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