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bhyatyab
Joined: 26 Jan 2005
Posts: 13
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| Sending AT Commands via RS232 |
 Posted: Mon Feb 07, 2005 4:10 am |
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Hi
Im am trying to send AT Commands via RS232 to a cell phone. The code below does not seem to work. Can anyone please help me.
Thanks
#include <18F452.h>
#device ICD=TRUE
#device adc=8
#use delay(clock=4000000)
#fuses NOWDT,WDT128,HS, NOPROTECT, NOOSCSEN, BROWNOUT, BORV20, PUT, STVREN, DEBUG, LVP, NOWRT, NOWRTD, NOWRTB, NOWRTC, NOCPD, NOCPB, NOEBTR, NOEBTRB
#use rs232(baud=9600,bits=8,parity=N,xmit=PIN_C6,rcv=PIN_C7)
void main(void){
/* **************************************************************/
/* INITIALISATION SECTION
/*
/* Part of Bootup Sequence. All peripherals
/* are configured and activated.
/*
/* ************************************************************* */
setup_adc_ports(ALL_ANALOG);
setup_adc(ADC_CLOCK_INTERNAL);
setup_psp(PSP_DISABLED);
setup_spi(SPI_MASTER|SPI_L_TO_H|SPI_CLK_DIV_16);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);
setup_timer_2(T2_DIV_BY_16,99,16);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
enable_interrupts(GLOBAL);
{
printf("AT");
printf("0x0d");
printf("AT&K3");
printf("0x0d");
printf("AT+CSQ");
printf("0x0d");
printf("AT+CMGF=1");
printf("0x0d");
puts( "AT+CSCA=\"+27831234567\"");
printf("0x0d");
puts( "AT+CMGS=\"+27841234569\"");
printf("0x0d");
printf("Test");
printf("0x5a");
printf("0x5e");
}
} |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Mon Feb 07, 2005 4:30 am |
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Do you see the expected texts when connecting the PIC to a PC instead of to the phone?
You are not checking the responses sent by the phone. This might be ok for a quick and dirty hack, but at least at a small delay in between sending the commands.
I haven't checked the commands, but it looks to me like you don't need them all. |
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Guest
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| Re: Sending AT Commands via RS232 |
| Posted: Mon Feb 07, 2005 3:58 pm |
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| bhyatyab wrote: | Hi
Im am trying to send AT Commands via RS232 to a cell phone. The code below does not seem to work. Can anyone please help me.
Thanks
#include <18F452.h>
#device ICD=TRUE
#device adc=8
#use delay(clock=4000000)
#fuses NOWDT,WDT128,HS, NOPROTECT, NOOSCSEN, BROWNOUT, BORV20, PUT, STVREN, DEBUG, LVP, NOWRT, NOWRTD, NOWRTB, NOWRTC, NOCPD, NOCPB, NOEBTR, NOEBTRB
#use rs232(baud=9600,bits=8,parity=N,xmit=PIN_C6,rcv=PIN_C7)
void main(void){
/* **************************************************************/
/* INITIALISATION SECTION
/*
/* Part of Bootup Sequence. All peripherals
/* are configured and activated.
/*
/* ************************************************************* */
setup_adc_ports(ALL_ANALOG);
setup_adc(ADC_CLOCK_INTERNAL);
setup_psp(PSP_DISABLED);
setup_spi(SPI_MASTER|SPI_L_TO_H|SPI_CLK_DIV_16);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);
setup_timer_2(T2_DIV_BY_16,99,16);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
enable_interrupts(GLOBAL);
{
printf("AT");
printf("0x0d");
printf("AT&K3");
printf("0x0d");
printf("AT+CSQ");
printf("0x0d");
printf("AT+CMGF=1");
printf("0x0d");
puts( "AT+CSCA=\"+27831234567\"");
printf("0x0d");
puts( "AT+CMGS=\"+27841234569\"");
printf("0x0d");
printf("Test");
printf("0x5a");
printf("0x5e");
}
} |
Either put a delay between commands or wait for a reply.
Also your code
printf("AT");
printf("0x0d");
Try this:
printf("AT\r"); // add the 0X0D in one printf()
delay_ms(3); // 3 milliseonds for OK repay.
next command |
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LouiseG
Joined: 03 Nov 2004
Posts: 17
Location: London...UK!
