Renesas / USBHost_custom_Addiso

Support Isochronous transfer additionally

Dependents:   USBHostC270_example_GR-PEACH USBHostDac_example USBHostDac_Audio_in_out

Fork of USBHost_custom by Renesas

USBHostSerial/USBHostSerial.cpp@36:f8c0979c2814, 2017-01-23 (annotated)

Committer:
dkato
Date:
Mon Jan 23 06:05:50 2017 +0000
Revision:
36:f8c0979c2814
Parent:
27:4206883f4cb7
Child:
38:dd168a3e4194
Removed mbed-rtos so that it can be used with the mbed-os library.

; Partial modification of USBHostSerial.

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 "USBHostSerial.h"
mbed_official 0:a554658735bf 18
mbed_official 0:a554658735bf 19 #if USBHOST_SERIAL
mbed_official 0:a554658735bf 20
mbed_official 0:a554658735bf 21 #include "dbg.h"
mbed_official 0:a554658735bf 22
mbed_official 19:bd46ea19486b 23 #define CHECK_INTERFACE(cls,subcls,proto) \
mbed_official 19:bd46ea19486b 24 (((cls == 0xFF) && (subcls == 0xFF) && (proto == 0xFF)) /* QUALCOM CDC */ || \
mbed_official 19:bd46ea19486b 25 ((cls == SERIAL_CLASS) && (subcls == 0x00) && (proto == 0x00)) /* STANDARD CDC */ )
samux 4:b320d68e98e7 26
mbed_official 19:bd46ea19486b 27 #if (USBHOST_SERIAL <= 1)
mbed_official 0:a554658735bf 28
mbed_official 24:868cbfe611a7 29 USBHostSerial::USBHostSerial()
mbed_official 19:bd46ea19486b 30 {
mbed_official 19:bd46ea19486b 31 host = USBHost::getHostInst();
mbed_official 19:bd46ea19486b 32 ports_found = 0;
mbed_official 0:a554658735bf 33 }
mbed_official 0:a554658735bf 34
mbed_official 19:bd46ea19486b 35 void USBHostSerial::disconnect(void)
mbed_official 19:bd46ea19486b 36 {
mbed_official 19:bd46ea19486b 37 ports_found = 0;
mbed_official 19:bd46ea19486b 38 dev = NULL;
mbed_official 19:bd46ea19486b 39 }
mbed_official 19:bd46ea19486b 40
mbed_official 0:a554658735bf 41 bool USBHostSerial::connect() {
mbed_official 0:a554658735bf 42
dkato 36:f8c0979c2814 43 if (dev) {
dkato 36:f8c0979c2814 44 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
mbed_official 19:bd46ea19486b 45 USBDeviceConnected* d = host->getDevice(i);
mbed_official 19:bd46ea19486b 46 if (dev == d)
mbed_official 19:bd46ea19486b 47 return true;
mbed_official 19:bd46ea19486b 48 }
mbed_official 19:bd46ea19486b 49 disconnect();
mbed_official 0:a554658735bf 50 }
dkato 36:f8c0979c2814 51 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
mbed_official 19:bd46ea19486b 52 USBDeviceConnected* d = host->getDevice(i);
mbed_official 19:bd46ea19486b 53 if (d != NULL) {
mbed_official 24:868cbfe611a7 54
mbed_official 19:bd46ea19486b 55 USB_DBG("Trying to connect serial device \r\n");
mbed_official 19:bd46ea19486b 56 if(host->enumerate(d, this))
mbed_official 0:a554658735bf 57 break;
mbed_official 24:868cbfe611a7 58
mbed_official 19:bd46ea19486b 59 USBEndpoint* bulk_in = d->getEndpoint(port_intf, BULK_ENDPOINT, IN);
mbed_official 19:bd46ea19486b 60 USBEndpoint* bulk_out = d->getEndpoint(port_intf, BULK_ENDPOINT, OUT);
mbed_official 19:bd46ea19486b 61 if (bulk_in && bulk_out)
mbed_official 19:bd46ea19486b 62 {
