tc35 gsm modem related question

[kyoko]

septets bit

Hi, c_man. I had tried to find the source code u mention before but i cant find it can u pls give me the links? Thanks a lot. i hav try to write the program using puts and gets[p] and define char s[xx]="at+cmss=1" and so on do u think i in the right path?

 

[chickyMeal]

tc35 gsm software

hi C-man

i'm just starting the same project... to send sms using pic16f877a...
i have siemens a35 rite now... can i use the at commands provided on the link?

to send the at command, can i simply use hyperterminal and send something like
'AT+CGMI' and the phone will reply something...

what about the baud rate settings?

here is the link on siemens at command that i found..

 

[C-Man]

tc35i modem and microcontroller

sorry I do not know an A35

But you can test if your siemens phone supports SMS by using hyperterminal (19200 baud 8 bits 1 stopbit no parity no handshake) and your cable.

Send "AT+CSCS=?" (without the quotes) to the phone and if you receive OK as answer SMS is supported.

Normally "A" types of siemens phones are "stripped down versions" and do not support SMS.

best regards

 

[chickyMeal]

tc35 gsm -gprs

C-man...

what about siemens 3118@m50?

 

[C-Man]

gsm modem mc35

C-man...

what about siemens 3118(at)m50?

M50 sounds OK but try the AT command I have posted above and you will see if it supports SMS

best regards

 

[chickyMeal]

tc35 to pc 3 wire

Alrite thanx C-Man ..
The thing is i need to decide which phone to buy...
Prev. i got A35 for free since it does not support sms,
i guess i'll just buy the m50...

 

[marwan naboulsi]

at+cmms tc35i

hi c-man
it pleasure to contact a person like you
1-what is an at-command
2-waht is an pdu
3-can i interface a pic mcu using ascyncrounus engine with nokia 6110 cellphone or any nokia phone
thank's for all information
best regard
marwan naboulsi

 

[chickyMeal]

tc35 serial connection

Marwan...

It is possible to interface PIC with nokia cellphone...
U can checkouk this site:

**broken link removed**

it has a lot of info on how to interface with nokia phone

 

[terka]

uart pic16f873 error

Men..

Sonyericsson phones works very well about AT command (hayes), like Siemenes phones.....both works on character mode tranfer data (ascii 8 bit) in rs232 and TTL format ( 5 volts)....

I had using ericsson long time ago...konia haves mbus/fbus protocol....dont use it...

Bye

 

[kyoko]

tc35 or tc35i timeout

hi, terka
i had read that u hav done project using ericsson phone so i have some Q to ask u.
i have build a hardware which consist of pic n max232 n the serial connection work using hyperterminal n i hav test T28 with hyperterminal n i have c the response too but the problem is when i connect pic n T28 it didnt show any response so now i in a trouble coz presentation for the project already near i hope that u can give me some advise n can u pls send me the source code that u use to make the hp send sms using pic? thanks a lot i really need u help!!!!

 

[chickyMeal]

serial interrupt modem

Hi C-Man and any experienced siemens user...

FYI i've got my hp siemens m50...
it responded ok with at+cscs.. thats mean it supports sms rite?
btw.. i try to send sms to this no 0193434045 and it always responds error...
can u help? i tried the simplest 'hi'...

here is my pdu:

0011000B910691434340F50000AA02C824

how do we get the value of mr? here i just use 00..

thanxx a lot!!

 

[C-Man]

siemens a35 19200

Using Pduspy your message is decoded like this:

NO SMSC ADDRESS PRESENT
MESSAGE HEADER FLAGS (0x11)
MESSAGE TYPE : SMS SUBMIT
REJECT DUPLICATES : NO
VALIDITY PERIOD : RELATIVE
REPLY PATH : NOT SET
USER DATA HEADER : NO UDH
REQ. STATUS REPORT : NO
MSG REFERENCE NR. : 0 (0x00)

RECIPIENTS ADDRESS
NUMBER IS : +60193434045
TYPE OF NR. (0x10) : INTERNATIONAL
NPI (0x01) : ISDN/TELEPHONE (E.164/E.163)

PROTOCOL IDENTIFIER (0x00)
MESSAGE ENTITIES : SME-to-SME
PROTOCOL USED : implicit

DATA CODING SCHEME (0x00)
COMPRESSION : OFF
MESSAGE CLASS : NONE
ALPHABET USED : 7bit default

VALIDITY OF MESSAGE : 4 days

USER DATA PART OF SM
USER DATA LENGTH : 2 septets
USER DATA : HI

How do you dend this message to the phone?

19200 baud 8 bit no parity

first send "AT+CMGS="

then the number of septets (i always used 160 but newer siemens phone need the correct number) then wait for the phone to send ">"

Afterwards send your PDU and finally CTRLZ (0x1A).

The phone should reply with "OK"

hope this helps

 

[chickyMeal]

using a phone with tc35 gsm modem

Thx!!

Finally it works! I sent the same PDU complete with the service center number....
The phone responded ERROR the it still send the sms to the destination~
Thats great rite?!~
I'm not sure why it responds with "ERROR" though.... :?:
Oh well....

Thx a lot u guys!

 

[quicksights]

tc35 gsm

hey guys this is a very late reply

but im also making a project/product using tc35i gsm module/engine
im just starting hardware design for my application interface
ill use this posts as reference
but pls assist me on any bumps encountered

 

[tomikan]

tc35 gsm modem project

Hi!

I connect PIC16f873 to simens M35. I use CCS pic compiler. If I use softwear UART the communication betwean PIC and GSM works in both directions. The problem is that the hardware UART dont work. If I use HARDWARE UART microcontroller send commands and telephone receive it, but PIC RX line dont work and dont receive any answear from the phone. If I connect HARDWEAR UART to the PC everything works OK. Whats wrong?

Thanks

 

[tomikan]

gsm to pic sms code in ccs c

Any idea???

 

[gorkin]

tc35 at read sms messages

Well brother, You have a hardware problem between the microcontroller USART and TC35 module UART. Check the conexions and voltage levels. The microcontroller is suplied with the same voltage of the module? The voltage level applied in TC35 inputs are right? Check these levels and read manual for correct levels.

Gorkin.

 

[tomikan]

gsm scheme data coding sms not received

I have 3 wire connection RX, TX and GND. PIC and telefone are powered separate. I think that the voltage level is right otherwise the communication wont work with software uart too.

 

[gorkin]

where can i buy a seimens tc35i gsm modem

Ok, when You conect the module in uart PC port through rs232 transceiver, what pins You use only Tx, Rx and GND?

 

[budhy]

connecting tc 35 gsm module to computer

If I use softwear UART the communication betwean PIC and GSM works in both directions. The problem is that the hardware UART dont work. If I use HARDWARE UART microcontroller send commands and telephone receive it, but PIC RX line dont work and dont receive any answear from the phone.

How about use SoftUART to send command, and use HardUART to receive result?