Pic to GSM Phone connection (HSerin problems)

[Russell]

Connection
1.DKU-5 cable connected to the Nokia phone.
2.a male type connector connected to the other end of the DKU-5 cable
3.from that connector I set up the connection to the basic stamp2 as shown above.
4.by the following bs2 code I successfully sent sms
SEROUT 1, 16572,25, [ "AT+CMGF=1" , CR]
SERIN 3, 16572,[ WAIT ( "OK" )]
SEROUT 1,16572,25,["AT+CMGS=",34,"+880191787670",34,CR]
SERIN 3, 16572, [WAIT (">")]
SEROUT 1, 16572, [“hello”,CR]
SEROUT 1, 16572, [26,CR]
SERIN 3, 16572, [WAIT ("OK")]
DEBUG "ok"

MY PROBLEM NOW IS, I MADE SAME CIRCUIT WITH PIC16F84A TO SEND SMS. BUT IT IS NOT WORKING. MY PICBASIC PRO CODE IS OK. I THINK (SURE) I COULD NOT MAKE THE CORRECT CIRCUIT FOR THAT. CAN ANYONE PROVIDE ME THAT.

[Ziki]

hi there....i'm doing some similar project ..i can sucessfully send sms from my gsm phone (t610 SE) now ..i'm having problem with the receiving part ...
below are my code :

DEFINE OSC 4
DEFINE HSER_TXSTA 20h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 4800
DEFINE HSER_CLROERR 1
Caller VAR byte [5]


HSEROUT ["AT" ,13,10]
pause 500

HSEROUT ["AT+CMGF=1" ,13,10]
pause 1000

hserout ["AT+CPMS=",34,"ME",34,13,10]
pause 2000

loop:

HSEROUT ["AT+CMGR=1",13,10]
pause 2000

Hserin 6000,loop,[ wait("REC READ"),STR Caller\5 ]
pause 1000


Hserout ["at+cmgs=" ,34,"my number",34,13,10 ]
pause 2000
hserout [ str Caller,26,13,10]

pause 5000
end

inside my phone memory there's a msg ...i'm juzt trying to send back a sms which is (caller)
is there anything wrong with my code?
thx...

[Ioannis]

Russel:

Maybe if you interchange the tx and rx lines?


Ziki:

Try not to Pause after a Hserout command. Wait for a real answer from the device like the example I gave at http://www.picbasic.co.uk/forum/show...&postcount=198
Also I think raising clock from 4 to 8 ro 16MHz might help.

Ioannis

[Ziki]

hi ...still canot work .. i chnage my code to this ..it canot send sms )

DEFINE OSC 8
DEFINE HSER_TXSTA 24h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 9600
DEFINE HSER_SPBRG 129
DEFINE HSER_CLROERR 1

sms:

HSEROUT ["AT" ,13,10]
hserin 5000,sms,[WAIT("OK")]


HSEROUT ["AT+CMGF=1" ,13,10]
hserin 5000,sms,[WAIT("OK")]


HSEROUT ["AT+CMGS=",34,"my number",34,13,10]
hserin 5000,sms,[WAIT(">")]


HSEROUT ["hello",26,13,10]
pause 5000

end

[Ioannis]

I suppose you did change also the crystal from 4 to 8MHz, not only the Define, right?

Ioannis

[Ziki]

yup...i change my hardware too...

[Ioannis]

Have you set the mobile to TEXT SMS mode prior to use the code you sent as an example?

Also have you disabled the echo of the device (by ATE0)?

Test the same commands with a terminal to compare the results.

More than that I cannot help. Sorry.

Ioannis

[Russell]

i have implemented the given circuit(only the right portion).
i used 8Mhz crystal.
but no result.
can you please help me.

[mister_e]

So i hope you have include the Max232 (icl232) too?

[Ioannis]

As Steve asked, did you used the 232 chip? What do you mean by "only the right portion"?

Ioannis

[Ziki]

hi ...ioannis ..how do i disable the echo?ATEO mean? ..is it necesssary to off it ???
thxxx....

