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en:xu4_led_control [2017/05/12 21:25] odroid |
en:xu4_led_control [2017/05/12 21:31] (current) odroid |
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| - | We can control the **blue LED**<color #00a2e8>Turquoise Highlighted Text</color> with trigger node. | + | We can control the <color #00a2e8>**blue LED**</color> with the trigger node in sysfs. |
| + | But the red LED is hard-wired to the power input rail and we can't control it. | ||
| **Turn off** | **Turn off** | ||
| Line 19: | Line 20: | ||
| </code> | </code> | ||
| - | There are many more triggers. But some of them may not work. | + | There are many other trigger modes. But some of them may not work. |
| <code>cat /sys/class/leds/blue\:heartbeat/trigger </code> | <code>cat /sys/class/leds/blue\:heartbeat/trigger </code> | ||
| - | If you want to turn the **LED**<color #00a2e8>Turquoise Highlighted Text</color> off permanently, edit /etc/rc.local file to add "echo none > /sys/class/leds/blue\:heartbeat/trigger". | + | |
| + | <note tip>If you want to turn the <color #00a2e8>**LED**</color> off automatically in boot process,\\ add <color #ff7f27>echo none > /sys/class/leds/blue\:heartbeat/trigger</color> in /etc/rc.local file</note> | ||