mbed_official 19:bd46ea19486b 63 USBHostSerialPort::connect(host,d,port_intf,bulk_in, bulk_out);
mbed_official 19:bd46ea19486b 64 dev = d;
mbed_official 0:a554658735bf 65 }
mbed_official 0:a554658735bf 66 }
mbed_official 0:a554658735bf 67 }
mbed_official 19:bd46ea19486b 68 return dev != NULL;
mbed_official 19:bd46ea19486b 69 }
mbed_official 19:bd46ea19486b 70
mbed_official 19:bd46ea19486b 71 /*virtual*/ void USBHostSerial::setVidPid(uint16_t vid, uint16_t pid)
mbed_official 19:bd46ea19486b 72 {
mbed_official 19:bd46ea19486b 73 // we don't check VID/PID for MSD driver
mbed_official 19:bd46ea19486b 74 }
mbed_official 19:bd46ea19486b 75
mbed_official 19:bd46ea19486b 76 /*virtual*/ bool USBHostSerial::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 19:bd46ea19486b 77 {
mbed_official 24:868cbfe611a7 78 if (!ports_found &&
mbed_official 19:bd46ea19486b 79 CHECK_INTERFACE(intf_class, intf_subclass, intf_protocol)) {
mbed_official 19:bd46ea19486b 80 port_intf = intf_nb;
mbed_official 19:bd46ea19486b 81 ports_found = true;
mbed_official 19:bd46ea19486b 82 return true;
mbed_official 19:bd46ea19486b 83 }
mbed_official 19:bd46ea19486b 84 return false;
mbed_official 19:bd46ea19486b 85 }
mbed_official 19:bd46ea19486b 86
mbed_official 19:bd46ea19486b 87 /*virtual*/ bool USBHostSerial::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
mbed_official 19:bd46ea19486b 88 {
mbed_official 19:bd46ea19486b 89 if (ports_found && (intf_nb == port_intf)) {
mbed_official 24:868cbfe611a7 90 if (type == BULK_ENDPOINT)
mbed_official 19:bd46ea19486b 91 return true;
mbed_official 19:bd46ea19486b 92 }
mbed_official 0:a554658735bf 93 return false;
mbed_official 0:a554658735bf 94 }
mbed_official 0:a554658735bf 95
mbed_official 19:bd46ea19486b 96 #else // (USBHOST_SERIAL > 1)
mbed_official 19:bd46ea19486b 97
mbed_official 19:bd46ea19486b 98 //------------------------------------------------------------------------------
mbed_official 19:bd46ea19486b 99
mbed_official 24:868cbfe611a7 100 USBHostMultiSerial::USBHostMultiSerial()
mbed_official 19:bd46ea19486b 101 {
mbed_official 19:bd46ea19486b 102 host = USBHost::getHostInst();
mbed_official 19:bd46ea19486b 103 dev = NULL;
mbed_official 19:bd46ea19486b 104 memset(ports, NULL, sizeof(ports));
mbed_official 19:bd46ea19486b 105 ports_found = 0;
mbed_official 19:bd46ea19486b 106 }
mbed_official 19:bd46ea19486b 107
mbed_official 19:bd46ea19486b 108 USBHostMultiSerial::~USBHostMultiSerial()
mbed_official 19:bd46ea19486b 109 {
mbed_official 19:bd46ea19486b 110 disconnect();
mbed_official 19:bd46ea19486b 111 }
mbed_official 19:bd46ea19486b 112
mbed_official 19:bd46ea19486b 113 void USBHostMultiSerial::disconnect(void)
mbed_official 19:bd46ea19486b 114 {
mbed_official 24:868cbfe611a7 115 for (int port = 0; port < USBHOST_SERIAL; port ++)
mbed_official 19:bd46ea19486b 116 {
mbed_official 19:bd46ea19486b 117 if (ports[port])
mbed_official 19:bd46ea19486b 118 {
mbed_official 19:bd46ea19486b 119 delete ports[port];
mbed_official 19:bd46ea19486b 120 ports[port] = NULL;
mbed_official 19:bd46ea19486b 121 }
