Hi , all
I have GT864-QUAD-PY and GM862 – GPS,
I am issuing the setting to connect to my server and yes , the GT864-QUAD-PY is connect to my PC using normal RS232 cable and I send data to my server without any problem (no lose or other thing ).. now for GM862 – GPS, I have USB to rs232 module , this is a link for the module – link – the GM862 is powered and switch on – I connect
GM862 RX to USB – RX
GM862 Tx to USB – Tx
GM862 GND to USB – GND
and yes from terminal I can send SMS , type differint commands , and the modem replay me with "OK" for each commands
Im issuing similer commands for GT864-QUAD-PY wich make connection to my server which is as following …
replay : OK
replay : OK
AT#USERID="" // no USername
AT#PASSW="" // no password
AT#SKTSET = "0,port,"Server IP" , 255
replay : CONNECT
now I should type some data to see it in my server similer to GT864-QUAD-PY
but the problem is that the module is not sending any data , and it "hang" stop responce to any thing , I Should switch OFF and again Switch ON to be able type commands again !
where is my problem please , did I need to Connect any pin’s such as DTR or RTS ???
please advice and thanks for your modules
By default data traffic needs flow control, if your host doesn’t use disable it with AT&K0.
thanks for your replay
I already disable it using AT&K=0 , but still same problem ?
yes, pull down RTS , and pull up DTR with 47k , solve my problem , for any one who want to use TCP/IP (online mode) you should do that in GM862 ,
thanks for all
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