Programming the Intel Galileo: Getting Started with the Arduino -Compatible Development Board by Rush Christopher

Author:Rush, Christopher [Rush, Christopher]
Language: eng
Format: epub, azw3
Publisher: McGraw-Hill Education
Published: 2016-11-29T05:00:00+00:00

Analog Inputs

As you have learned with digital inputs, the information you receive from a digital device is either HIGH or LOW, ON or OFF. In contrast, there are a number of devices that can have a range of values, such as dials, sliders, temperature sensors, and many more. Analog inputs on the Galileo board give us a value ranging from 0 to 4095 up to 5 V. Just like other Arduino boards, the Intel Galileo has six 12-bit analog pins that you can use to read analog devices (see Figure 5.4 ).

Figure 5.4 Intel Galileo board analog pins .

The analog pins on the Galileo will accept any voltage between 0 and 5 V. As previously mentioned, because we are using a digital system, these values must be converted into digital using an analog-to-digital converter (ADC), which is featured on the Galileo board.

Luckily for us, we do not have to understand how the ADC works in too much detail because the software we will write will take care of most of it for us.

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