dear all, i am using at89c52 along with SIM300 i am using it for sending/receiving TEXT- SMS one of the program function is to send a SMS whenever SIM300 is turned on (sending sort of initial h/w status through sms) here i am having a problem; coz out of 10 tries i am getting SMS in 7-8 tries only for remaining 2-3 tries it simply doesn't send any sms i am giving 30-sec of delay after powering up the SIM300 as a booting time i don't know why am I not getting 100% result
any suggestion regards
here i am having a problem; coz out of 10 tries i am getting SMS in 7-8 tries only for remaining 2-3 tries it simply doesn't send any sms because you are workng with SMS you do not need to post in SMS
how do you detect that this is power up, conversely, how do you detect the start message is sent?
Erik
I have kept some routine outside the main-while() loop and those routine will only be accessed by the program when its power_Up or RESET condition