 0:a554658735bf 379 #endif