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| Posted: Mon Feb 07, 2005 4:04 pm |
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Here is a bit if code that i was sending a text message to a radio unit once:
| Code: |
#define button PIN_A4
char c;
#define CR 0x0d //carriage return
#define LF 0x0a //line feed
#define CZ 0X1a //ctrl Z
void main()
{
setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_OFF);
setup_psp(PSP_DISABLED);
setup_spi(FALSE);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
lcd_init();
// when i press the button, sends text message
do
{
if(input(button)==0)
{
printf("AT+CMGS=300154,1,0,152\r");
delay_ms(1000);
printf("82 0C 01 01 4F 54 53 55 20 41 6C 61 72 6D 20 54 65 73 74");
putc(CZ);
//flashes an LED jus to show gone through the above code!
output_high(PIN_B0);
delay_ms(5000);
output_low(PIN_B0);
}
}while(TRUE);
}
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Kada
Joined: 22 Nov 2004
Posts: 4
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| AT Commands |
| Posted: Mon Feb 07, 2005 4:18 pm |
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I have tried this code and it works.
...
...
sendsms() {
byte data;
fprintf(GSM, "AT"); // AT+CMGS="<TLF NR>"<CR><NL>
fputc(CR,GSM);
if (kbhit(GSM)) {
data= fgetc(GSM);
fputc(data,PC);
} // IF
delay_ms(5000);
fprintf(PC,"%s","\r\nSMS will send to the 27206909 \r\n");
fprintf(GSM, "AT+CMGS="); // AT+CMGS="<TLF NR>"<CR><NL>
fputc(0x22,GSM); // "
fprintf(GSM,"27206909"); // AT+CMGS="<TLF NR>"<CR><NL>
fputc(0x22,GSM); // "
fputc(CR,GSM);
fprintf(GSM,"Hello world");
delay_ms(1000);
fputc(0x1A,GSM); // Ctrl-Z
}
_________________
Best Regards Kada |
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densi
Guest
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| Re: Sending AT Commands via RS232 |
| Posted: Mon Feb 07, 2005 8:57 pm |
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| bhyatyab wrote: | Hi
Im am trying to send AT Commands via RS232 to a cell phone. The code below does not seem to work. Can anyone please help me.
Thanks
#include <18F452.h>
#device ICD=TRUE
#device adc=8
#use delay(clock=4000000)
#fuses NOWDT,WDT128,HS, NOPROTECT, NOOSCSEN, BROWNOUT, BORV20, PUT, STVREN, DEBUG, LVP, NOWRT, NOWRTD, NOWRTB, NOWRTC, NOCPD, NOCPB, NOEBTR, NOEBTRB
#use rs232(baud=9600,bits=8,parity=N,xmit=PIN_C6,rcv=PIN_C7)
void main(void){
/* **************************************************************/
/* INITIALISATION SECTION
/*
/* Part of Bootup Sequence. All peripherals
/* are configured and activated.
/*
/* ************************************************************* */
setup_adc_ports(ALL_ANALOG);
setup_adc(ADC_CLOCK_INTERNAL);
setup_psp(PSP_DISABLED);
setup_spi(SPI_MASTER|SPI_L_TO_H|SPI_CLK_DIV_16);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);
setup_timer_2(T2_DIV_BY_16,99,16);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
enable_interrupts(GLOBAL);
{
printf("AT");
printf("0x0d");
printf("AT&K3");
printf("0x0d");
printf("AT+CSQ");
printf("0x0d");
printf("AT+CMGF=1");
printf("0x0d");
puts( "AT+CSCA=\"+27831234567\"");
printf("0x0d");
puts( "AT+CMGS=\"+27841234569\"");
printf("0x0d");
printf("Test");
printf("0x5a");
printf("0x5e");
}
} |
hi
try this in PDU mode....
AT+CMGS=<length of pdu frame><cr> {send this code to phone}
> {response from phone, you must wait for this character, then writte the following to phone...}
<pdu frame content><‘ctrl-z’> { send this data to phone, then phone will send the message built in pdu frame}
for TEXT mode:
AT+CMGS=<da><CR>text is entered
<ctrl-Z>
example:
AT+CMGS="0507751116" ==>string to send to phone
> ==> character received from phone, you mut wait for it, or make a delay_ms(10);
hello there ==> string to send to phone
OK ===> response from phone
Bye |
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