FX30S Serial port stopped communicating

IoT Gateways FX30
1

Hi all,

I’ve come across a problem with my FX30S where initially it is working great for about 3 or 4 days, then suddenly stops working. If I reboot/cycle power, it starts working again.

I recently resolve a problem with the CTS signal being low : FX30S CTS Serial signal not working in latest version - IoT Gateways / FX30 - Sierra Wireless Forum

I set the MAPUART to at!mapuart=15,1 and use port /dev/ttyHS0 in my code for all serial input and output of data.

After a few days when the serial stops communicating with my device, I SSH into the modem to query the FX30S, and I find that the MAPUART is set to 1,16

Other than that, I don’t know what to look for in troubleshooting this problem.

Any thoughts on why the MAPUART setting would change by it self?

Thanks in advance!

Eddie

2

seems the device is back to default as the setting is changed automatically

Is this related to your application?
If not running your application, will the setting being changed?

3

I have 1 app that runs once and calls the command “AT!MAPUART=15,1” to configure the UART initially, then it never runs again.

Other than that, I don’t make any call to the UART.

I haven’t tested to see if the FX30S resets the UART to defaults without my app running.

The funny thing is that if I reboot the FX30S, the serial begins working again. Isn’t MAPUART command not supposed to change upon reboot?

Eddie

4

not quite sure what is changing that setting.
You might need to do some testing on stopping your application

5

Thanks, will do that, but first going to let it run with my app again and time how long before it changes. Might take a couples of days.

Eddie