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Hi :)
I was able to solve my problem ^^ An interrupt issue ^^
But the next problem:
I try to change the time on the Sim908 but he don't let me do this.
I send AT+CCLK="12/08/27,12:25:54+08" and the answer is +CME ERROR: operation not allowed
Does anybody knows what it mean? :?:
lol .... i...
So ... what I found out:
To get the 49 49 49 49 FF FF FF FF on debug port is normal.
Did you pull down DTR as recommended and described in S.15 (Sim908 Hardware Design V1.06 Pdf)?
I send "AT" and I get "AT" back . If I send more like "AT+CMTE" i get "AT" back. Thats so strange ...
The Device...
Hi
Got the same problems here. IIII
Do you try to syncronise over the debug port or over normal Pins 66 - 72?
Do you use only txd and rxd ? Is dtr connected with ground?
My connection is established to my Provider. I can see it on the Leds.
But i can't get access over rs232.
Which kind of...
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