Implementation of 3G USB Modem Huawei E372
Diff: USBSerialStream.h
- Revision:
- 0:67daedd6f74f
- Child:
- 2:61ac95f0af72
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBSerialStream.h Fri Feb 20 16:48:12 2015 +0000 @@ -0,0 +1,73 @@ +/* USBSerialStream.h */ +/* Copyright (C) 2012 mbed.org, MIT License + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software + * and associated documentation files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, publish, distribute, + * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or + * substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef USBSERIALSTREAM_H_ +#define USBSERIALSTREAM_H_ + +#include "rtos.h" + +#include "dbg.h" +#include "core/IOStream.h" +#include "core/MtxCircBuffer.h" + +#include "USBHost/USBHost3GModule/IUSBHostSerial.h" +#include "USBHost/USBHost3GModule/IUSBHostSerialListener.h" + +/* Input Serial Stream for USB virtual serial ports interfaces +This class is not thread-safe, except for the *Abort() methods that can be called by any thread/ISR +*/ +#define CIRCBUF_SIZE 127 +class USBSerialStream : public IOStream, IUSBHostSerialListener +{ +public: + USBSerialStream(IUSBHostSerial& serial); + /*virtual*/ ~USBSerialStream(); + + //0 for non-blocking (returns immediately), osWaitForever for infinite blocking + virtual int read(uint8_t* buf, size_t* pLength, size_t maxLength, uint32_t timeout=osWaitForever); + virtual size_t available(); + virtual int waitAvailable(uint32_t timeout=osWaitForever); //Wait for data to be available + virtual int abortRead(); //Abort current reading (or waiting) operation + + + //0 for non-blocking (returns immediately), osWaitForever for infinite blocking + virtual int write(uint8_t* buf, size_t length, uint32_t timeout=osWaitForever); + virtual size_t space(); + virtual int waitSpace(uint32_t timeout=osWaitForever); //Wait for space to be available + virtual int abortWrite(); //Abort current writing (or waiting) operation + +private: + IUSBHostSerial& m_serial; + volatile bool m_serialTxFifoEmpty; + + void setupReadableISR(bool en); + virtual void readable(); //Callback from m_serial when new data is available + + Semaphore m_availableSphre; //Used for signalling + + void setupWriteableISR(bool en); + virtual void writeable(); //Callback from m_serial when new space is available + + Semaphore m_spaceSphre; //Used for signalling + + MtxCircBuffer<uint8_t, CIRCBUF_SIZE + 1> m_inBuf; + MtxCircBuffer<uint8_t, CIRCBUF_SIZE + 1> m_outBuf; +}; + +#endif /* USBSERIALSTREAM_H_ */