Users Guide

NOTE: cctk serial1 is mapped to IOIO2; cctk serial2 is mapped to IOIO1.

2. Adjust the port settings.

# sudo stty -F /dev/serial-port-ioio2 ispeed 115200 ospeed 115200 -echo -onlcr -ixon -

ixoff

3. Send data.

(root)# echo abcdefg > /dev/serial-port-ioio2

4. Read data on the second device.

(root)# cat /dev/serial-port-ioio2

GPIO

NOTE: For more information on GPIO sysfs interface, see kernel.org/doc/Documentation/gpio/sysfs.txt.

The GPIO connector (AD5593R) on the Edge Gateway 3001 has 8 pins. The connector can controlled by the standard Linux

GPIO interface. The GPIOs number maps 330 to 337.

1. Pin: GPIO1

2. Pin: GPIO8

3. ISO GND: Isolated grounds

Example 1: Set GPIO 1 as output, value as 1

$ echo 330 > /sys/class/gpio/export

$ echo out > /sys/class/gpio/gpio330/direction

$ echo 1 > /sys/class/gpio/gpio330/value

Example 2: Set GPIO 8 as input, and read value

$ echo 337 > /sys/class/gpio/export

$ echo out > /sys/class/gpio/gpio337/direction

$ cat /sys/class/gpio/gpio337/value

Example 3: Connect GPIO 1 to 8, read GPIO 8 pin value

$ cat /sys/class/gpio/gpio337/value

Setting up the operating system