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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.
- */
-
- #ifndef USBHOSTSERIAL_H
- #define USBHOSTSERIAL_H
-
- #include "USBHostConf.h"
-
- #if USBHOST_SERIAL
-
- #include "USBHost.h"
- #include "Stream.h"
- #include "MtxCircBuffer.h"
-
- /**
- * A class to communicate a USB virtual serial port
- */
- class USBHostSerialPort : public Stream {
- public:
- /**
- * Constructor
- */
- USBHostSerialPort();
-
- enum IrqType {
- RxIrq,
- TxIrq
- };
-
- enum Parity {
- None = 0,
- Odd,
- Even,
- Mark,
- Space
- };
-
- void connect(USBHost* _host, USBDeviceConnected * _dev,
- uint8_t _serial_intf, USBEndpoint* _bulk_in, USBEndpoint* _bulk_out);
-
- /**
- * Check the number of bytes available.
- *
- * @returns the number of bytes available
- */
- uint8_t available();
-
- /**
- * Attach a member function to call when a packet is received.
- *
- * @param tptr pointer to the object to call the member function on
- * @param mptr pointer to the member function to be called
- * @param irq irq type
- */
- template<typename T>
- inline void attach(T* tptr, void (T::*mptr)(void), IrqType irq = RxIrq) {
- if ((mptr != NULL) && (tptr != NULL)) {
- if (irq == RxIrq) {
- rx.attach(tptr, mptr);
- } else {
- tx.attach(tptr, mptr);
- }
- }
- }
-
- /**
- * Attach a callback called when a packet is received
- *
- * @param ptr function pointer
- */
- inline void attach(void (*fn)(void), IrqType irq = RxIrq) {
- if (fn != NULL) {
- if (irq == RxIrq) {
- rx.attach(fn);
- } else {
- tx.attach(fn);
- }
- }
- }
-
- /** Set the baud rate of the serial port
- *
- * @param baudrate The baudrate of the serial port (default = 9600).
- */
- void baud(int baudrate = 9600);
-
- /** Set the transmission format used by the Serial port
- *
- * @param bits The number of bits in a word (default = 8)
- * @param parity The parity used (USBHostSerialPort::None, USBHostSerialPort::Odd, USBHostSerialPort::Even, USBHostSerialPort::Mark, USBHostSerialPort::Space; default = USBHostSerialPort::None)
- * @param stop The number of stop bits (1 or 2; default = 1)
- */
- void format(int bits = 8, Parity parity = USBHostSerialPort::None, int stop_bits = 1);
- virtual int writeBuf(const char* b, int s);
- virtual int readBuf(char* b, int s);
-
- protected:
- virtual int _getc();
- virtual int _putc(int c);
-
- private:
- USBHost * host;
- USBDeviceConnected * dev;
-
- USBEndpoint * bulk_in;
- USBEndpoint * bulk_out;
- uint32_t size_bulk_in;
- uint32_t size_bulk_out;
-
- void init();
-
- MtxCircBuffer<uint8_t, 128> circ_buf;
-
- uint8_t buf[64];
-
- typedef struct {
- uint32_t baudrate;
- uint8_t stop_bits;
- uint8_t parity;
- uint8_t data_bits;
- } PACKED LINE_CODING;
-
- LINE_CODING line_coding;
-
- void rxHandler();
- void txHandler();
- FunctionPointer rx;
- FunctionPointer tx;
-
- uint8_t serial_intf;
- };
-
- #if (USBHOST_SERIAL <= 1)
-
- class USBHostSerial : public IUSBEnumerator, public USBHostSerialPort
- {
- public:
- USBHostSerial();
-
- /**
- * Try to connect a serial device
- *
- * @return true if connection was successful
- */
- bool connect();
-
- void disconnect();
-
- /**
- * Check if a any serial port is connected
- *
- * @returns true if a serial device is connected
- */
- bool connected();
-
- protected:
- USBHost* host;
- USBDeviceConnected* dev;
- uint8_t port_intf;
- int ports_found;
-
- //From IUSBEnumerator
- virtual void setVidPid(uint16_t vid, uint16_t pid);
- virtual bool 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
- virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
-
- private:
- bool dev_connected;
- };
-
- #else // (USBHOST_SERIAL > 1)
-
- class USBHostMultiSerial : public IUSBEnumerator {
- public:
- USBHostMultiSerial();
- virtual ~USBHostMultiSerial();
-
- USBHostSerialPort* getPort(int port)
- {
- return port < USBHOST_SERIAL ? ports[port] : NULL;
- }
-
- /**
- * Try to connect a serial device
- *
- * @return true if connection was successful
- */
- bool connect();
-
- void disconnect();
-
- /**
- * Check if a any serial port is connected
- *
- * @returns true if a serial device is connected
- */
- bool connected();
-
- protected:
- USBHost* host;
- USBDeviceConnected* dev;
- USBHostSerialPort* ports[USBHOST_SERIAL];
- uint8_t port_intf[USBHOST_SERIAL];
- int ports_found;
-
- //From IUSBEnumerator
- virtual void setVidPid(uint16_t vid, uint16_t pid);
- virtual bool 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
- virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
-
- private:
- bool dev_connected;
- };
- #endif // (USBHOST_SERIAL <= 1)
-
- #endif
-
- #endif
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