2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
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33 * @brief API to Analog IO
35 * This file defines the aio interface for libmraa
37 * @snippet examples/c++/AioA0.cpp Interesting
42 * Aio Constructor, takes a pin number which will map directly to the
45 * @param pin channel number to read ADC inputs
47 Aio(unsigned int pin) {
48 m_aio = mraa_aio_init(pin);
50 throw std::invalid_argument("Invalid AIO pin specified - do you have an ADC?");
57 mraa_aio_close(m_aio);
60 * Read a value from the AIO pin. By default mraa will shift
61 * the raw value up or down to a 10 bit value.
63 * @returns The current input voltage. By default, a 10bit value
66 return mraa_aio_read(m_aio);
69 * Read a value from the AIO pin and return it as a normalized float.
71 * @returns The current input voltage as a normalized float (0.0f-1.0f)
74 return mraa_aio_read_float(m_aio);
77 * Set the bit value which mraa will shift the raw reading
78 * from the ADC to. I.e. 10bits
79 * @param bits the bits the return from read should be i.e 10
80 * @return mraa result type
82 mraa_result_t setBit(int bits) {
83 return mraa_aio_set_bit(m_aio, bits);
86 * Gets the bit value mraa is shifting the analog read to.
88 * @return bit value mraa is set return from the read function
91 return mraa_aio_get_bit(m_aio);
95 mraa_aio_context m_aio;