Quectel disconnect after action on relay and at boot

End-of-Life Product Cellular IoT Application Shield
1

Hello,

Problem of the day for me.

At each reboot, I needed to press button PWRKEY on board to activate wwan0 device.

And at each time I launched action on relay with this script:

#!/usr/bin/env python3

from cellulariot import cellulariot
import time

node = cellulariot.CellularIoTApp()
node.setupGPIO()

time.sleep(0.5)
node.turnOnRelay()

or

#!/usr/bin/env python3

from cellulariot import cellulariot
import time

node = cellulariot.CellularIoTApp()
node.setupGPIO()

time.sleep(0.5)
node.turnOffRelay()

Device wwan0 disapears. And I needed to press again manually button PWRKEY on board.

I installed qmi-reconnect, but at reboot, no more works.

What I can do?
Thanks

2

Hi @fred,

You can use node.powerUp() to power up the module instead of pressing the power key physically.

Thank you.

3

Hi @ensar

Thanks, I tried this python part:

#!/usr/bin/env python3

from cellulariot import cellulariot
import time

node = cellulariot.CellularIoTApp()
node.setupGPIO()

time.sleep(0.5)
node.powerUp()

I have this return:

Sixfab Raspberry Pi Cellular IoT Application Shield Class initialized!
BG96 module powered up!

But no more wwan0.

/sbin/ifconfig wwan0 | grep "inet " | awk '{ print $2 }'
wwan0: erreur lors de la recherche d'infos sur l'interface: P_riph_rique non trouv_

:cry:

4

Finally I created a script like this:

#!/usr/bin/env python3

from cellulariot import cellulariot
import time

node = cellulariot.CellularIoTApp()
node.setupGPIO()

time.sleep(1)
node.enable()
node.powerUp()

And created a systemd wwan0.service to powerup at boot.

I don’t know if it’s correct practice, but it’s work.