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jbruce 2018-12-03 14:42:36 -05:00
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troubleshooting.md
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@ -57,10 +57,10 @@ and you'll get output that looks something like this...
+-----+-----+---------+------+---+---Pi 3---+---+------+---------+-----+-----+
```
make sure the mode for all GPIO pins you want to test have a Mode of IN
make sure all the GPIO pins you want to test have a **Mode** of **IN** to make it in input
if not, set the mode for each..
set BCM pin 4 as an input
so, for example, to set **BCM** pin 4 as an input
```gpio -g mode 4 input```
@ -68,12 +68,12 @@ verify it got set correctly using
```gpio readall```
enable pull-down resistor for pin 4 to make sure V stays zero when nothing is connected to the input
enable pull-down resistor for pin 4 to make sure **V** stays zero when nothing is connected to the input
```gpio -g mode 4 down```
This will show you the output of gpio readall every 2 seconds. This way you can concentrate on
moving a wire to each gpio pin and then look up to verify V has changed as you expect without
moving a wire to each gpio pin and then look up to verify **V** has changed as you expect without
having to type.
```watch gpio readall```