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80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/*
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Copyright (c) 2011 Arduino. All right 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.
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See the GNU 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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#ifndef _WIRING_ANALOG_
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#define _WIRING_ANALOG_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* \brief SAM3 products have only one reference for ADC
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*/
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typedef enum _eAnalogReference
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{
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AR_DEFAULT,
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} eAnalogReference ;
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/*
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* \brief Configures the reference voltage used for analog input (i.e. the value used as the top of the input range).
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* This function is kept only for compatibility with existing AVR based API.
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*
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* \param ulMmode Should be set to AR_DEFAULT.
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*/
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extern void analogReference( eAnalogReference ulMode ) ;
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/*
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* \brief Writes an analog value (PWM wave) to a pin.
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*
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* \param ulPin
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* \param ulValue
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*/
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extern void analogWrite( uint32_t ulPin, uint32_t ulValue ) ;
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/*
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* \brief Reads the value from the specified analog pin.
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*
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* \param ulPin
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*
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* \return Read value from selected pin, if no error.
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*/
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extern uint32_t analogRead( uint32_t ulPin ) ;
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/*
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* \brief Set the resolution of analogRead return values. Default is 10 bits (range from 0 to 1023).
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*
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* \param res
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*/
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extern void analogReadResolution(int res);
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/*
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* \brief Set the resolution of analogWrite parameters. Default is 8 bits (range from 0 to 255).
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*
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* \param res
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*/
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extern void analogWriteResolution(int res);
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extern void analogOutputInit( void ) ;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _WIRING_ANALOG_ */
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