[136] | 1 | /*
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| 2 | Copyright (c) 2011 Arduino. All right reserved.
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| 3 |
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| 4 | This library is free software; you can redistribute it and/or
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| 5 | modify it under the terms of the GNU Lesser General Public
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| 6 | License as published by the Free Software Foundation; either
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| 7 | version 2.1 of the License, or (at your option) any later version.
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| 8 |
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| 9 | This library is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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| 12 | See the GNU Lesser General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU Lesser General Public
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| 15 | License along with this library; if not, write to the Free Software
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| 16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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| 17 | */
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| 18 |
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| 19 | #ifndef _WIRING_PULSE_
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| 20 | #define _WIRING_PULSE_
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| 21 |
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| 22 | #ifdef __cplusplus
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| 23 | extern "C" {
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| 24 | #endif
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| 25 |
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| 26 | /*
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| 27 | * \brief Measures the length (in microseconds) of a pulse on the pin; state is HIGH
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| 28 | * or LOW, the type of pulse to measure. Works on pulses from 2-3 microseconds
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| 29 | * to 3 minutes in length, but must be called at least a few dozen microseconds
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| 30 | * before the start of the pulse.
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| 31 | */
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| 32 | extern uint32_t pulseIn( uint32_t ulPin, uint32_t ulState, uint32_t ulTimeout = 1000000L ) ;
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| 33 |
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| 34 |
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| 35 | #ifdef __cplusplus
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| 36 | }
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| 37 | #endif
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| 38 |
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| 39 | #endif /* _WIRING_PULSE_ */
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