Designing GSM module with microcontroller and GSM chipset/IC

[bigdogguru]

Are you aware the Nokia 3220 implements a proprietary communication link, FBUS and MBUS?

FBUS & MBUS adapters

BigDog

 

[samEEEf]

You may need to put the phone into "AT Command Entry Mode".

Have you found the phone's documentation covering it's AT Command Set?

If so, can you either upload or post a link?

BigDog

Didn't find any document specific to Nokia 3220.

---------- Post added at 08:25 ---------- Previous post was at 07:59 ----------

I was aware of F-Bus/M-bus but not tried. Such adapter seems complicated. Currently my connection is as like as shown here - Nokia ST (Star Torrent) 2112, 2115, 2270, 2272, 2280, 2285, 3100, 3105, 3108, 3120, 3125, 3200, 3205, 3220, 3585, 3586, 3587, 3588, 3589i, 5100, 5140, 6011i, 6012, 6015, 6015i, 6016i, 6019i, 6020, 7210, 7360 pop-port LIKE-DKU-5 or CA-42 cable schemat

Only difference is - I've used PC's USB power supply instead of 7805 IC shown in the above link.

 

[samEEEf]

Here I got a schematic of F-Bus serial data cable -
nokia-tuning.net - F-Bus serial data cable shematics

 

[halee awan]

I suggest you gothrough the link


Feel free to ask any Question

 

[RaminGsm]

hello
i design a pic18f252 board to connect with a sim900 board. i can send and receive data to/from computer with my picmicro(baud:9600 8N1None).also i can connect ma sim900 module to pc with rs232 serial(baud:9600 8N1None).but when i connect picmicro board to sim900 module and send (AT+0x0D+0x0A) to sim900,H receive AT instead OK.
please help me.
thank you.

 

[alexxx]

when i connect picmicro board to sim900 module and send (AT+0x0D+0x0A) to sim900,H receive AT instead OK.

Is there a chance to have the echo option enabled and you read back your transmitted data before modem's answer?

 

[ckshivaram]

yes , you can in hyperterminal, go to properties, ascii setup and enable echo in hypertermina.

 

[RaminGsm]

my Program in mikroc Pro is:
#define LED1 PORTA.B0
#define LED2 PORTA.B1
#define Buzzer PORTB.B4

char receive;
void main()
{
int i=1;
TRISA.B0=0;
TRISA.B1=0;
TRISB.B4=0;
TRISC.B6=0;
TRISC.B7=1;

UART1_Init(9600);
delay_ms(400);
UART1_Write_Text("AT\r");
delay_ms(200);

while(i==1)
{ //First while loop
if(UART1_Data_Ready()==1)
{
receive = UART1_Read();
if((receive=='K')||(receive==0x4B)||(receive=='k')||(receive==75)||(receive=='O')) LED2=1;
else if(receive=='A') Buzzer=1;
else LED1=1;
}
}
}
and my serial connection is in attach pdf file.
in hyperterminal(between sim900 and pc) i don't have any problem.
but problem is in connection between picmicro and sim900 modoule .

 

[darkness.signals]

hi.is there any reference design for x-gold101(xmm1010)?
i cant found any!