mbed_official 19:bd46ea19486b 122 }
mbed_official 19:bd46ea19486b 123 ports_found = 0;
mbed_official 19:bd46ea19486b 124 dev = NULL;
mbed_official 19:bd46ea19486b 125 }
mbed_official 19:bd46ea19486b 126
mbed_official 19:bd46ea19486b 127 bool USBHostMultiSerial::connect() {
mbed_official 19:bd46ea19486b 128
mbed_official 24:868cbfe611a7 129 if (dev)
mbed_official 19:bd46ea19486b 130 {
mbed_official 24:868cbfe611a7 131 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
mbed_official 19:bd46ea19486b 132 {
mbed_official 19:bd46ea19486b 133 USBDeviceConnected* d = host->getDevice(i);
mbed_official 19:bd46ea19486b 134 if (dev == d)
mbed_official 19:bd46ea19486b 135 return true;
mbed_official 19:bd46ea19486b 136 }
mbed_official 19:bd46ea19486b 137 disconnect();
mbed_official 19:bd46ea19486b 138 }
mbed_official 24:868cbfe611a7 139 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
mbed_official 19:bd46ea19486b 140 {
mbed_official 19:bd46ea19486b 141 USBDeviceConnected* d = host->getDevice(i);
mbed_official 19:bd46ea19486b 142 if (d != NULL) {
mbed_official 24:868cbfe611a7 143
mbed_official 19:bd46ea19486b 144 USB_DBG("Trying to connect serial device \r\n");
mbed_official 19:bd46ea19486b 145 if(host->enumerate(d, this))
mbed_official 19:bd46ea19486b 146 break;
mbed_official 24:868cbfe611a7 147
mbed_official 24:868cbfe611a7 148 for (int port = 0; port < ports_found; port ++)
mbed_official 19:bd46ea19486b 149 {
mbed_official 19:bd46ea19486b 150 USBEndpoint* bulk_in = d->getEndpoint(port_intf[port], BULK_ENDPOINT, IN);
mbed_official 19:bd46ea19486b 151 USBEndpoint* bulk_out = d->getEndpoint(port_intf[port], BULK_ENDPOINT, OUT);
mbed_official 19:bd46ea19486b 152 if (bulk_in && bulk_out)
mbed_official 19:bd46ea19486b 153 {
mbed_official 19:bd46ea19486b 154 ports[port] = new USBHostSerialPort();
mbed_official 19:bd46ea19486b 155 if (ports[port])
mbed_official 19:bd46ea19486b 156 {
mbed_official 19:bd46ea19486b 157 ports[port]->connect(host,d,port_intf[port],bulk_in, bulk_out);
mbed_official 19:bd46ea19486b 158 dev = d;
mbed_official 19:bd46ea19486b 159 }
mbed_official 19:bd46ea19486b 160 }
mbed_official 19:bd46ea19486b 161 }
mbed_official 19:bd46ea19486b 162 }
mbed_official 19:bd46ea19486b 163 }
mbed_official 19:bd46ea19486b 164 return dev != NULL;
mbed_official 19:bd46ea19486b 165 }
mbed_official 19:bd46ea19486b 166
mbed_official 19:bd46ea19486b 167 /*virtual*/ void USBHostMultiSerial::setVidPid(uint16_t vid, uint16_t pid)
mbed_official 19:bd46ea19486b 168 {
mbed_official 19:bd46ea19486b 169 // we don't check VID/PID for MSD driver
mbed_official 19:bd46ea19486b 170 }
mbed_official 19:bd46ea19486b 171
mbed_official 19:bd46ea19486b 172 /*virtual*/ bool USBHostMultiSerial::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 19:bd46ea19486b 173 {
mbed_official 24:868cbfe611a7 174 if ((ports_found < USBHOST_SERIAL) &&
mbed_official 19:bd46ea19486b 175 CHECK_INTERFACE(intf_class, intf_subclass, intf_protocol)) {
mbed_official 19:bd46ea19486b 176 port_intf[ports_found++] = intf_nb;
