mangOH Red WP7603 reboots on receiving MT SMS


#1

Hi,

I’m not sure if I should be asking this here or the Legato forums so let me know if this is not the right place.

I’m trying to send an MT SMS to my mangOH and on the sending side I can see it being sent but a few seconds later the device reboots without warning. I’m not using Sierra Wireless SIMs. There are absolutely no warnings or errors in either logread or the console so I have no idea what’s wrong. I enabled the smsInboxService, but it behaves no different with the service disabled. Any help troubleshooting this would be appreciated.


#2

Hello

What power supply is used ?
Direct usb from pc ? Try with external dc power (1A 5V minimum).

BR
Francis


#3

It’s running off the battery that came with the kit. I’ll try external power and report back.


#4

I tried an external wall adapter rated at 2.4A but the results were the same with minor improvements. I could see the SMS was received on 2 out of 10 attempts but it rebooted on the other 8 attempts. Is this a power supply issue?


#5

Can you show the result of logread -f when the reboot happens?


#6

As I mentioned in my opening post, the device simply reboots - there is nothing in the log.

Here are the last few lines before the reboot:

Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c batteryTimer() 877 | **********************
Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetChargeStatus() 549 |  Charge =  Full
Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetHealthStatus() 496 |  health =  Good
Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c batteryTimer() 877 | **********************
Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetChargeStatus() 549 |  Charge =  Full
Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetHealthStatus() 496 |  health =  Good
------------ [Mon, 22 Oct 2018 16:05:12 -0700] Disconnect ------------

#7

Can you try with a Sierra Wireless SIM? We will try to replicate the issue as well but dont believe it is a power supply issue.


#8

We have replicated this setup on our side and dont see the issue. @Habib can you describe the setup you used?


#9

I just used mangOH Red with the latest released software and Telus SIM and power up through the USB connector from my Laptop.
I sent a few SMS and received by device. There was no reboot.
If you do differently please let’s know then we can repeat the test.

root@swi-mdm9x28:~# cm info
Device: WP7603
IMEI: 357409080008560
IMEISV: 4
FSN: U3734285300306
Firmware Version: SWI9X07Y_02.16.02.00 000000 jenkins 2018/04/19 19:59:02
Bootloader Version: SWI9X07Y_02.16.02.00 000000 jenkins 2018/[ 3522.441823] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:2) mode:FIFO slv_addr:0x3a MSTR_STS:0x0c1300c8 OPER:0x00000090
04/19 19:59:02
MCU Version: 002.009
PRI Part Number (PN): 9906965
PRI Revision: 002.001
Carrier PRI Name: GENERIC
Carrier PRI Revision: 002.032_000
SKU: 1103194
Last Reset Cause: Power Down
Resets Count: Expected: 39 Unexpected: 11
root@swi-mdm9x28:~# legato version
18.03.0_b463e04cf08fb8d8f1ea5ee00d7894c0

Power: ON
Current Network Operator: TELUS
Current RAT: LTE network (LE_MRC_RAT_LTE)
Status: Registered, home network (LE_MRC_REG_HOME)
Signal: Very strong signal strength (5)
PS: Packet Switched Registered, home network (LE_MRC_REG_HOME)


#10

Probably best to use a proper power supply - Laptop USB ports are not great to rely on as power sources…

How, exactly, are you sending the SMS ?
Are you using any special characters, long messages, etc, etc ?

Do you have a cellular modem to just send a known, simple, straightforward text message?

EDIT

Is the behaviour different if you send from different devices?

Can you successfully send SMS from the mangOH?


#11

I sent short texts like “testing” from my iPhone and could see the message pops up on my AT Command port as below e.g. number 7 indicates 7th received message. However it never reboots.
+CMTI: “SM”,7


#12

Thanks for taking time to try and reproduce the problem @asyal and @Habib. Unfortunately, I couldn’t get my hands on a Sierra Wireless SIM to try with a different SIM card. However, I found that turning off the bluetoothUtil app seems to have a positive effect and I’m able to receive an SMS when I do that. I cannot explain this behavior. I’m using the Talon Bluetooth / WiFi card and currently only using Bluetooth on it.


#13

Sorry, my questions above should have been directed to @ktanikel rather than @Habib :