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1: 2021-09-07 (火) 09:39:03 takaboo |
| + | ***various internal value monitors [#r560210a] |
| + | $ watch -n 1 sudo vcgencmd measure_clock arm |
| + | $ watch -n 1 sudo vcgencmd measure_volts |
| + | $ watch -n 1 sudo vcgencmd measure_temp |
| | | |
| + | *+*stop rpi3 boot splash [#t2669980] |
| + | /boot/config.txt |
| + | add disable_splash=1 |
| + | |
| + | cd /boot |
| + | sudo mkdir /media/restorey |
| + | sudo mount /dev/mmcblk0p1/media/recovery/ |
| + | sudo cp config.txt /media/recovery/ |
| + | sudo restart |
| + | |
| + | ***gpio heartbeat [#u4e95b61] |
| + | dtparam=act_led_trigger=heartbeat |
| + | dtoverlay=act-led,gpio=16 |
| + | |
| + | ***use gpio on ubuntu [#lf884468] |
| + | sudo apt-get install wiringpi |
| + | |
| + | sudo dpkg --add-architecture armhf |
| + | sudo apt-get install libc6 |
| + | sudo apt-get install libc6:armhf libgcc1:armhf |
| + | |
| + | sudo apt-get install wget |
| + | |
| + | cd /tmp |
| + | wget https://project-downloads.drogon.net/wiringpi-latest.deb |
| + | sudo dpkg -i wiringpi-latest.deb |
| + | |
| + | |
| + | $ gpio -v |
| + | gpio version: 2.52 |
| + | Copyright (c) 2012-2018 Gordon Henderson |
| + | This is free software with ABSOLUTELY NO WARRANTY. |
| + | For details type: gpio -warranty |
| + | |
| + | Raspberry Pi Details: |
| + | Type: Pi 4B, Revision: 04, Memory: 8192MB, Maker: Sony |
| + | * Device tree is enabled. |
| + | *--> Raspberry Pi 4 Model B Rev 1.4 |
| + | * This Raspberry Pi supports user-level GPIO access. |