Bridge library to the 1.5 format

libraries/Bridge/src/Console.cpp

@@ -0,0 +1,153 @@
+/*
+  Copyright (c) 2013 Arduino LLC. All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include <Console.h>
+
+// Default constructor uses global Bridge instance
+ConsoleClass::ConsoleClass() : 
+  bridge(Bridge), inBuffered(0), inReadPos(0), inBuffer(NULL),
+  autoFlush(true)
+{
+  // Empty
+}
+
+// Constructor with a user provided BridgeClass instance
+ConsoleClass::ConsoleClass(BridgeClass &_b) : 
+  bridge(_b), inBuffered(0), inReadPos(0), inBuffer(NULL),
+  autoFlush(true)
+{
+  // Empty
+}
+
+ConsoleClass::~ConsoleClass() {
+  end();
+}
+
+size_t ConsoleClass::write(uint8_t c) {
+  if (autoFlush) {
+    uint8_t tmp[] = { 'P', c };
+    bridge.transfer(tmp, 2);
+    return 1;
+  } else {
+    outBuffer[outBuffered++] = c;
+    if (outBuffered == outBufferSize)
+      flush();
+  }
+}
+
+size_t ConsoleClass::write(const uint8_t *buff, size_t size) {
+  if (autoFlush) {
+    // TODO: do it in a more efficient way
+    uint8_t *tmp = new uint8_t[size+1];
+    tmp[0] = 'P';
+    memcpy(tmp+1, buff, size);
+    bridge.transfer(tmp, size+1);
+    delete[] tmp;
+    return size;
+  } else {
+    while (size > 0) {
+      outBuffer[outBuffered++] = *buff++;
+      size--;
+      if (outBuffered == outBufferSize)
+        flush();
+    }
+  }
+}
+
+void ConsoleClass::flush() {
+  if (autoFlush)
+    return;
+  
+  bridge.transfer(outBuffer, outBuffered);
+  outBuffered = 1;
+}
+
+void ConsoleClass::noBuffer() {
+  if (autoFlush)
+	return;
+  delete[] outBuffer;
+  autoFlush = true;
+}
+
+void ConsoleClass::buffer(uint8_t size) {
+  noBuffer();
+  if (size==0)
+	return;
+  outBuffer = new uint8_t[size+1];
+  outBuffer[0] = 'P'; // WRITE tag
+  outBufferSize = size+1;
+  outBuffered = 1;
+  autoFlush = false;
+}
+
+bool ConsoleClass::connected() {
+  uint8_t tmp = 'a';
+  bridge.transfer(&tmp, 1, &tmp, 1);
+  return tmp==1;
+}
+
+int ConsoleClass::available() {
+  // Look if there is new data available
+  doBuffer();
+  return inBuffered;
+}
+
+int ConsoleClass::read() {
+  doBuffer();
+  if (inBuffered == 0)
+    return -1; // no chars available
+  else {
+    inBuffered--;
+    return inBuffer[inReadPos++];
+  }
+}
+
+int ConsoleClass::peek() {
+  doBuffer();
+  if (inBuffered == 0)
+    return -1; // no chars available
+  else
+    return inBuffer[inReadPos];
+}
+
+void ConsoleClass::doBuffer() {
+  // If there are already char in buffer exit
+  if (inBuffered > 0)
+    return;
+
+  // Try to buffer up to 32 characters
+  inReadPos = 0;
+  uint8_t tmp[] = { 'p', BUFFER_SIZE };
+  inBuffered = bridge.transfer(tmp, 2, inBuffer, BUFFER_SIZE);
+}
+
+void ConsoleClass::begin() {
+  bridge.begin();
+  end();
+  inBuffer = new uint8_t[BUFFER_SIZE];
+}
+
+void ConsoleClass::end() {
+  noBuffer();
+  if (inBuffer) {
+    delete[] inBuffer;
+    inBuffer = NULL;
+  }
+}
+
+ConsoleClass Console;