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CommandStation-EX/AnalogReadFast.h
2020-11-15 16:21:25 -07:00

37 lines
1.2 KiB
C

/*
* AnalogReadFast.h
*
* Copyright (C) 2016 Albert van Dalen http://www.avdweb.nl
*
* This file is part of CommandStation.
*
* CommandStation is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CommandStation 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef COMMANDSTATION_DCC_ANALOGREADFAST_H_
#define COMMANDSTATION_DCC_ANALOGREADFAST_H_
#include <Arduino.h>
int inline analogReadFast(uint8_t ADCpin);
int inline analogReadFast(uint8_t ADCpin)
{ byte ADCSRAoriginal = ADCSRA;
ADCSRA = (ADCSRA & B11111000) | 4;
int adc = analogRead(ADCpin);
ADCSRA = ADCSRAoriginal;
return adc;
}
#endif // COMMANDSTATION_DCC_ANALOGREADFAST_H_