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No response from AT command (Gemalto EHS6T-Lan) | Thales IoT Developer Community

hoopy

October 5, 2017 - 5:48am, 1990 views

Hi Guys,

My Gemalto ****m hung after some period of time if no usage. I won't have any response from AT command after I access via telnet and port and issue the AT command. It just hung there and seems waiting for response.

AT command no response

I checked on the log file under /var/log/smsd.log and it's not updated. Last messages was as following. After I restart the ****m, it will be working fine after that. 

The only file that up to dated when I have the problem is the folder named /tmp/lock with "LCK..ttyACM4" file within it which have number which I suspecting is PID. When I try to find the process the file auto deleted.

Not sure what's the problem here

 2017-10-04 11:36:41,6, ehs6: Selecting PDU ****
2017-10-04 11:36:42,7, ehs6: -> AT+CMGF=0
2017-10-04 11:36:42,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:42,7, ehs6: <- OK
2017-10-04 11:36:42,6, ehs6: Checking memory size
2017-10-04 11:36:42,7, ehs6: -> AT+CPMS?
2017-10-04 11:36:42,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:42,7, ehs6: <- +CPMS: "ME",0,4,"ME",0,4,"ME",0,4 OK
2017-10-04 11:36:42,6, ehs6: Used memory is 0 of 4
2017-10-04 11:36:42,6, ehs6: No SMS received
2017-10-04 11:36:52,6, ehs6: Checking device for incoming SMS
2017-10-04 11:36:52,6, ehs6: Checking if ****m is ready
2017-10-04 11:36:53,7, ehs6: -> AT
2017-10-04 11:36:53,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:53,7, ehs6: <- OK
2017-10-04 11:36:53,6, ehs6: Pre-initializing ****m
2017-10-04 11:36:53,7, ehs6: -> ATE0+CMEE=1;+CREG=2
2017-10-04 11:36:53,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:53,7, ehs6: <- OK
2017-10-04 11:36:53,6, ehs6: Initializing ****m
2017-10-04 11:36:54,7, ehs6: -> AT+CPMS="ME","ME","ME"
2017-10-04 11:36:54,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:54,7, ehs6: <- +CPMS: 0,4,0,4,0,4 OK
2017-10-04 11:36:54,7, ehs6: -> AT+CSQ
2017-10-04 11:36:54,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:54,7, ehs6: <- +CSQ: 15,99 OK
2017-10-04 11:36:54,6, ehs6: Signal Strength Indicator: (15,99) -83 dBm (Good), Bit Error Rate: not known or not detectable
2017-10-04 11:36:54,6, ehs6: Checking if Modem is registered to the network
2017-10-04 11:36:55,7, ehs6: -> AT+CREG?
2017-10-04 11:36:55,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:55,7, ehs6: <- +CREG: 2,1,"2EE1","04B0265B",6 OK
2017-10-04 11:36:55,6, ehs6: Modem is registered to the network
2017-10-04 11:36:55,6, ehs6: Selecting PDU ****
2017-10-04 11:36:55,7, ehs6: -> AT+CMGF=0
2017-10-04 11:36:55,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:55,7, ehs6: <- OK
2017-10-04 11:36:55,6, ehs6: Checking memory size
2017-10-04 11:36:56,7, ehs6: -> AT+CPMS?
2017-10-04 11:36:56,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:36:56,7, ehs6: <- +CPMS: "ME",0,4,"ME",0,4,"ME",0,4 OK
2017-10-04 11:36:56,6, ehs6: Used memory is 0 of 4
2017-10-04 11:36:56,6, ehs6: No SMS received
2017-10-04 11:37:06,6, ehs6: Checking device for incoming SMS
2017-10-04 11:37:06,6, ehs6: Checking if ****m is ready
2017-10-04 11:37:06,7, ehs6: -> AT
2017-10-04 11:37:06,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:37:06,7, ehs6: <- OK +CREG: 1,"2EE1","04B02658",6
2017-10-04 11:37:06,6, ehs6: Pre-initializing ****m
2017-10-04 11:37:07,7, ehs6: -> ATE0+CMEE=1;+CREG=2
2017-10-04 11:37:07,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:37:17,7, ehs6: put_command expected (OK)|(ERROR), timeout occurred. 1.
2017-10-04 11:37:17,7, ehs6: <-
2017-10-04 11:37:17,3, ehs6: Modem did not accept the pre-init string
2017-10-04 11:37:17,6, ehs6: Initializing ****m
2017-10-04 11:37:17,7, ehs6: -> AT+CPMS="ME","ME","ME"
2017-10-04 11:37:17,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:37:27,7, ehs6: put_command expected (OK)|(ERROR), timeout occurred. 2.
2017-10-04 11:37:27,7, ehs6: <-
2017-10-04 11:37:27,7, ehs6: -> AT+CPMS="ME","ME","ME"
2017-10-04 11:37:27,7, ehs6: Command is sent, waiting for the answer
2017-10-04 11:37:37,7, ehs6: put_command expected (OK)|(ERROR), timeout occurred. 3.