sms to control pic..pls help...

[f_lez]

thx alot for your help savnik. Are you familiar with this project ?? or does anyone familiar with it ...might need some guidedance ...thx again ...

I just started something similar, was going to use a 2550 but using a f88 at the moment, dont connect port A to your phone, it wont work on the f88, no I dont know why! (just spent a day hitting it)

Connect phone to port B, I used a 1k resistor to protect the phone from the 5v of the pic, but maybe 560ohm would be ok too, I did try none, worked fine, but I put the 1k back to be safe.

I can send data to the T610 and a T68i at T2400 and T9600 with a 4mhz crystal with no problems. I dropped back to 2400 to be safe.

Today I am hoping to get data from the phone back into the pic.

Biggest problem you will have is the format of the sms message is pdu mode0 only............

This means you will have to read in the entire sms which could be 255 chars etc.

I suppose you could limit theincoming data size by discarding what you dont need, IE only send it a short message with short commands.

But you still need to skip over header, and you may want to authenticate the message sender

{edit}
also tried a t100, nothing. dont know why, its old maybe its bust.

{edit2}

Also phone pinouts on web cant be trusted!
I used 4 and 5, 4 is data in to phone, 5 is data out, maybe I should have tried different pins for the t100