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hi
i work with micro arm(at91sam7x256)
yes , i used command printf
i test my program & it works but the problem of my program is when i send sms for the first time my program can read the sms but when i again send an sms it,my program can not read it?
do you have any idea why it happen?
& do...
hi
i work with micro arm(at91sam7x256)
yes , i used command printf
i test my program & it works but the problem of my program is when i send sms for the first time my program can read the sms but when i again send an sms it,my program can not read it?
do you have any idea why it happen?
& do...
hi every body
i want to receive sms with module gsm sim300cz & then i read the sms and then for example i want to forward the text of sms to a number , at the first i can read the text & forward it but for the second time when i send sms until to read text it can not work, i try to solve this...
thanks
at the first i have some question
1-i must give 3v to pin sim_vdd(25) & see i have voltage in vdd simcart?(its correct )& can i give it power(3v) with vdd_ext(because in this pin i have 3v)?
2-which track i cut?(i don't understand your explain about track,can you explain more?)
hi
1-i check my pcb with multimeter ,i dont have any error . i give it 12v but i have again 0v
2-in the data sheet wrote (the sim interface is powerd from an internal regulator in the module having normal voltage 3v)why internal regulator in my module dont work?
3-also i reverse cap...
hi
i remove 100uf but again i have 0v in pin sim_vdd,i don't know what i do?
i am very unhappy ,please help me.in your idea what should i do?why it happen?
hi
i remove 100uf but again i have 0v in pin sim_vdd,i don't know what i do?
i am very unhappy ,please help me.in your idea what should i do?why it happen?
hi
excuse me this is my main PCB that i attach for you.(sim.rar is wrong),
i put a cap 100uf between Sim_vdd & module but when i power on the module it(cap) became short circuit.i don't know why it happen.
excuse me i don't understand what i do?please can you explain again what i do. (all of my...
hi
in your opinion ,i must change my supply(adaptor),is it possible that it doesn't work well(it is fault) ?
and is there any problem in my circuit?
and excuse me is there any command that i can check my current power supply or is there any way that i understand my current power supply?
in...
hi
thank you from your advise
1-my module dont work with other simcart
2-in pin SIM_VDD,no output voltage is available to drive my SIMCARD.(without sim or with sim i have 0v in sim_vdd)
3-when i use command at&v i see:
at&v
ACTIVE PROFILE
E: 1
L: 0
M: 0
Q: 0
V: 1
X: 4
S0: 0
S2: 43
S3: 13
S4: 10...
Hi,Thanks a lot for your help
I can communicate with hyper terminal and when I send at command I have respond but when I want to send sms I have this errors.
at+cpin?
Sim not inserted
at+cmgs=1
+CMS ERROR: SM BL not ready
I used lm2576 for my power supply & attach my schematic to see .
Best...
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