[Ioannis]

Yes. Please do disable the response from the mobile since everything that you type is echoed back so you can see it on the terminal window. But on the microcontrler it is not needed. In fact, it messes with the UART as it is getting characters.

ATE0 (<-- this is zero, NOT letter O) is AT command to disable echo. Not that after a reset, this cames back to normal, so you have to send it again. Say on top of the program.

Ioannis

[Ziki]

ok..thx...
can you have a look at this thread ....
http://www.picbasic.co.uk/forum/showthread.php?t=4425
i use serin since hserin canot work ....
but don't know why ...it can only store the 1st data into the variable -buffer(1)
since the speed is reduced to T300 ...it should be able to catch it right ?
i try using 8Mhz ...also no luck ....
thxx

[Ioannis]

Sorry, cannot help any more. It seems to be something with your mobile. All the schematics is OK. About PDU I have no idea and to be honest, I don't want to get!!!

I always used phones with text ability and in control applications Wavecom and Telit modules.

I think that you have timing problem since the Hserin/Hserout is the best command on the PBP repertore. Of course a string handling needs to be improoved, but that's another thread story.

Ioannis

[brenda]

Hi,
Happy New Year To All!!!!!!


In DLR3-p of Atrox, which is the tx? RB4 or RB5. I'm trying to read the frame via hyperterminal.

Please help,
brenda

[m_vincent]

hi, i have a nokia 3310, another nokia 5110, an ericson T20e, does someone have a schematic to make my own datacable 100% operational and tested plz? (for using with hyperterminal at first time)
tanks a lot

[Ioannis]

Hi. Where I live, a ready made cables (e.g. MobileAction) are way to cheaper than building one. I don't see why you should deal with it...

Ioannis

[m_vincent]

simply to understand how does it work, because next step is to interface it with a pic, so i need to know how are the signal,....

[Josuetas]

Hi, I read it all, so now i shouldnt be punished.

Well, is everyone using the same phones? NavMicro said he had tried 62XX does this mean that a new 6230 phone will work? isnt this an USB telephone? does the same D+ D- pin apply to internal modem RX and TX somehow?

I read thorugh the whole post and there is not one schematic... i mean really? not one? i have conneceted GSM phones to microcontrollers and used FBUS protocol, for that you would at least use a max232 to be able to use Hardware USART at 115200.

This post seems to touch too many subjects! Pic to GSM phone connection should just talk hardware (ie. phone models and basic interconnections), there should be another post for software. From what i read here there are: FBUS, MBUS, Plain Serial, Pc to Pic, PC to phone, Pic to phone connections, AT commands, like 5 kinds of cables, many good and bad lines of code.

Help, i read 6 pages... i am confused... very....

Summary of the 6 pages:
To begin i want to give something, this post doesn´t deals with FBUS, so you will find that it doesnt deal with low profile Nokia phones, this phones can also be controlled but you will have to use FBUS, for that you would have to begin with http://www.embedtronics.com/nokia/fbus.html. The other thing i would recommend is the use of a Hardware USART instead of serin, an interrupt on serial port (only given by an USART) will allow you to control data received, wich seems to be the hardest part to control.
Some Siemmens phones can also be used, i have used c55 and a55 before they are plenty strightforward just connect TXpic to RXphone and viceversa and send some AT,cr string at any speed try several times.
Please use the tested program from NAVMicro of the first page of this post, it works. period.

And why is that i read all this ? ?.... Ah!!! yes, will for example nokia 6230 work??? The cable is USB and this AT modems are serial, how does that work?

[bitmaniac]

Josuetas :
I am using 6210 connecting to a pic (and picbasic pro) with no problem.
In order for the phone to accept /respond to AT commands use the circuit on this excellent site:
http://www.atrox.at/datacable/dlr3/index.html
and read "...Short description of the DLR-3 circuit..." paragraph that explains exactly the way the phone gets into 'AT command mode'.
The circuit is a must if you want 6210 accept AT commands.
I hope this helped you a little. Have a nice day

(P.S: I have built the first schematic that worked just fine, also I think there are cheap ready made DLR-3 vables around 10USD but I have not tested any of them!)