mbed_official 19:bd46ea19486b 177 return true;
mbed_official 19:bd46ea19486b 178 }
mbed_official 19:bd46ea19486b 179 return false;
mbed_official 19:bd46ea19486b 180 }
mbed_official 19:bd46ea19486b 181
mbed_official 19:bd46ea19486b 182 /*virtual*/ bool USBHostMultiSerial::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
mbed_official 19:bd46ea19486b 183 {
mbed_official 19:bd46ea19486b 184 if ((ports_found > 0) && (intf_nb == port_intf[ports_found-1])) {
mbed_official 24:868cbfe611a7 185 if (type == BULK_ENDPOINT)
mbed_official 19:bd46ea19486b 186 return true;
mbed_official 19:bd46ea19486b 187 }
mbed_official 19:bd46ea19486b 188 return false;
mbed_official 19:bd46ea19486b 189 }
mbed_official 19:bd46ea19486b 190
mbed_official 19:bd46ea19486b 191 #endif
mbed_official 19:bd46ea19486b 192
mbed_official 19:bd46ea19486b 193 //------------------------------------------------------------------------------
mbed_official 19:bd46ea19486b 194
mbed_official 19:bd46ea19486b 195 #define SET_LINE_CODING 0x20
mbed_official 19:bd46ea19486b 196
mbed_official 24:868cbfe611a7 197 USBHostSerialPort::USBHostSerialPort(): circ_buf()
mbed_official 19:bd46ea19486b 198 {
mbed_official 19:bd46ea19486b 199 init();
mbed_official 19:bd46ea19486b 200 }
mbed_official 19:bd46ea19486b 201
mbed_official 19:bd46ea19486b 202 void USBHostSerialPort::init(void)
mbed_official 19:bd46ea19486b 203 {
dkato 36:f8c0979c2814 204 dev_connected = false;
mbed_official 19:bd46ea19486b 205 host = NULL;
mbed_official 19:bd46ea19486b 206 dev = NULL;
dkato 36:f8c0979c2814 207 serial_intf = 0;
mbed_official 19:bd46ea19486b 208 size_bulk_in = 0;
mbed_official 19:bd46ea19486b 209 size_bulk_out = 0;
mbed_official 19:bd46ea19486b 210 bulk_in = NULL;
mbed_official 19:bd46ea19486b 211 bulk_out = NULL;
mbed_official 19:bd46ea19486b 212 line_coding.baudrate = 9600;
mbed_official 19:bd46ea19486b 213 line_coding.data_bits = 8;
mbed_official 19:bd46ea19486b 214 line_coding.parity = None;
mbed_official 19:bd46ea19486b 215 line_coding.stop_bits = 1;
mbed_official 19:bd46ea19486b 216 circ_buf.flush();
mbed_official 19:bd46ea19486b 217 }
mbed_official 19:bd46ea19486b 218
mbed_official 24:868cbfe611a7 219 void USBHostSerialPort::connect(USBHost* _host, USBDeviceConnected * _dev,
mbed_official 19:bd46ea19486b 220 uint8_t _serial_intf, USBEndpoint* _bulk_in, USBEndpoint* _bulk_out)
mbed_official 19:bd46ea19486b 221 {
mbed_official 19:bd46ea19486b 222 host = _host;
mbed_official 19:bd46ea19486b 223 dev = _dev;
mbed_official 19:bd46ea19486b 224 serial_intf = _serial_intf;
mbed_official 19:bd46ea19486b 225 bulk_in = _bulk_in;
mbed_official 19:bd46ea19486b 226 bulk_out = _bulk_out;
mbed_official 24:868cbfe611a7 227
mbed_official 19:bd46ea19486b 228 USB_INFO("New Serial device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, serial_intf);
mbed_official 19:bd46ea19486b 229 dev->setName("Serial", serial_intf);
mbed_official 19:bd46ea19486b 230 host->registerDriver(dev, serial_intf, this, &USBHostSerialPort::init);
mbed_official 27:4206883f4cb7 231 baud(9600);
