Diff: USBHost3GModule/USBSerialStream.cpp

Revision:

18:37c948cf0dbf

Parent:

17:c7b1b8451598

Child:

19:bd46ea19486b

--- a/USBHost3GModule/USBSerialStream.cpp	Wed Oct 16 14:15:18 2013 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,236 +0,0 @@
-/* USBSerialStream.cpp */
-/* 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.
- */
-
-#define __DEBUG__ 0
-#ifndef __MODULE__
-#define __MODULE__ "USBSerialStream.cpp"
-#endif
-
-#include "core/fwk.h"
-
-#include <cstring>
-
-#include "USBSerialStream.h"
-
-
-USBSerialStream::USBSerialStream(IUSBHostSerial& serial) : m_serial(serial), m_serialTxFifoEmpty(true),
-m_availableSphre(1), m_spaceSphre(1), m_inBuf()
-{
-  m_availableSphre.wait();
-  m_spaceSphre.wait();
-  //Attach interrupts
-  m_serial.attach(this);
-}
-
-/*virtual*/ USBSerialStream::~USBSerialStream()
-{
-  m_serial.attach(NULL);
-}
-
-//0 for non-blocking (returns immediately), -1 for infinite blocking
-/*virtual*/ int USBSerialStream::read(uint8_t* buf, size_t* pLength, size_t maxLength, uint32_t timeout/*=osWaitForever*/)
-{
-  DBG("Trying to read at most %d chars", maxLength);
-  int ret = waitAvailable(timeout);
-  if(ret)
-  {
-    WARN("Error %d while waiting for incoming data", ret);
-    return ret;
-  }
-  int a = available(); //Prevent macro issues
-  int readLen = MIN( a, maxLength );
-  *pLength = readLen;
-
-  setupReadableISR(false);
-  while(readLen--)
-  {
-    m_inBuf.dequeue(buf);
-    buf++;
-  }
-  setupReadableISR(true);
-  DBG("Read %d chars successfully", *pLength);
-  return OK;
-}
-
-/*virtual*/ size_t USBSerialStream::available()
-{
-  setupReadableISR(false); //m_inBuf.available() is not reentrant
-  size_t len = m_inBuf.available();
-  setupReadableISR(true);
-  return len;
-}
-
-/*virtual*/ int USBSerialStream::waitAvailable(uint32_t timeout/*=osWaitForever*/) //Wait for data to be available
-{
-  int ret;
-  if(available()) //Is data already available?
-  {
-    while( m_availableSphre.wait(0) > 0 ); //Clear the queue as data is available
-    return OK;
-  }
-
-  DBG("Waiting for data availability %d ms (-1 is infinite)", timeout);
-  ret = m_availableSphre.wait(timeout); //Wait for data to arrive or for abort
-  if(ret <= 0)
-  {
-    DBG("Timeout");
-    return NET_TIMEOUT;
-  }
-  if(!m_inBuf.available()) //Even if abort has been called, return that data is available
-  {
-    DBG("Aborted");
-    return NET_INTERRUPTED;
-  }
-  DBG("Finished waiting");
-  while( m_availableSphre.wait(0) > 0 ); //Clear the queue as data is available
-  return OK;
-}
-
-/*virtual*/ int USBSerialStream::abortRead() //Abort current reading (or waiting) operation
-{
-  if( /*!available()*/true ) //If there is data pending, no need to abort
-  {
-    m_availableSphre.release(); //Force exiting the waiting state
-  }
-  else
-  {
-    DBG("Serial is readable"); ;
-  }
-  return OK;
-}
-
-void USBSerialStream::setupReadableISR(bool en)
-{
-  m_serial.setupIrq(en, IUSBHostSerial::RxIrq);
-}
-
-void USBSerialStream::readable() //Callback from m_serial when new data is available
-{
-  while(m_serial.readable())
-  {
-    m_inBuf.queue(m_serial.getc());
-  }
-  m_serial.readPacket(); //Start read of next packet
-  m_availableSphre.release(); //Force exiting the waiting state
-}
-
-//0 for non-blocking (returns immediately), -1 for infinite blocking
-/*virtual*/ int USBSerialStream::write(uint8_t* buf, size_t length, uint32_t timeout/*=-1*/)
-{
-  DBG("Trying to write %d chars", length);
-  do
-  {
-    int ret = waitSpace(timeout);
-    if(ret)
-    {
-      WARN("Error %d while waiting for space", ret);
-      return ret;
-    }
-    int s = space(); //Prevent macro issues
-    int writeLen = MIN( s, length );
-    DBG("Writing %d chars", writeLen);
-    setupWriteableISR(false);
-    while(writeLen)
-    {
-      m_outBuf.queue(*buf);
-      buf++;
-      length--;
-      writeLen--;
-    }
-    //If m_serial tx fifo is empty we need to start the packet write
-    if( m_outBuf.available() && m_serialTxFifoEmpty )
-    {
-      writeable();
-    }
-    setupWriteableISR(true);
-  } while(length);
-
-  DBG("Write successful");
-  return OK;
-}
-
-/*virtual*/ size_t USBSerialStream::space()
-{
-  setupWriteableISR(false); //m_outBuf.available() is not reentrant
-  size_t len = CIRCBUF_SIZE - m_outBuf.available();
-  setupWriteableISR(true);
-  return len;
-}
-
-/*virtual*/ int USBSerialStream::waitSpace(uint32_t timeout/*=-1*/) //Wait for space to be available
-{
-  int ret;
-  if(space()) //Is still space already left?
-  {
-    while( m_spaceSphre.wait(0) > 0); //Clear the queue as space is available
-    return OK;
-  }
-
-  DBG("Waiting for data space %d ms (-1 is infinite)", timeout);
-  ret = m_spaceSphre.wait(timeout); //Wait for space to be made or for abort
-  if(ret <= 0)
-  {
-    DBG("Timeout");
-    return NET_TIMEOUT;
-  }
-  if(!space()) //Even if abort has been called, return that space is available
-  {
-    DBG("Aborted");
-    return NET_INTERRUPTED;
-  }
-  while( m_spaceSphre.wait(0) > 0); //Clear the queue as space is available
-  return OK;
-}
-
-/*virtual*/ int USBSerialStream::abortWrite() //Abort current writing (or waiting) operation
-{
-  if( !space() ) //If there is space left, no need to abort
-  {
-    m_spaceSphre.release(); //Force exiting the waiting state
-  }
-  return OK;
-}
-
-void USBSerialStream::setupWriteableISR(bool en)
-{
-  m_serial.setupIrq(en, IUSBHostSerial::TxIrq);
-}
-
-void USBSerialStream::writeable() //Callback from m_serial when new space is available
-{
-  if(m_outBuf.isEmpty())
-  {
-    m_serialTxFifoEmpty = true;
-  }
-  else
-  {
-    m_serialTxFifoEmpty = false;
-    while(m_serial.writeable() && !m_outBuf.isEmpty())
-    {
-      uint8_t c;
-      m_outBuf.dequeue(&c);
-      m_serial.putc((char)c);
-    }
-    m_serial.writePacket(); //Start packet write
-  }
-  if(!m_outBuf.isFull())
-  {
-    m_spaceSphre.release(); //Force exiting the waiting state
-  }
-}