[Ioannis]

I don't think that 6230 was on the market at the time NavMicro refered to 62xx. I think he meant 6210 like phones.

Anyway USB and RS232 are not interchangable! Not the D+ D- relate to Tx and Rx of the RS232 signals!

You have to use a USB converter to RS232 or better use a phone of the older types that had RS232 interface. If want to make a commercial product I suggest one of the modules like Wavecom or Telit. Ericson is out of the modules market now.

Ioannis

[Josuetas]

Well But nokia 6210 isn´t available around here (its way too old) and GSM modules exceed the final cost of my possible product, so they are no good options. What about nokia 3220 it is serial for sure since the cable has an USB-RS232 converter in built and it is available, i haven´t been able to send AT commands to it though. I was able to Send AT commands to the 6230 but i suppose it is made throught the Windows Driver. How .... :| ?.... mmm

I am sure that nokia phones are way to different now than they were on this 6210 models, How is the modem activated now? it can´t be too hard since you can simply open HyperTerminal and send AT (is what i heard, i succeded in 6230)

Thanks for your replies.

[Ioannis]

What do you mean by "how is the modem activated now?"

It is always On! If you call the mobile from another computer with a dialup modem through terminal and have your mobile also connected to a PC with a terminal running, then after the first communication of the modems they are transparent. What you type from one terminal window, appears on the other.

Of course you must have payed for the data service to your mobile provider first!

Ioannis

[Josuetas]

In GSM phones like A55 you can´t use AT modem if you are in HandsFree mode, did you knew that? and from http://www.atrox.at/datacable/dlr3/index.html you have to use some pulldown resistors or the 6210 will not answer correctly (it says so). You cant communicate with FBUS unless you send U like 60 times to sync with the phone.
I have tried several phones from nokia which claim to have Data Modem in built, connected them to HyperTerminal and none works(just the ones with USB in Pop-port), have you ever tried one aside of the old 6210?

What do i mean with "how do you turn it on"? well ... How do you?.

I am looking for someone who actually had connected a new model, like 3220 or..... well i don´t now.... Any model. I personally have done it with Siemmens phones, they do are pretty strightfordward.

[Ioannis]

I have tried 6210, 6310, 6310i, Wavecom Fastrack, Telit and long time ago the Falcon mobile modem. All work simply by connecting them. Plug and Play sort of speak. After you type ati3 they respond with their name!

Ioannis

[pukx]

@bitmaniac, i would like to ask if i'm goin' to build the dlr3 can i use max232C in substitute for max3232? 'coz it's very hard to find those parts here... rgrds, pukx

[bitmaniac]

@pukx
I don't think you will have any problem using C version If I remember right it has to do with the operation temperature rating...

[enesgurler]

hi friends. i am working on a circuit that calls the mobile phone with pic 16f84a. but i couldn't write the exact code can you help me?
thanks

[Ioannis]

What have you written up to this moment? Can we see you project or is it ""TOP SECRET"?

I know the thread has grown exponentially, but have you read the previous posts? There are a lot snippets and I see no reason to look them for you and copy/paste here...

Ioannis

[enesgurler]

What have you written up to this moment? Can we see you project or is it ""TOP SECRET"?

I know the thread has grown exponentially, but have you read the previous posts? There are a lot snippets and I see no reason to look them for you and copy/paste here...

Ioannis

ioannis, you misunderstand me. i don't want all codes about my project, i asked for any help. you may advise look this thread etc... never mind the project isn't top secret it on the link:

www.elektronika.ba

[Ioannis]

Hmm, I think there is a general misunderstanding in this forum.

We cannot help if we don't see any code that you have tried. There are many examples in this thread (try from the page 1 and after) for various PIC.

But we really need your code that is not working and your circuit.

By speculating I think solution cannot be found.

