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==Preface==
UPS 3 reserve power off hardware GPIO port to implement software full shutdown, this article introduces how to use the GPIO port of UPS3 to realize software shutdown function.
==Check wirinpi version==
In Raspberry Pi 4b, wiringPi 2.49 or wirinpi 2.50 will generate an error if the ‘gpio readall’ command is used to read the pin information, so it should be upgraded to wirinpi 2.52. If you use Raspberry Pi 3b, you don't need to upgrade.
[[File:UPS3-power-off-guide-1.png|none]]
Before upgrading, you should uninstall the original wiringpi first, uninstall method depend on your installation directory, execute the following command in the installation directory
./build uninstall
sudo apt-get remove wiringpi
sudo apt-get purge wiringpi
hash -r
'''The above uninstall action is optional, you need execute uninstall action if you meet some questions when you upgrade wirinpi.'''
==How to update wirinpi V2.5 to wirinpi 2.52?==
cd ~
mkdir tmp
cd tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
Please download [[File:Wiringpi-latest.zip]] and unzip it if you don't visit https://project-downloads.drogon.net/wiringpi-latest.deb
Then run command the following command to check the wirinpi library version
gpio –v
[[File:UPS3-power-off-guide-2.png|none]]
OK, the wirinpi library version is updated to V2.52 now
==Check the power off PIN of UPS 3 board==
[[File:UPS3-power-off-guide-3.png|none]]
If pin 0 and pin1 are connected, the GIPO is 6, if pin 0 and pin2 are connected, the GPIO is 13
==How to software full shut down?==
gpio -v
gpio –g mode 6 out #6 is the power off GPIO pin, 6 and 13 is optional, it depend on the previous selection
gpio readall
[[File:UPS3-power-off-guide-4.png|none]]
gpio –g write 6 1 #this is the shutdown command
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[[Category:Raspberry pi]]
[[Category:Knowledge]]
==Preface==
UPS 3 reserve power off hardware GPIO port to implement software full shutdown, this article introduces how to use the GPIO port of UPS3 to realize software shutdown function.
==Check wirinpi version==
In Raspberry Pi 4b, wiringPi 2.49 or wirinpi 2.50 will generate an error if the ‘gpio readall’ command is used to read the pin information, so it should be upgraded to wirinpi 2.52. If you use Raspberry Pi 3b, you don't need to upgrade.
[[File:UPS3-power-off-guide-1.png|none]]
Before upgrading, you should uninstall the original wiringpi first, uninstall method depend on your installation directory, execute the following command in the installation directory
./build uninstall
sudo apt-get remove wiringpi
sudo apt-get purge wiringpi
hash -r
'''The above uninstall action is optional, you need execute uninstall action if you meet some questions when you upgrade wirinpi.'''
==How to update wirinpi V2.5 to wirinpi 2.52?==
cd ~
mkdir tmp
cd tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
Please download [[File:Wiringpi-latest.zip]] and unzip it if you don't visit https://project-downloads.drogon.net/wiringpi-latest.deb
Then run command the following command to check the wirinpi library version
gpio –v
[[File:UPS3-power-off-guide-2.png|none]]
OK, the wirinpi library version is updated to V2.52 now
==Check the power off PIN of UPS 3 board==
[[File:UPS3-power-off-guide-3.png|none]]
If pin 0 and pin1 are connected, the GIPO is 6, if pin 0 and pin2 are connected, the GPIO is 13
==How to software full shut down?==
gpio -v
gpio –g mode 6 out #6 is the power off GPIO pin, 6 and 13 is optional, it depend on the previous selection
gpio readall
[[File:UPS3-power-off-guide-4.png|none]]
gpio –g write 6 1 #this is the shutdown command
<!--Add review function! -->
<comments />
<!--Please choose the -->
<!--Remove other categories, just keep the appropriate categories -->
[[Category:Raspberry pi]]
[[Category:Knowledge]]