2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
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35 * @brief API to Analog IO
37 * This file defines the aio interface for libmraa
39 * @snippet AioA0.cpp Interesting
45 * Aio Constructor, takes a pin number which will map directly to the
48 * @param pin channel number to read ADC inputs
52 m_aio = mraa_aio_init(pin);
54 throw std::invalid_argument("Invalid AIO pin specified - do you have an ADC?");
62 mraa_aio_close(m_aio);
65 * Read a value from the AIO pin. By default mraa will shift
66 * the raw value up or down to a 10 bit value.
68 * @returns The current input voltage. By default, a 10bit value
73 return mraa_aio_read(m_aio);
76 * Read a value from the AIO pin and return it as a normalized float.
78 * @returns The current input voltage as a normalized float (0.0f-1.0f)
83 return mraa_aio_read_float(m_aio);
86 * Set the bit value which mraa will shift the raw reading
87 * from the ADC to. I.e. 10bits
88 * @param bits the bits the return from read should be i.e 10
89 * @return mraa::Result type
94 return (Result) mraa_aio_set_bit(m_aio, bits);
97 * Gets the bit value mraa is shifting the analog read to.
99 * @return bit value mraa is set return from the read function
104 return mraa_aio_get_bit(m_aio);
108 mraa_aio_context m_aio;