Differences

This shows you the differences between two versions of the page.

--- gpio_control_from_command_line [2017/01/22 14:04] – [Install WiringPi] walkeradmin
+++ gpio_control_from_command_line [2017/01/22 16:06] – [Install WiringPi] walkeradmin
@@ Line 47: / Line 47: @@
 \\
 \\
-    gpio -readall
+    gpio readall
 \\
 This will give an output similar to below (This output is from a Pi Zero v1.3)
@@ Line 88: / Line 88: @@
 \\
 \\
+Before looking at the commands, there is a switch I want to talk about, this is <color red>-g</color>. If you use the -g switch you are operating on BCM numbers, not PIN numbers. I always use BCM numbers, but some people prefer pin numbers.
+\\
+\\
+To set the function of the GPIO pin, use <color red>gpio -g mode</color>
+\\
+\\
+    using BCM number
+    gpio -g mode 18 out - Sets GPIO18 to OUTput mode (GPIO18 is physical pin 12)
+    using pin instead of bcm
+    gpio mode 12 out - Sets GPIO18 to OUTput mode (GPIO18 is physical pin 12)
+    Modes are In, Out, PWM, Up, Down and Tri.
+\\
+\\
+Set GPIO pin to 1 or 0
+\\
+\\
+    gpio -g write 18 0 - sets GPIO18 to a zero.
+    gpio -g write 18 1 - sets GPIO18 to a one.
+\\
+\\
+----