Keywords

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Table A-1 presents the I/O mappings for Intel Galileo. This table is the official port I/O mapping provided by Intel and also can be found accessing “https://communities.intel.com/docs/DOC-21920”.

Table A-1. Intel Galileo I/O Mappings
Full size table

Following are acronyms for Table A-1:

  • Cypr: Crypress GPIO Expander

  • BI: Bidirectional

  • I: Input without pull-up off

  • Int: Interruption pins

  • Dir: Direction

Table A-2 presents the Mux Selectors for Intel Galileo.

Table A-2. Intel Galileo Muxing
Full size table

Following are acronyms for Table A-2:

  • O: Output

  • Dir: Direction

  • U: Undefined

The following commands demonstrated some examples how to use the table using Linux terminal shell:

  • Setting IO7 as GPIO output:

echo -n "27" > /sys/class/gpio/export

echo -n "out" > /sys/class/gpio/gpio27/direction

echo 0 > /sys/class/gpio/gpio27/value # will set OUTPUT as LOW

echo 1 > /sys/class/gpio/gpio27/value # will set OUTPUT as HIGH

  • Setting IO7 as GPIO input:

echo -n "27" > /sys/class/gpio/export

echo -n "in" > /sys/class/gpio/gpio27/direction

cat /sys/class/gpio/gpio27/value