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tmk_keyboard/tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostSerial/USBHostSerial.h

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5.7 KiB
C++

/* 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