109 lines
2.5 KiB
C++
109 lines
2.5 KiB
C++
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/*
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inputbuffer.cpp - inputbuffer functions class
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Copyright (c) 2014 Luc Lebosse. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef ARDUINO_ARCH_ESP32
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#include "config.h"
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#include "inputbuffer.h"
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InputBuffer inputBuffer;
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InputBuffer::InputBuffer(){
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_RXbufferSize = 0;
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_RXbufferpos = 0;
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}
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InputBuffer::~InputBuffer(){
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_RXbufferSize = 0;
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_RXbufferpos = 0;
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}
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void InputBuffer::begin(){
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_RXbufferSize = 0;
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_RXbufferpos = 0;
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}
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void InputBuffer::end(){
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_RXbufferSize = 0;
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_RXbufferpos = 0;
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}
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InputBuffer::operator bool() const
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{
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return true;
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}
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int InputBuffer::available(){
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return _RXbufferSize;
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}
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size_t InputBuffer::write(uint8_t c)
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{
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//No need currently
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//keep for compatibility
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return 1;
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}
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size_t InputBuffer::write(const uint8_t *buffer, size_t size)
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{
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//No need currently
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//keep for compatibility
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return size;
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}
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int InputBuffer::peek(void){
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if (_RXbufferSize > 0)return _RXbuffer[_RXbufferpos];
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else return -1;
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}
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bool InputBuffer::push (const char * data){
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int data_size = strlen(data);
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if ((data_size + _RXbufferSize) <= RXBUFFERSIZE){
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int current = _RXbufferpos + _RXbufferSize;
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if (current > RXBUFFERSIZE) current = current - RXBUFFERSIZE;
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for (int i = 0; i < data_size; i++){
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if (current > (RXBUFFERSIZE-1)) current = 0;
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_RXbuffer[current] = data[i];
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current ++;
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}
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_RXbufferSize+=strlen(data);
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return true;
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}
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return false;
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}
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int InputBuffer::read(void){
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if (_RXbufferSize > 0) {
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int v = _RXbuffer[_RXbufferpos];
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_RXbufferpos++;
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if (_RXbufferpos > (RXBUFFERSIZE-1))_RXbufferpos = 0;
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_RXbufferSize--;
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return v;
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} else return -1;
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}
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void InputBuffer::flush(void){
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//No need currently
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//keep for compatibility
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}
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#endif // ARDUINO_ARCH_ESP32
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