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How to use gpio in linux 6.2.1, Gpio mapping table, Gpio sample code – IBASE IB102 User Manual

Page 64: How to use gpio in linux 6.2.1. gpio mapping table

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IB102

6.2. How to use GPIO in Linux

6.2.1. GPIO Mapping Table

GPIO

Logical Number

Physical Number

1

32

2

33

3

34

5

36

7

38

8

39

9

81

10

82

11

40

12

41

6.2.2. GPIO Sample Code

# GPIO example 1: Output (take GPIO 32 as example)
echo 32 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio32/direction
echo 0 > /sys/class/gpio/gpio32/value
echo 1 > /sys/class/gpio/gpio32/value


# GPIO example 2: Input (take GPIO 32 as example)
echo 32 > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio32/direction
cat /sys/class/gpio/gpio32/value