I need help with FBUS protocol

[juliojj14]

I need an example about how to send a hex secuence to read a sms from a nokia phone.
I'm interesting in the protocol because I don't understand what I must send throught the serial port
Thanks

[leg0man]

Hi juliojj14,

search in google for "gnookii" or/and "gammu" (gammu=gnokii2).

Download the source code. In ../docs are the specifications for m2bus, mbus, fbus, etc. and the commands for the different Nokia Handys..( 7110 series, etc.)

ciao

leg0man

[juliojj14]

I read those gnokii documents I'm using that information for my program but in those docs there are any examples for Fbus protocol and I am no sure how use the four last bytes (not the xor checksum, the others) because of that I need and full example of a command to send sms or other but I need that it works.

for example, for send a sms I must send the command:

1e 00 0c 02 00 XX 00 01 02 yy yy yy yy ZZ ZZ SQ CHK1 CHK2

1e=Serial/Fbus

00= DestDev is the mobile phone
0c= ScrDev is the PC
02= Message type: send a sms
00= it's always 00
XX= I don't know what lenght put in this position
00 01 02 is the secuence for send a sms I think, I read this in
the gnoki protocol docs.
yy yy yy... I think that there must go the message but I don't
know how to put it (in ascii changeD to decimal??)
ZZ ZZ I don't know if here I must put the "FramesToGo" byte, but
also I don't know how to use it
SQ I don't know how use it and if always I must use it
chk1 and chk2 is the only thing that I know sure

I have a little mess and I need some help.
If you know any example of a command, please send me or post it.
Thanks

[h_r_f]

From reading about MBus commands in this forum

SQ is sequence number, start at 1 or 2 then increase by 1 for each new command!

Im not sure if its the same for FBus, this post is probably more for my benefit when I get corrected

[slikmik]

yeah just edge it up by one

the checksums different though not as easy as mbus

Mike

[pico]

CRC = 0;
for (i = 0; i < (2 + CMD_LEN); i++)
    CRC ^= frame[i];

count all octets except the CRC

have you tried AT commands? it can be easier if you just want to do phone management etc