Here's a link for an older post

http://www.picbasic.co.uk/forum/show...&postcount=198

Ioannis

[isaac]

Sorry Guys to bring this nokia 6210 thing up again i know you have all tried to give all the advise that you can, but i am a bit lost here.
I am trying to communicate with a Nokia 6210 with my pic using( Melabs LAB-X1 Experimenter/Lab Board) but i dont get any response from the phone .
i am using the Original Nokia DLR-3 Data Cable that i ordered from Nokia.
the phone works ok when i use the cable with Hypertheminal and i know my Hardware is ok because i can communicate with my pc with my project board
so where do you think the problem lies.

Regards
Isaac

i am trying to run the following program


Define LOADER_USED 1
Include "Modedefs.Bas"
DEFINE OSC 20

DEFINE HSER_RCSTA 90h
DEFINE HSER_TXSTA 20h
DEFINE HSER_BAUD 9600
DEFINE HSER_CLROERR 1
' Define LCD connections
Define LCD_DREG PORTD
Define LCD_DBIT 4
Define LCD_RSREG PORTE
Define LCD_RSBIT 0
Define LCD_EREG PORTE
Define LCD_EBIT 1


' Define program variables
col var byte ' Keypad column
row var byte ' Keypad row
key var byte ' Key value


OPTION_REG.7 = 0 ' Enable PORTB pullups

ADCON1 = 7 ' Make PORTA and PORTE digital
Low PORTE.2 ' LCD R/W low (write)

Pause 100 ' Wait for LCD to start

Lcdout $fe, 1, "Press any key" ' Display sign on message

loop: Gosub getkey ' Get a key from the keypad
Lcdout $fe, 1, #key ' Display ASCII key number
if (key =5) then
gosub sms
endif
Goto loop ' Do it forever


' Subroutine to get a key from keypad
getkey:
Pause 50 ' Debounce

getkeyu:
' Wait for all keys up
PORTB = 0 ' All output pins low
TRISB = $f0 ' Bottom 4 pins out, top 4 pins in
If ((PORTB >> 4) != $f) Then getkeyu ' If any keys down, loop

Pause 50 ' Debounce

getkeyp:
' Wait for keypress
For col = 0 to 3 ' 4 columns in keypad
PORTB = 0 ' All output pins low
TRISB = (dcd col) ^ $ff ' Set one column pin to output
row = PORTB >> 4 ' Read row
If row != $f Then gotkey ' If any keydown, exit
Next col

Goto getkeyp ' No keys down, go look again

gotkey: ' Change row and column to key number 1 - 16
key = (col * 4) + (ncd (row ^ $f))
Return ' Subroutine over

'Send SMS Test-Message
sms:

HSerout ["ATZ",13,10]
Pause 1000

HSerout ["AT+CMGF=1",13,10] 'Set Text Mode
Pause 500

HSerout ["AT+CMGS=",34,"+447895711481",34,",129",13,10]
Pause 500

HSerout ["Test-Message",10,13]
HSerout [26]
Pause 500

RETURN ' return from subroutine

[Ioannis]

.....

'Send SMS Test-Message
sms:

HSerout ["ATZ",13,10]
Pause 1000 <<<<<<<<<<<<<< [1]

HSerout ["AT+CMGF=1",13,10] 'Set Text Mode
Pause 500 <<<<<<<<<<<<<< [2]

HSerout ["AT+CMGS=",34,"+447895711481",34,",129",13,10]
Pause 500 <<<<<<<<<<<<<< [3]

HSerout ["Test-Message",10,13]
HSerout [26]
Pause 500 <<<<<<<<<<<<<< [4]

RETURN ' return from subroutine

General all the above lack the response from the mobile. Every command has a response and that response comes with different timing. Other sooner other later.

So my suggestion is to:

[1]: Wait for the 'OK' response
[2]: Wait for the 'OK' response
[3]: Wait for the '>' response
[4]: Wait for the 'OK' response

Also, have put the phone in TEXT mode or is it in PDU mode?

A monitor on the RS232 lines to see what text is transmitting to both ends would be very helpfull. If your PC has a second Port use it for stealling the signals with two 10K and drive the Rx pin of the second RS232 com port.

