[Feature Request] Identify / LED Blink function

[mkopec]

Can we add an "identify" function to the WebUI that would blink an LED, to make it easier to find a given RTE in a rack full of RTEs? We have lots of RTEs in the rack now and finding one can be a problem.

[krystian-hebel]

It should also have a timeout (5 min?), otherwise it is something that I would forget to turn off after locating RTE.

[macpijan]

Do you have a specific LED in mind?

I'm not sure if we have capacity and skills to continue with the web UI development. Are you using that one?
But at least extending the HTTP API should be feasible.

[macpijan]

I do not see any LED on RTE we can control. D2 and D3 are hardwired to power.

You can use RED LED from OPi Zero with:

root@rte:~# echo 1 > /sys/class/leds/orangepi\:red\:status/brightness                                                                                                                                                                      
root@rte:~# echo 0 > /sys/class/leds/orangepi\:red\:status/brightness

[macpijan]

So something like should do the trick as a minimum solution

#!/bin/bash                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                            
LED_PATH="/sys/class/leds/orangepi:red:status/brightness"                                                                                                                                                                                   
                                                                                                                                                                                                                                            
turn_on() {                                                                                                                                                                                                                                 
    echo 1 > "$LED_PATH"                                                                                                                                                                                                                    
}                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                            
turn_off() {                                                                                                                                                                                                                                
    echo 0 > "$LED_PATH"                                                                                                                                                                                                                    
}                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                            
blink() {                                                                                                                                                                                                                                   
    local count=0                                                                                                                                                                                                                           
    local max_count=10                                                                                                                                                                                                                      
                                                                                                                                                                                                                                            
    while [ $count -lt $max_count ]; do                                                                                                                                                                                                     
        turn_on                                                                                                                                                                                                                             
        sleep 1                                                                                                                                                                                                                             
        turn_off                                                                                                                                                                                                                            
        sleep 1                                                                                                                                                                                                                             
        ((count++))
    done
}

blink