mbed_official 19:bd46ea19486b 232 size_bulk_in = bulk_in->getSize();
mbed_official 19:bd46ea19486b 233 size_bulk_out = bulk_out->getSize();
mbed_official 19:bd46ea19486b 234 bulk_in->attach(this, &USBHostSerialPort::rxHandler);
mbed_official 19:bd46ea19486b 235 bulk_out->attach(this, &USBHostSerialPort::txHandler);
mbed_official 19:bd46ea19486b 236 host->bulkRead(dev, bulk_in, buf, size_bulk_in, false);
dkato 36:f8c0979c2814 237 dev_connected = true;
dkato 36:f8c0979c2814 238 }
dkato 36:f8c0979c2814 239
dkato 36:f8c0979c2814 240 bool USBHostSerialPort::connected() {
dkato 36:f8c0979c2814 241 return dev_connected;
mbed_official 19:bd46ea19486b 242 }
mbed_official 19:bd46ea19486b 243
mbed_official 19:bd46ea19486b 244 void USBHostSerialPort::rxHandler() {
mbed_official 0:a554658735bf 245 if (bulk_in) {
mbed_official 0:a554658735bf 246 int len = bulk_in->getLengthTransferred();
mbed_official 0:a554658735bf 247 if (bulk_in->getState() == USB_TYPE_IDLE) {
mbed_official 0:a554658735bf 248 for (int i = 0; i < len; i++) {
dkato 36:f8c0979c2814 249 while (circ_buf.isFull()) {
dkato 36:f8c0979c2814 250 Thread::wait(1);
dkato 36:f8c0979c2814 251 }
mbed_official 0:a554658735bf 252 circ_buf.queue(buf[i]);
mbed_official 0:a554658735bf 253 }
mbed_official 0:a554658735bf 254 rx.call();
samux 4:b320d68e98e7 255 host->bulkRead(dev, bulk_in, buf, size_bulk_in, false);
mbed_official 0:a554658735bf 256 }
mbed_official 0:a554658735bf 257 }
mbed_official 0:a554658735bf 258 }
mbed_official 0:a554658735bf 259
mbed_official 19:bd46ea19486b 260 void USBHostSerialPort::txHandler() {
mbed_official 0:a554658735bf 261 if (bulk_out) {
mbed_official 0:a554658735bf 262 if (bulk_out->getState() == USB_TYPE_IDLE) {
mbed_official 0:a554658735bf 263 tx.call();
mbed_official 0:a554658735bf 264 }
mbed_official 0:a554658735bf 265 }
mbed_official 0:a554658735bf 266 }
mbed_official 0:a554658735bf 267
mbed_official 19:bd46ea19486b 268 int USBHostSerialPort::_putc(int c) {
mbed_official 0:a554658735bf 269 if (bulk_out) {
mbed_official 0:a554658735bf 270 if (host->bulkWrite(dev, bulk_out, (uint8_t *)&c, 1) == USB_TYPE_OK) {
mbed_official 0:a554658735bf 271 return 1;
mbed_official 0:a554658735bf 272 }
mbed_official 0:a554658735bf 273 }
mbed_official 0:a554658735bf 274 return -1;
mbed_official 0:a554658735bf 275 }
mbed_official 0:a554658735bf 276
mbed_official 19:bd46ea19486b 277 void USBHostSerialPort::baud(int baudrate) {
samux 4:b320d68e98e7 278 line_coding.baudrate = baudrate;
samux 8:93da8ea2708b 279 format(line_coding.data_bits, (Parity)line_coding.parity, line_coding.stop_bits);
samux 4:b320d68e98e7 280 }
samux 4:b320d68e98e7 281
mbed_official 19:bd46ea19486b 282 void USBHostSerialPort::format(int bits, Parity parity, int stop_bits) {
samux 4:b320d68e98e7 283 line_coding.data_bits = bits;
samux 4:b320d68e98e7 284 line_coding.parity = parity;
samux 4:b320d68e98e7 285 line_coding.stop_bits = (stop_bits == 1) ? 0 : 2;
mbed_official 24:868cbfe611a7 286
samux 4:b320d68e98e7 287 // set line coding
