54deb01796
* Exceptions only fired in constructor when it would initialise with a NULL context causing segfaults if used any further * Adds exception.i requirement to mraa.i for node.js and python support Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/*
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* Author: Brendan Le Foll <brendan.le.foll@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <stdexcept>
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#include "aio.h"
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namespace mraa {
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/**
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* @brief API to Analog IO
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*
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* This file defines the aio interface for libmraa
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*
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* @snippet examples/c++/AioA0.cpp Interesting
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*/
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class Aio {
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public:
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/**
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* Aio Constructor, takes a pin number which will map directly to the
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* board number
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*
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* @param pin channel number to read ADC inputs
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*/
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Aio(unsigned int pin) {
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m_aio = mraa_aio_init(pin);
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if (m_aio == NULL) {
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throw std::invalid_argument("Invalid AIO pin specified - do you have an ADC?");
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}
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}
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/**
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* Aio destructor
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*/
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~Aio() {
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mraa_aio_close(m_aio);
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}
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/**
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* Read a value from the AIO pin. By default mraa will shift
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* the raw value up or down to a 10 bit value.
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*
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* @returns The current input voltage. By default, a 10bit value
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*/
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int read() {
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return mraa_aio_read(m_aio);
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}
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/**
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* Set the bit value which mraa will shift the raw reading
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* from the ADC to. I.e. 10bits
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* @param bits the bits the return from read should be i.e 10
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* @return mraa result type
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*/
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mraa_result_t setBit(int bits) {
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return mraa_aio_set_bit(m_aio, bits);
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}
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/**
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* Gets the bit value mraa is shifting the analog read to.
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*
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* @return bit value mraa is set return from the read function
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*/
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int getBit() {
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return mraa_aio_get_bit(m_aio);
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}
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private:
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mraa_aio_context m_aio;
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};
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}
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