sorry,
i am using mikroc a IR led to control the air conditioner and its working,
my problem is when the pic communicate with sim900.
i try to explain with this line:
pic send:AT+CMGF=1
sim900 send:OK
pic send:AT+CMGDA="DEL ALL"
sim900 send:OK
"when sim get sms"
sim900 send:\r\n +CMTI: "SM",1 \r\n
pic send:AT+CMGL="ALL"
sim900 send: \r\n +CMGL: 1,"REC UNREAD","+972542230352","","14/09/23,21:11:21+12" \r\n
ACON(sms content)\r\n
OK
after sim900 send "\r\n +CMTI: "SM",1 \r\n"
nothing happen, if i`m using a pc terminal to send commands to pic (instead the sim900)
everything work fine