Mail Archives: djgpp/1996/12/24/11:58:58
On Tue, 24 Dec 1996 09:02:26 -0500 kagel AT quasar DOT bloomberg DOT com writes:
>> how do I set a modem to anwser in DJGPP, so that I can dial into it
>> and have it recieve the data?
>>
>
>Try:
> FILE *modem;
> char resp[10];
>
> modem = fopen( "COM1", "rw" ); /* Assuming your modem is at
COM1: */
> fprintf( modem, "ATS0=1\n" ); /* This may be \r rather than
\n. */
> fread( resp, 3, 1, modem );
> if (strncmp( resp, "AT", 2 ) == 0)
> fprintf( stderr, "Modem ready to answer!\n" );
> :::
>
>--
>Art S. Kagel, kagel AT quasar DOT bloomberg DOT com
>
I'm sorry but I lost the original posters e-mail address, so here
goes.....
If you are talking about just normal modem stuff (ie: dialing into a BBS)
then this might be handy:
I grabbed this from the handy HelpPC 2.10 reference for DOS that you can
download from SimTel.
The following is a partial list of the various modem "codes" and the
such. You should be able to copy them into the COM port for them to work
(or you could use a more appropriate method as shown up above... *8-)
*** START ***
HelpPC 2.10 Quick Reference Utility Copyright 1991 David
Jurgens
Hayes Command Set / Register Formats
+++ standard escape sequence (see S2 below)
Comma standard pause character (see S8 below)
AT standard attention sequence
ATA force immediate answer
ATC0 transmitter off
ATC1 transmitter on
ATD dial (ATD number)
ATDP pulse dial (ATDP number)
ATDT tone dial (ATDT number)
ATE0 disable local character echo
ATE1 enable local character echo
ATF0 Half Duplex (modem echoes characters)
ATF1 Full Duplex (modem does not echo characters)
ATH0 force line on hook
ATH1 force line off hook
ATH2 force line special off hook (used for HAM radio)
ATI0 request product code, formatted PPR, PP=prod., R=rev.
ATI1 request ROM check sum
ATL1 speaker volume low (modem specific)
ATL2 speaker volume medium (modem specific)
ATL3 speaker volume high (modem specific)
ATM0 speaker always off
ATM1 speaker on except while carrier present
ATM2 speaker always on
ATM3 speaker on except while dialing and carrier present
ATO force modem into on-line state
ATP sets modem to default pulse dial
ATQ0 modem returns result codes
ATQ1 modem does not return result codes
ATR sets modem to answer mode after dialing out
ATSn where Sn is S register number 'n' (see registers below)
ATT sets modem to default tone dial
ATV0 send numeric codes
ATV1 send word result codes
ATX0 basic result code set "CONNECT", no dial tone detect
ATX1 extended result code set "CONNECT 1200", no dialtone
detect
ATX2 wait for dial tone, extended result codes
ATX3 detect busy signal, extended result codes
ATX4 wait for dial tone, detect busy, extended result codes
ATZ reset to power up condition
Hayes 2400 Compatible Modem Commands
ATB0 CCITT V.22 at 1200 bps
ATB1 BELL 212A at 1200 bps
AT&C DCD always on
AT&C1 DCD on while carrier present
AT&D DTR ignored
AT&D1 DTR fail disconnect enabled
AT&D2 DTR fail disconnect enabled (auto answer off)
AT&D3 DTR fail disconnect enabled (reset modem)
AT&F restore to factory configuration
AT&G no guard tone
AT&G1 550 Hz guard tone
AT&G2 1800 Hz guard tone
AT&J RJ11/RJ41S/RJ45 jack
AT&J2 RJ12/RJ13 jack
AT&L regular phone line
AT&L1 leased line
AT&M async operation
AT&M1 async/sync operation
AT&M2 sync auto dial
AT&M3 sync manual dial
AT&P 39/61 pulse make/break ratio
AT&P1 33/67 pulse make/break ratio
AT&T4 grant RDL test request
AT&T5 deny RDL test request
AT&W write current registers to non-volatile memory
AT&X sync clock internal
AT&X1 sync clock external
AT&X2 sync clock slaved
AT&Z store dial command line
Hayes Compatible Modem Registers
Not all modems support all of these registers and some modems
have
registers other than those listed here. Also note, some are read
only.
to set a register use: AT Sr=## (cr)
to read the register: AT Sr? (cr)
Where "r" is the register and (cr) is a carriage return
The following represent conventions used in the tables below:
() indicates defaults for Smartmodem 1200
** indicates possible inconsistencies across modems
Reg Values Register function
S0 0-255 ring to answer on (0=don't answer)
S1 0-255 ring count (clear after 8 sec) (read only)
S2 0-255 escape char, normally "+", 128-255 disable escape
S3 0-127 end of line character (0x0D/CR)
S4 0-127 line feed character (0x0A/LF)
S5 0-32,127 backspace character (0x08/BS)
S6 2-255 pause before dialing in seconds (2)
S7 1-255 wait for carrier in seconds (30)
S8 0-255 pause for comma in dial string in seconds (2)
S9 1-255 carrier detect response time in 1/10 second (6)
S10 1-255 carrier loss delay in 1/10 second, 255=ignore CD
(7)
S11 50-255 touch tone dial speed, in milliseconds (70)
S12 20-255 escape guard time, in 1/50 second,0=no delay (50)
¦7¦6¦5¦4¦3¦2¦1¦0¦ S13 power up async data format
¦ ¦ ¦ ¦ ¦ ¦ ¦ +---- unused
¦ ¦ ¦ ¦ ¦ ¦ +----- result code, 0=basic, 1=extended
¦ ¦ ¦ ¦ ¦ +------ parity, 0=disabled, 1=enabled
¦ ¦ ¦ ¦ +------- parity, 0=odd ,1=even
¦ ¦ ¦ +-------- data bits, 0=7 bits, 1=8 bits
¦ ¦ +--------- undefined
¦ +---------- buffer ovfw flag, 0=disabled,1=enabled
+----------- 8th bit, 0=space,1=mark (8 bit only)
**** END *****
Please note that I have cut off this list at its half way point. The
rest of the document is setup like the diagram above. If anyone wants
the complete version, feel free to e-mail me privetaly for it.
Hope this helps....
=======================================================================
Bruce Locke
Praxis_Beta AT Juno DOT Com
http://www.nyx.net/~blocke
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