mbed_official 13:b58a2204422f 288 host->controlWrite( dev,
mbed_official 13:b58a2204422f 289 USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
mbed_official 13:b58a2204422f 290 SET_LINE_CODING,
mbed_official 13:b58a2204422f 291 0, serial_intf, (uint8_t *)&line_coding, 7);
samux 4:b320d68e98e7 292 }
mbed_official 0:a554658735bf 293
mbed_official 19:bd46ea19486b 294 int USBHostSerialPort::_getc() {
mbed_official 0:a554658735bf 295 uint8_t c = 0;
mbed_official 0:a554658735bf 296 if (bulk_in == NULL) {
samux 4:b320d68e98e7 297 init();
mbed_official 0:a554658735bf 298 return -1;
mbed_official 0:a554658735bf 299 }
dkato 36:f8c0979c2814 300 while (circ_buf.isEmpty()) {
dkato 36:f8c0979c2814 301 if (dev_connected == false) {
dkato 36:f8c0979c2814 302 return -1;
dkato 36:f8c0979c2814 303 }
dkato 36:f8c0979c2814 304 Thread::wait(1);
dkato 36:f8c0979c2814 305 }
mbed_official 0:a554658735bf 306 circ_buf.dequeue(&c);
mbed_official 0:a554658735bf 307 return c;
mbed_official 0:a554658735bf 308 }
mbed_official 0:a554658735bf 309
dkato 36:f8c0979c2814 310 int USBHostSerialPort::writeBuf(const char* b, int s) {
dkato 36:f8c0979c2814 311 int i;
mbed_official 19:bd46ea19486b 312 int c = 0;
dkato 36:f8c0979c2814 313 if (bulk_out) {
dkato 36:f8c0979c2814 314 while (c < s) {
dkato 36:f8c0979c2814 315 if (dev_connected == false) {
dkato 36:f8c0979c2814 316 break;
dkato 36:f8c0979c2814 317 }
dkato 36:f8c0979c2814 318 i = (s < size_bulk_out) ? s : size_bulk_out;
dkato 36:f8c0979c2814 319 if (host->bulkWrite(dev, bulk_out, (uint8_t *)(b+c), i) == USB_TYPE_OK) {
mbed_official 19:bd46ea19486b 320 c += i;
dkato 36:f8c0979c2814 321 }
mbed_official 19:bd46ea19486b 322 }
mbed_official 19:bd46ea19486b 323 }
dkato 36:f8c0979c2814 324 return c;
mbed_official 19:bd46ea19486b 325 }
mbed_official 0:a554658735bf 326
dkato 36:f8c0979c2814 327 int USBHostSerialPort::readBuf(char* b, int s, int timeout) {
mbed_official 19:bd46ea19486b 328 int i = 0;
dkato 36:f8c0979c2814 329
dkato 36:f8c0979c2814 330 if (bulk_out) {
dkato 36:f8c0979c2814 331 for (i = 0; i < s; i++) {
dkato 36:f8c0979c2814 332 while ((circ_buf.isEmpty()) && (dev_connected)) {
dkato 36:f8c0979c2814 333 if (timeout == 0) {
dkato 36:f8c0979c2814 334 break;
dkato 36:f8c0979c2814 335 } else {
dkato 36:f8c0979c2814 336 if (timeout > 0) {
dkato 36:f8c0979c2814 337 timeout--;
dkato 36:f8c0979c2814 338 }
dkato 36:f8c0979c2814 339 Thread::wait(1);
dkato 36:f8c0979c2814 340 }
dkato 36:f8c0979c2814 341 }
dkato 36:f8c0979c2814 342 if (!circ_buf.dequeue((uint8_t *)&b[i])) {
dkato 36:f8c0979c2814 343 break;
dkato 36:f8c0979c2814 344 }
dkato 36:f8c0979c2814 345 }
mbed_official 19:bd46ea19486b 346 }
mbed_official 19:bd46ea19486b 347 return i;
mbed_official 19:bd46ea19486b 348 }
mbed_official 19:bd46ea19486b 349
dkato 36:f8c0979c2814 350 uint32_t USBHostSerialPort::available() {
mbed_official 0:a554658735bf 351 return circ_buf.available();
mbed_official 0:a554658735bf 352 }
mbed_official 0:a554658735bf 353
dkato 36:f8c0979c2814 354 #endif
mbed_official 0:a554658735bf 355