树莓派控制主板自带LED灯

原文在这里:https://www.jeffgeerling.com/blogs/jeff-geerling/controlling-pwr-act-leds-raspberry-pi

主要是用于信息反馈。

# Set the PWR LED to GPIO mode (set 'off' by default).
echo gpio | sudo tee /sys/class/leds/led1/trigger

# (Optional) Turn on (1) or off (0) the PWR LED.
echo 1 | sudo tee /sys/class/leds/led1/brightness
echo 0 | sudo tee /sys/class/leds/led1/brightness

# Revert the PWR LED back to 'under-voltage detect' mode.
echo input | sudo tee /sys/class/leds/led1/trigger

# Set the ACT LED to trigger on cpu0 instead of mmc0 (SD card access).
echo cpu0 | sudo tee /sys/class/leds/led0/trigger

还要以在/boot/config.txt中设置关闭

# Disable the ACT LED.
dtparam=act_led_trigger=none
dtparam=act_led_activelow=off

# Disable the PWR LED.
dtparam=pwr_led_trigger=none
dtparam=pwr_led_activelow=off

在Pi Zero中只有一个灯

# Set the Pi Zero ACT LED trigger to 'none'.
echo none | sudo tee /sys/class/leds/led0/trigger

# Turn off the Pi Zero ACT LED.
echo 1 | sudo tee /sys/class/leds/led0/brightness

你可能感兴趣的:(杂谈)