dialing out with modem

[mle]

Hello,
I am in the process of converting a PicBasic Pro program to CCS C. The program dials out through an old 2400 bps modem. I can't seem to get the modem to do anything. This is the test program I'm using:

#include "mylcd.h"
#include <string.h>

#use rs232(baud=2400, xmit=PIN_C6, rcv=PIN_C7)

#byte ADCON1 = 0X9F //The adcon1 register

/*----------FUNCTIONS-----------*/

/***************Main Program Starts Here*************/
void main(){

//Variables

char phone[8],line1[25];

/*----------configure all the ports-------*/
Set_Tris_A(0x00); //set port A to outputs
Set_Tris_B(0x33); //make RB5, RB4(BUTTONS),
//RB1 (DQin) and RB0(pulse in) inputs
Set_Tris_C(0x97); //RC7, (Hserin), RC4(RTC),
//RC2, RC1, RC0 inputs
Set_Tris_D(0x00); //set port D to outputs
Set_Tris_E(0x00); //set port E to outputs

/*-----------set PIC registers------------*/
ADCON1=0b00001110;



delay_us(500);
lcd_init();
lcd_clear();

strcpy(line1, "RS232test"); // copy string
lcd_puts(line1);
delay_ms(1000);

printf("ATM1L1\r");
printf("ATDT4333870\r");


while(1);
}

I am getting no response from the modem, except the TX (transmitting) light flashes on and off. Can anyone help?

Thanks,
mle
___________________________
This message was ported from CCS's old forum
Original Post ID: 144515601

[PCM programmer]

:=Hello,
:=I am in the process of converting a PicBasic Pro program to CCS C. The program dials out through an old 2400 bps modem. I can't seem to get the modem to do anything.
----------------------------------------------------

There was a recent thread on how to "wake up" the modem.
<a href="http://www.pic-c.com/forum/general/posts/144515141.html" TARGET="_blank">http://www.pic-c.com/forum/general/posts/144515141.html</a>
___________________________
This message was ported from CCS's old forum
Original Post ID: 144515612

[Doug Evans]

:=Hello,
:=I am in the process of converting a PicBasic Pro program to CCS C. The program dials out through an old 2400 bps modem. I can't seem to get the modem to do anything. This is the test program I'm using:
:=
:=#include "mylcd.h"
:=#include <string.h>
:=
:=#use rs232(baud=2400, xmit=PIN_C6, rcv=PIN_C7)
:=
:=#byte ADCON1 = 0X9F //The adcon1 register
:=
:=/*----------FUNCTIONS-----------*/
:=
:=/***************Main Program Starts Here*************/
:=void main(){
:=
:=//Variables
:=
:=char phone[8],line1[25];
:=
:=/*----------configure all the ports-------*/
:=Set_Tris_A(0x00); //set port A to outputs
:=Set_Tris_B(0x33); //make RB5, RB4(BUTTONS),
:= //RB1 (DQin) and RB0(pulse in) inputs
:=Set_Tris_C(0x97); //RC7, (Hserin), RC4(RTC),
:= //RC2, RC1, RC0 inputs
:=Set_Tris_D(0x00); //set port D to outputs
:=Set_Tris_E(0x00); //set port E to outputs
:=
:=/*-----------set PIC registers------------*/
:=ADCON1=0b00001110;
:=
:=
:=
:=delay_us(500);
:=lcd_init();
:=lcd_clear();
:=
:=strcpy(line1, "RS232test"); // copy string
:=lcd_puts(line1);
:=delay_ms(1000);
:=
:=printf("ATM1L1\r");
:=printf("ATDT4333870\r");
:=
:=
:=while(1);
:=}
:=
:=I am getting no response from the modem, except the TX (transmitting) light flashes on and off. Can anyone help?
:=
:=Thanks,
:=mle

Try putting "\n" in your string. The typical modem requires 0x0d and 0x0a at the end of the string before it will recognize the line as a command. You might also try starting out your command sequence with a reset, then wait 500ms: this is typical "ATZ\n", check your modem docs.

-de
___________________________
This message was ported from CCS's old forum
Original Post ID: 144515627