wanchope
Member level 4
at+csq
Hi, all,
I am testing the siemens GSM/GPRS modem module MC35i.
Everything works fine until one day the modem just hang there although it is still responding to my AT command. But it can not dial any more. When i try to send a message, it returns a error message saying ' sim not inserted'. Then i measured the vCC of the sim card. 0 volt!
The modem engine has already stop powering the sim card as it thought the sim card is not there (already removed). But my sim is still safely sitting in. Just confused why the engine said so. Of course after i restart the power, it is working again. But this problem is still not resolved. Every now and then it will just hand at the 'sim not inserted' state, and a hardware reset is required to restart it.
Any body encounter similar problem, not necessary the same part. Can give a hint?
Thanks.
Wanchope
Hi, all,
I am testing the siemens GSM/GPRS modem module MC35i.
Everything works fine until one day the modem just hang there although it is still responding to my AT command. But it can not dial any more. When i try to send a message, it returns a error message saying ' sim not inserted'. Then i measured the vCC of the sim card. 0 volt!
The modem engine has already stop powering the sim card as it thought the sim card is not there (already removed). But my sim is still safely sitting in. Just confused why the engine said so. Of course after i restart the power, it is working again. But this problem is still not resolved. Every now and then it will just hand at the 'sim not inserted' state, and a hardware reset is required to restart it.
Any body encounter similar problem, not necessary the same part. Can give a hint?
Thanks.
Wanchope