sms_handler fails

[fmarzocca]

Hi,

my GSM modem is a Huawei:
Bus 001 Device 008: ID 12d1:155e Huawei Technologies Co., Ltd.

I am trying to run sms_handler.py, but it always fails on start and exits after printing "Waiting for SMS messages":

Initializing modem...
INFO: Connecting to modem on port /dev/ttyUSB2 at 115200bps
DEBUG: write: ATZ
DEBUG: response: ['OK']
DEBUG: write: ATE0
DEBUG: response: ['OK']
DEBUG: write: AT+CFUN?
DEBUG: response: ['+CFUN: 1', 'OK']
DEBUG: write: AT+CMEE=1
DEBUG: response: ['OK']
DEBUG: write: AT+CPIN?
DEBUG: response: ['+CPIN: READY', 'OK']
DEBUG: write: AT+CLAC
DEBUG: response: ['ERROR']
DEBUG: write: AT
DEBUG: response: ['OK']
DEBUG: write: AT^CVOICE=?
DEBUG: response: ['^CVOICE: (0)', 'OK']
DEBUG: write: AT+VTS=?
DEBUG: response: ['+VTS: (0-9,A-D,*,#)', 'OK']
DEBUG: write: AT^DTMF=?
DEBUG: response: ['ERROR']
DEBUG: write: AT^USSDMODE=?
DEBUG: response: ['^USSDMODE: (0-1)', 'OK']
DEBUG: write: AT+WIND=?
DEBUG: response: ['ERROR']
DEBUG: write: AT+ZPAS=?
DEBUG: response: ['ERROR']
DEBUG: write: AT+CSCS=?
DEBUG: response: ['+CSCS: ("IRA","UCS2","GSM")', 'OK']
DEBUG: write: AT+CNUM=?
DEBUG: response: ['OK']
DEBUG: write: AT^CVOICE=0
DEBUG: response: ['OK']
DEBUG: write: AT^USSDMODE=0
DEBUG: response: ['OK']
DEBUG: write: AT+CGMI
DEBUG: response: ['Vodafone (Huawei)', 'OK']
DEBUG: write: AT+CGMI
DEBUG: response: ['Vodafone (Huawei)', 'OK']
DEBUG: write: AT+ZPAS?
DEBUG: response: ['ERROR']
INFO: Unknown/generic modem type - will use polling for call state updates
DEBUG: write: AT+COPS=3,0
DEBUG: response: ['OK']
DEBUG: write: AT+CMGF=0
DEBUG: response: ['OK']
DEBUG: write: AT+CSCA?
DEBUG: response: ['+CSCA: "+393205858500",145', 'OK']
DEBUG: write: AT+CSMP=49,167,0,0
DEBUG: response: ['ERROR']
DEBUG: write: AT+CSCA?
DEBUG: response: ['+CSCA: "+393205858500",145', 'OK']
DEBUG: write: AT+CPMS=?
DEBUG: response: ['+CPMS: ("SM","ME"),("SM","ME"),("SM","ME")', 'OK']
DEBUG: write: AT+CPMS="ME","ME","ME"
DEBUG: response: ['+CPMS: 0,20,0,20,0,20', 'OK']
DEBUG: write: AT+CNMI=2,1,0,2
DEBUG: response: ['OK']
DEBUG: write: AT+CLIP=1
DEBUG: response: ['OK']
DEBUG: write: AT+CRC=1
DEBUG: response: ['ERROR']
WARNING: Extended format incoming call indication not supported by modem. Error: AT+CRC=1
DEBUG: write: AT+CVHU=0
DEBUG: response: ['ERROR']
Waiting for SMS message...

[debackel]

Same problem with my Huawei E303.
Bus 001 Device 007: ID 12d1:1c05 Huawei Technologies Co., Ltd. Broadband stick (modem on)

[OhSoGood]

Did anyone find the cause of this problem?

For info, with the very same hardware (Simcom Sim7600, same Raspberry),

• the sample code has the same issue that you described, on Debian 11 32bit, with python 3.7, python-gsmmodem-new v0.13.0, pyserial 3.4
• but is running fine with Debian 11 64bit, with python 3.9, python-gsmmodem-new v0.13.0, pyserial 3.5b0

Hack to bypass the issue: change modem.rxThread.join(2**31) into modem.rxThread.join()