Ioannis

[isaac]

Ioannis

Thanks for your quick reply.
i delibrately removed the WAITS as i was debuging the phone because the phone was not sending any response back my program kept looping in sms.
i have only got one serial port on my pc so would be able to experiment as to your suggestion.
Is it true that i just neeed Tx/Rx & Gnd connection?

Here is my original code
Define LOADER_USED 1
Include "Modedefs.Bas"
DEFINE OSC 20

DEFINE HSER_RCSTA 90h
DEFINE HSER_TXSTA 20h
DEFINE HSER_BAUD 9600
DEFINE HSER_CLROERR 1
' Define LCD connections
Define LCD_DREG PORTD
Define LCD_DBIT 4
Define LCD_RSREG PORTE
Define LCD_RSBIT 0
Define LCD_EREG PORTE
Define LCD_EBIT 1


' Define program variables
col var byte ' Keypad column
row var byte ' Keypad row
key var byte ' Key value


OPTION_REG.7 = 0 ' Enable PORTB pullups

ADCON1 = 7 ' Make PORTA and PORTE digital
Low PORTE.2 ' LCD R/W low (write)

Pause 100 ' Wait for LCD to start

Lcdout $fe, 1, "Press any key" ' Display sign on message

loop: Gosub getkey ' Get a key from the keypad
Lcdout $fe, 1, #key ' Display ASCII key number
if (key =5) then
gosub sms
endif
Goto loop ' Do it forever


' Subroutine to get a key from keypad
getkey:
Pause 50 ' Debounce

getkeyu:
' Wait for all keys up
PORTB = 0 ' All output pins low
TRISB = $f0 ' Bottom 4 pins out, top 4 pins in
If ((PORTB >> 4) != $f) Then getkeyu ' If any keys down, loop

Pause 50 ' Debounce

getkeyp:
' Wait for keypress
For col = 0 to 3 ' 4 columns in keypad
PORTB = 0 ' All output pins low
TRISB = (dcd col) ^ $ff ' Set one column pin to output
row = PORTB >> 4 ' Read row
If row != $f Then gotkey ' If any keydown, exit
Next col

Goto getkeyp ' No keys down, go look again

gotkey: ' Change row and column to key number 1 - 16
key = (col * 4) + (ncd (row ^ $f))
Return ' Subroutine over

'Send SMS Test-Message
sms:
HSerout ["ATZ",13,10]
HSERIN 5000, SMS,[WAIT("OK")] ' wait for response ok for 5 seconds
HSerout ["AT+CMGF=1",13,10] 'Set Text Mode
HSERIN 5000, SMS,[WAIT("OK")] ' wait for response ok for 5 seconds
HSerout ["AT+CMGS=",34,"+447895711481",34,",129",13,10]
HSERIN 5000 , SMS, [WAIT(">")]
HSerout ["Test-Message",10,13]
HSerout [26]
Pause 500

RETURN ' return from subroutine

[Ioannis]

You are welcome.

Of course I cannot debug from here, but can suggest to send the commands from terminal program and check what the phone responds.

If all seems OK then check if the PIC communicates OK with the terminal window and you emulate the phone by typing the responses (you have to be quick here...!)

Also check the settings of the DEFINES for the Baud and XTAL you use. I don't remember if these you use are correct.

Ioannis

[isaac]

Just a quick one
Do i need RTS and DTR etc as those are not connected on the LAB-X1 Experimenter board ?

Isaac

[isaac]

Just tried it with RTS/DTR tried to +5v but still no joy
maybe i need to get another nokia cable

Isaac

[Ioannis]

First you do not need to use the RTS or other signal as long as you have low data rate and be able to process the data. I am using the 9600 mobile modem to transfer blocks of 66 bytes without any problem.

Second, have you check if the phone responds as I stated in my previous post?

Have you also checked the responses from your controller (PIC)?

What were the results?

Ioannis

[isaac]

As stated the phone response ok and i can even send & receive sms
but only when its connected to the pc
My Pic also works correctly as i can send and receive via the serial port
via hyperterm
This is strange

[isaac]

I think i would have to make the DLR3-p of Atrox as knowone seems to have used the original nokia data cable to communicate with the pic

Isaac