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- /* mbed USBHost Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- #include "USBHostSerial.h"
-
- #if USBHOST_SERIAL
-
- #include "dbg.h"
-
- #define CHECK_INTERFACE(cls,subcls,proto) \
- (((cls == 0xFF) && (subcls == 0xFF) && (proto == 0xFF)) /* QUALCOM CDC */ || \
- ((cls == SERIAL_CLASS) && (subcls == 0x00) && (proto == 0x00)) /* STANDARD CDC */ )
-
- #if (USBHOST_SERIAL <= 1)
-
- USBHostSerial::USBHostSerial()
- {
- host = USBHost::getHostInst();
- ports_found = 0;
- dev_connected = false;
- }
-
- bool USBHostSerial::connected()
- {
- return dev_connected;
- }
-
- void USBHostSerial::disconnect(void)
- {
- ports_found = 0;
- dev = NULL;
- }
-
- bool USBHostSerial::connect() {
-
- if (dev)
- {
- for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
- {
- USBDeviceConnected* d = host->getDevice(i);
- if (dev == d)
- return true;
- }
- disconnect();
- }
- for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
- {
- USBDeviceConnected* d = host->getDevice(i);
- if (d != NULL) {
-
- USB_DBG("Trying to connect serial device \r\n");
- if(host->enumerate(d, this))
- break;
-
- USBEndpoint* bulk_in = d->getEndpoint(port_intf, BULK_ENDPOINT, IN);
- USBEndpoint* bulk_out = d->getEndpoint(port_intf, BULK_ENDPOINT, OUT);
- if (bulk_in && bulk_out)
- {
- USBHostSerialPort::connect(host,d,port_intf,bulk_in, bulk_out);
- dev = d;
- dev_connected = true;
- }
- }
- }
- return dev != NULL;
- }
-
- /*virtual*/ void USBHostSerial::setVidPid(uint16_t vid, uint16_t pid)
- {
- // we don't check VID/PID for MSD driver
- }
-
- /*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
- {
- if (!ports_found &&
- CHECK_INTERFACE(intf_class, intf_subclass, intf_protocol)) {
- port_intf = intf_nb;
- ports_found = true;
- return true;
- }
- return false;
- }
-
- /*virtual*/ bool USBHostSerial::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
- {
- if (ports_found && (intf_nb == port_intf)) {
- if (type == BULK_ENDPOINT)
- return true;
- }
- return false;
- }
-
- #else // (USBHOST_SERIAL > 1)
-
- //------------------------------------------------------------------------------
-
- USBHostMultiSerial::USBHostMultiSerial()
- {
- host = USBHost::getHostInst();
- dev = NULL;
- memset(ports, NULL, sizeof(ports));
- ports_found = 0;
- dev_connected = false;
- }
-
- USBHostMultiSerial::~USBHostMultiSerial()
- {
- disconnect();
- }
-
- bool USBHostMultiSerial::connected()
- {
- return dev_connected;
- }
-
- void USBHostMultiSerial::disconnect(void)
- {
- for (int port = 0; port < USBHOST_SERIAL; port ++)
- {
- if (ports[port])
- {
- delete ports[port];
- ports[port] = NULL;
- }
- }
- ports_found = 0;
- dev = NULL;
- }
-
- bool USBHostMultiSerial::connect() {
-
- if (dev)
- {
- for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
- {
- USBDeviceConnected* d = host->getDevice(i);
- if (dev == d)
- return true;
- }
- disconnect();
- }
- for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++)
- {
- USBDeviceConnected* d = host->getDevice(i);
- if (d != NULL) {
-
- USB_DBG("Trying to connect serial device \r\n");
- if(host->enumerate(d, this))
- break;
-
- for (int port = 0; port < ports_found; port ++)
- {
- USBEndpoint* bulk_in = d->getEndpoint(port_intf[port], BULK_ENDPOINT, IN);
- USBEndpoint* bulk_out = d->getEndpoint(port_intf[port], BULK_ENDPOINT, OUT);
- if (bulk_in && bulk_out)
- {
- ports[port] = new USBHostSerialPort();
- if (ports[port])
- {
- ports[port]->connect(host,d,port_intf[port],bulk_in, bulk_out);
- dev = d;
- dev_connected = true;
- }
- }
- }
- }
- }
- return dev != NULL;
- }
-
- /*virtual*/ void USBHostMultiSerial::setVidPid(uint16_t vid, uint16_t pid)
