sms to control pic..pls help...

[Ziki]

hi ....i doing a project on sms to control a robot ....i'm using t610 SE phone as GSM phone as it can support AT command , the pic i'm using is just 16F84 ....can give me a abit of guide lines ??.....1st of all ...can tell me which pin of the phone is for TX,RX and ground ...?
pls help ....
thx alot

[savnik]

SonyEricsson R520, R310, R320, T28, T39, T68, T68i, R600, T610, T310 and others cell phones pinout
http://pinouts.ru/CellularPhones-A-N...8_pinout.shtml

[Ziki]

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

[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

[Ziki]

thx for the info ... i believe t610 can support text mode ? izzit true ?

[f_lez]

thx for the info ... i believe t610 can support text mode ? izzit true ?

No the t100, t68, t681, t610 I can say with definate authority only support PDU mode.

This makes them a total pain for sms controllers.

You have to type the sms command very carefully......

If you sent alarm arm it would be 09417658DE0685E56D
if you sent alarm arm. it would be 0A417658DE0685E56D17
If you sent alarm arm it would be 09A0203B2C6F83DE6E


Just one extra space makes it totally different.....

You have to be very strict on how messages have to be sent, which also means you can just check parts of the string like this as most of it will always be the same.

Alarm arm 0AD09417658DE0685E56D
Alarm off 0AD09417658DE06BDCD66

You can just test at various points to parse it IE

0AD09 (4176) 58DE06B (DCD) 66
0AD09 (4176) 58DE068 (5E5) 6D

Put it all in a byte array and then 'if then it'



If buf(6)<>"4" then wait_for_command
if buf(6)<>"1" then wait_for_command
If buf(6)<>"7" then wait_for_command
If buf(6)<>"6" then wait_for_command

' Ok so we have a command, now which one

If buf(17)<>"D" then not_arm_command
If buf(18)<>"C" then not_arm_command
If buf(19)<>"D" then not_arm_command

' OK we got here so its 'arm' command



Gosub arm_the_alarm

goto wait_for_commands

not_arm_command: ' so check for 'off' command


If buf(17)<>"5" then not_off_command
If buf(18)<>"E" then not_off_command
If buf(19)<>"5" then not_off_command


Gosub alarm_off

goto wait_for_commands


not_off_command:

' if we got here the command was not understood

gosub error_comand

goto wait_for_commands

[Ziki]

thx flez.....sorry i'm not very familiar with the code you have given ...maybe if possible ..can you send me a code on a simple program ( on a LED when t610 receive sms " ONLED" and off it when recieve "OFFLED" ..thx alot