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/*
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Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef SERIALBUF_H
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#define SERIALBUF_H
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#include "mbed.h"
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#include "netCfg.h"
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#if NET_USB_SERIAL
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#include "drv/serial/usb/UsbSerial.h"
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#endif
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class SerialCircularBuf
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{
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public:
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SerialCircularBuf(int len);
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~SerialCircularBuf();
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int room();
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int len();
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void write(char c);
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char read();
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void setReadMode(bool readMode); //If true, keeps chars in buf when read, false by default
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void flushRead(); //Delete chars that have been read & return chars len (only useful with readMode = true)
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void resetRead(); //Go back to initial read position & return chars len (only useful with readMode = true)
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private:
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char* m_buf;
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int m_len;
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volatile char* m_pReadStart;
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volatile char* m_pRead;
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volatile char* m_pWrite;
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volatile bool m_readMode;
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};
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class SerialBuf
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{
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public:
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SerialBuf(int len); //Buffer length
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virtual ~SerialBuf();
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void attach(Serial* pSerial);
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void detach();
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#if NET_USB_SERIAL
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void attach(UsbSerial* pUsbSerial);
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#endif
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//Really useful for debugging
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char getc();
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void putc(char c);
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bool readable();
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bool writeable();
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/*protected:*/
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void setReadMode(bool readMode); //If true, keeps chars in buf when read, false by default
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void flushRead(); //Delete chars that have been read & return chars len (only useful with readMode = true)
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void resetRead(); //Go back to initial read position & return chars len (only useful with readMode = true)
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private:
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void onRxInterrupt(); //Callback from m_pSerial
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void onTxInterrupt(); //Callback from m_pSerial
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SerialCircularBuf m_rxBuf;
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SerialCircularBuf m_txBuf;
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Serial* m_pSerial; //Not owned
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#if NET_USB_SERIAL
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//USB Serial Impl
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UsbSerial* m_pUsbSerial; //Not owned
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//Ticker m_usbTick;
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#endif
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};
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#endif
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Daniel Peter