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Created page with "1) There are two LED lights on the development board, one is green and the other is red. The location is shown in the figure below:<br><br> Image:Pi-5-details-pic59.png<br..."
1) There are two LED lights on the development board, one is green and the other is red. The location is shown in the figure below:<br><br>
[[Image:Pi-5-details-pic59.png]]<br><br>
2) As long as the development board is powered on, the red LED light will always be on, which is controlled by the hardware and cannot be turned off by the software.<br><br>
3) The green LED light will keep flashing after the kernel is started, which is controlled by software.<br><br>
4) The method of setting the green light on and off and flashing is as follows<br>
{| class="wikitable" style="background-color:#ffffdc;width:800px;"
|-
| <br><big>'''Note that the following operations should be performed under the root user.'''</big><br><br>
|}
a. First enter the setting directory of the green light<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:~# '''cd /sys/class/leds/status_led'''
|}
b. The command to set the green light to stop flashing is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo none''' > trigger
|}
c. The command to set the green light to be on is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo 1 > brightness'''
|}
d. The command to set the green light to flash is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo heartbeat > trigger'''
|}
[[Image:Pi-5-details-pic59.png]]<br><br>
2) As long as the development board is powered on, the red LED light will always be on, which is controlled by the hardware and cannot be turned off by the software.<br><br>
3) The green LED light will keep flashing after the kernel is started, which is controlled by software.<br><br>
4) The method of setting the green light on and off and flashing is as follows<br>
{| class="wikitable" style="background-color:#ffffdc;width:800px;"
|-
| <br><big>'''Note that the following operations should be performed under the root user.'''</big><br><br>
|}
a. First enter the setting directory of the green light<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:~# '''cd /sys/class/leds/status_led'''
|}
b. The command to set the green light to stop flashing is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo none''' > trigger
|}
c. The command to set the green light to be on is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo 1 > brightness'''
|}
d. The command to set the green light to flash is as follows<br>
{| class="wikitable" style="width:800px;"
|-
|root@orangepi:/sys/class/leds/status_led# '''echo heartbeat > trigger'''
|}