- {
- // we don't check VID/PID for MSD driver
- }
-
- /*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
- {
- if ((ports_found < USBHOST_SERIAL) &&
- CHECK_INTERFACE(intf_class, intf_subclass, intf_protocol)) {
- port_intf[ports_found++] = intf_nb;
- return true;
- }
- return false;
- }
-
- /*virtual*/ bool USBHostMultiSerial::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
- {
- if ((ports_found > 0) && (intf_nb == port_intf[ports_found-1])) {
- if (type == BULK_ENDPOINT)
- return true;
- }
- return false;
- }
-
- #endif
-
- //------------------------------------------------------------------------------
-
- #define SET_LINE_CODING 0x20
-
- USBHostSerialPort::USBHostSerialPort(): circ_buf()
- {
- init();
- }
-
- void USBHostSerialPort::init(void)
- {
- host = NULL;
- dev = NULL;
- serial_intf = NULL;
- size_bulk_in = 0;
- size_bulk_out = 0;
- bulk_in = NULL;
- bulk_out = NULL;
- line_coding.baudrate = 9600;
- line_coding.data_bits = 8;
- line_coding.parity = None;
- line_coding.stop_bits = 1;
- circ_buf.flush();
- }
-
- void USBHostSerialPort::connect(USBHost* _host, USBDeviceConnected * _dev,
- uint8_t _serial_intf, USBEndpoint* _bulk_in, USBEndpoint* _bulk_out)
- {
- host = _host;
- dev = _dev;
- serial_intf = _serial_intf;
- bulk_in = _bulk_in;
- bulk_out = _bulk_out;
-
- USB_INFO("New Serial device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, serial_intf);
- dev->setName("Serial", serial_intf);
- host->registerDriver(dev, serial_intf, this, &USBHostSerialPort::init);
- baud(9600);
- size_bulk_in = bulk_in->getSize();
- size_bulk_out = bulk_out->getSize();
- bulk_in->attach(this, &USBHostSerialPort::rxHandler);
- bulk_out->attach(this, &USBHostSerialPort::txHandler);
- host->bulkRead(dev, bulk_in, buf, size_bulk_in, false);
- }
-
- void USBHostSerialPort::rxHandler() {
- if (bulk_in) {
- int len = bulk_in->getLengthTransferred();
- if (bulk_in->getState() == USB_TYPE_IDLE) {
- for (int i = 0; i < len; i++) {
- circ_buf.queue(buf[i]);
- }
- rx.call();
- host->bulkRead(dev, bulk_in, buf, size_bulk_in, false);
- }
- }
- }
-
- void USBHostSerialPort::txHandler() {
- if (bulk_out) {
- if (bulk_out->getState() == USB_TYPE_IDLE) {
- tx.call();
- }
- }
- }
-
- int USBHostSerialPort::_putc(int c) {
- if (bulk_out) {
- if (host->bulkWrite(dev, bulk_out, (uint8_t *)&c, 1) == USB_TYPE_OK) {
- return 1;
- }
- }
- return -1;
- }
-
- void USBHostSerialPort::baud(int baudrate) {
- line_coding.baudrate = baudrate;
- format(line_coding.data_bits, (Parity)line_coding.parity, line_coding.stop_bits);
- }
-
- void USBHostSerialPort::format(int bits, Parity parity, int stop_bits) {
- line_coding.data_bits = bits;
- line_coding.parity = parity;
- line_coding.stop_bits = (stop_bits == 1) ? 0 : 2;
-
- // set line coding
- host->controlWrite( dev,
- USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
- SET_LINE_CODING,
- 0, serial_intf, (uint8_t *)&line_coding, 7);
- }
-
- int USBHostSerialPort::_getc() {
- uint8_t c = 0;
- if (bulk_in == NULL) {
- init();
- return -1;
- }
- while (circ_buf.isEmpty());
- circ_buf.dequeue(&c);
- return c;
- }
-
- int USBHostSerialPort::writeBuf(const char* b, int s)
- {
- int c = 0;
- if (bulk_out)
- {
- while (c < s)
- {
- int i = (s < size_bulk_out) ? s : size_bulk_out;
- if (host->bulkWrite(dev, bulk_out, (uint8_t *)(b+c), i) == USB_TYPE_OK)
- c += i;
- }
- }
- return s;
- }
-
- int USBHostSerialPort::readBuf(char* b, int s)
- {
- int i = 0;
- if (bulk_in)
- {
- for (i = 0; i < s; )
- b[i++] = getc();
- }
- return i;
- }
-
- uint8_t USBHostSerialPort::available() {
- return circ_buf.available();
- }
-
-
-
- #endif
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