Script reboot failing

[fbrun@domizy]

Hi,

I'm trying to reboot a wiser for KNX with a script.
Using this "os.execute('reboot')", the server doesn't reboot.

I also tested this "os.execute(reboot)" but i have the same result.


Respectfully,
BRUN Félix.

[Daniel]

In General configuration there is Block unsafe functions in scripts:
Make sure to disable it.

[fbrun@domizy]

In General configuration there is Block unsafe functions in scripts:
Make sure to disable it.

Thanks Daniel !

[JMM]

Hi,
I have the same problem as fbrun@domizy to reboot LM5, I don't understand Daniel's answer
BR

[Daniel]

Utilities-> General configuration...

[JMM]

Thanks Daniel, it's OK

---

Is it also possible to reset the USB port by script, I have a Uart rs232 which from time to time blocks and I am obliged to unplug and replug

[Daniel]

What is the device you have problem with?

[JMM]

It's : FTDI - FT232R USB UART

[Daniel]

Did you check if just reboot helps? I think it will need power down anyway.

[JMM]

Yes reboot helps, I read the frame of a Linky electric meter every minute, some day at 8:00 a.m. the meter sends the tariff change and the ft232 blocks so either reboot or disconnect reconnect

---

It's not from the script!!

[JMM]

Code:

-- Script USB Reset Final pour LM5 OpenRB
-- Version simplifiée et optimisée

local function write_file_safe(file, value)
    local f = io.open(file, "w")
    if f then
        local success, err = pcall(function()
            f:write(value)
            f:close()
        end)
        if success then
            log("✓ Reset: " .. file)
            return true
        end
    end
    return false
end

-- Configuration LM5 validée
local USB_BUSES = {
    "/sys/devices/platform/soc/2100000.aips-bus/2184000.usb/ci_hdrc.0/usb1",
    "/sys/devices/platform/soc/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb2"
}

-- Reset USB rapide et efficace
local function restart_usb_lm5()
    log("=== Redémarrage USB LM5 ===")
   
    for i, bus_path in ipairs(USB_BUSES) do
        log("Reset bus USB" .. i .. "...")
       
        -- Désauthoriser le bus
        write_file_safe(bus_path .. "/authorized", "0")
        os.execute("sleep 1")
       
        -- Réauthoriser le bus 
        write_file_safe(bus_path .. "/authorized", "1")
        os.execute("sleep 1")
    end
   
    log("✓ Reset USB terminé")
   
    -- Attendre la détection des périphériques
    os.execute("sleep 2")
   
    -- Vérification
    log("Vérification des périphériques USB...")
    local handle = io.popen("dmesg | grep -E 'ttyUSB|ftdi_sio|SerialNumber' | tail -5 2>/dev/null")
    if handle then
        for line in handle:lines() do
            log("  > " .. line)
        end
        handle:close()
    end
   
    log("=== Fin du redémarrage ===")
end

-- Fonction principale simplifiée
local function main(arg)
    if #arg == 0 or arg[1] == "restart" then
        restart_usb_lm5()
    else
        log("Usage: main({\"restart\"}) ou main({})")
    end
end

-- Auto-exécution
main({})

It's OK With the help of Claude.ai 

[admin]

You can power cycle USB port like this:

Code:

io.writefile('/dev/usbctrl', 'low')
os.sleep(1)
io.writefile('/dev/usbctrl', 'high')
os.sleep(1)

Make sure that serial port is not open in a script when doing the power cycle. Otherwise the port name might change and script won't work.

[JMM]

Thanks Daniel, but is not work

[JMM]

Hello,

Is there a way from a Lua script (or system command via os.execute()) to completely cut and restore the 5V power supply to a USB port on the LM5?

BR

[Erwin van der Zwart]

Could be “block unsafe scripts” in general configuration io.writefile could be blocked, not sure if that is also on LM..

[Daniel]

Could be “block unsafe scripts” in general configuration io.writefile could be blocked, not sure if that is also on LM..

No it's not.

[admin]

What is your LM hardware version (printed on the sticker on the side of the housing)?

Create an event script mapped to a binary object to control USB power power:

Code:

state = event.getvalue() and 'high' or 'low'
io.writefile('/dev/usbctrl', state)

Check System config > Status > System log, you should see that USB converter is disconnected when the port is powered down. Similar to this:

Code:

Jul 7 11:17:03 LogicMachine kern.info kernel: [11838588.128976] cp210x 1-1:1.0: device disconnected
Jul 7 11:17:03 LogicMachine kern.info kernel: [11838588.128729] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Jul 7 11:17:03 LogicMachine kern.info kernel: [11838588.128345] usb 1-1: USB disconnect, device number 4