pls help me w/ my program....

[blufips]

Im just a beginer in programing and in making circuits... im currently doing my project... i used PIC16F877A and a GSM benqM23... the problem is the replying of my device... my project are compost of different sensors and when it detect it will send message to the given number and also you can send message to the device and it will reply to you... the sending part is ok but the reply part is not working... when i seperate the program for the reply it works well but when i combined it with the program of my sensor and sending it doesnt work... i dont know the problem if it is my program or my device... some one pls help me... here is my program...

my current program----> the reply part is not working

'************************************************* ***************
'* Name : UNTITLED.BAS *
'* Author : [select VIEW...EDITOR OPTIONS] *
'* Notice : Copyright (c) 2011 [select VIEW...EDITOR OPTIONS] *
'* : All Rights Reserved *
'* Date : 2/28/2011 *
'* Version : 1.0 *
'* Notes : *
'* : *
'************************************************* ***************
DEFINE OSC 4
DEFINE HSER_TXSTA 20h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 9600
DEFINE HSER_CLROERR 1
DEFINE HSER_SPBRG 12
adcon1=7
cmcon=7

trisa=1
trisb=1
trisc=1
trisd=0
trise=1

y1 var byte[2]
y2 var byte[8]

pass1 var bit
pass2 var bit
pass3 var bit

a0 var porta.0
a1 var porta.3
a2 var porta.5
a3 var porte.2

b0 var portb.0
b1 var portb.1
b2 var portb.3
b3 var portb.4
b4 var portb.5
b5 var portb.6
b6 var portb.7

c0 var portc.0
c1 var portc.1
c2 var portc.2

d0 var portd.0
d1 var portd.1
d2 var portd.2
d3 var portd.3
d4 var portd.4
d5 var portd.5
d6 var portd.6
d7 var portd.7

e0 var porte.0
e1 var porte.1

y1[0]="0"
y1[1]="0"

pass1=0
pass2=0
pass3=0

a0=1
a1=1
a2=1
a3=1

b0=1
b1=1
b2=1
b3=1
b4=1
b5=1
b6=1

c0=1
c1=1
c2=1

e0=1
e1=1


portd=%11111111
pause 250
HSerout ["AT+CMGF=1",13]
Pause 500
HSEROUT ["AT+CMGDA=",34,"DEL ALL",34,13]
pause 500
portd=%00000000

main:
while 1

HSerin 5000, main2, [WAIT("SM")]
gosub reply
goto main

main2:

if a0=0 then
y1[0]="1"
y1[1]="6"
y2[0]="C"
y2[1]="R"
y2[2]="I"
y2[3]="T"
y2[4]="I"
y2[5]="C"
y2[6]="A"
y2[7]="L"
portd=%00000001
pause 500
portd=%00000000
pause 500
if pass1=0 then
gosub send1
pass1=1
pass2=0
pass3=0
endif
goto main
endif

if a1=0 then
y1[0]="1"
y1[1]="5"
y2[0]="A"
y2[1]="L"
y2[2]="R"
y2[3]="M"
y2[4]=32
y2[5]=32
y2[6]=32
y2[7]=32
portd=%00000011
pause 500
portd=%00000000
pause 500
if pass2=0 then
gosub send1
pass2=1
pass1=0
pass3=0
endif
goto main
endif

if a2=0 then
y1[0]="1"
y1[1]="4"
y2[0]="A"
y2[1]="L"
y2[2]="E"
y2[3]="R"
y2[4]="T"
y2[5]=32
y2[6]=32
y2[7]=32
portd=%00000111
pause 500
portd=%00000000
pause 500
if pass3=0 then
gosub send1
pass3=1
pass1=0
pass2=0
endif
goto main
endif

IF a3=0 then
y1[0]="1"
y1[1]="3"
goto main
endif

IF b0=0 then
y1[0]="1"
y1[1]="2"
goto main
endif

IF b1=0 then
y1[0]="1"
y1[1]="1"
goto main
endif

IF b2=0 then
y1[0]="1"
y1[1]="0"
goto main
endif

IF b3=0 then
y1[0]="9"
y1[1]=32
goto main
endif

IF b4=0 then
y1[0]="8"
y1[1]=32
goto main
endif

IF b5=0 then
y1[0]="7"
y1[1]=32
goto main
endif

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IF b6=0 then
y1[0]="6"
y1[1]=32
goto main
endif

IF c0=0 then
y1[0]="5"
y1[1]=32
goto main
endif

IF c1=0 then
y1[0]="4"
y1[1]=32
goto main
endif

IF c2=0 then
y1[0]="3"
y1[1]=32
goto main
endif

IF e0=0 then
y1[0]="2"
y1[1]=32
goto main
endif

IF e1=0 then
y1[0]="1"
y1[1]=32
goto main
endif

wend

send1:
portd=%11111111
pause 500
portd=%00000000
pause 500
HSEROUT ["AT+CMGS=",34,"09166494457",34,13]
pause 1000
HSerout [y2[0],y2[1],y2[2],y2[3],y2[4],y2[5],y2[6],y2[7]," Water Level: ",y1[0],y1[1],26]
PAUSE 2000
portd=%01010101
pause 500
portd=%00000000
pause 500
return

reply:
portd=%00001111
pause 500
portd=%00000000
pause 500
HSEROUT ["AT+CMGS=",34,"09166494457",34,13]
portd.6=1
pause 1000
HSerout ["Water Level: ",y1[0],y1[1],26]
portd.5=1
pause 2000
return

my program for replying only----> it works well

'************************************************* ***************
'* Name : UNTITLED.BAS *
'* Author : [select VIEW...EDITOR OPTIONS] *
'* Notice : Copyright (c) 2010 [select VIEW...EDITOR OPTIONS] *
'* : All Rights Reserved *
'* Date : 11/19/2010 *
'* Version : 1.0 *
'* Notes : *
'* : *
'************************************************* ***************
DEFINE OSC 4
DEFINE HSER_TXSTA 20h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 9600
DEFINE HSER_CLROERR 1
DEFINE HSER_SPBRG 12
adcon1=7
cmcon=7
'GSMBUFFER VAR BYTE[16]
'Caller VAR BYTE[13]
'GSMTime VAR BYTE[17]
trisa=%11111111
trisd=%00000000
text var byte[4]
text[0]="1"
text[1]="2"
text[2]="3"
text[3]="4"
portd=%111111111
pause 2000
HSerout ["AT+CMGF=1",13]
Pause 500
HSEROUT ["AT+CMGDA=",34,"DEL ALL",34,13]
PAUSE 3000
main:

WHILE 1
portd=%00000000
portd.0=1
PAUSE 500
portd=%00000011
pause 500
HSERIN 5000, main, [WAIT("SM")]
portd.7=1
pause 1000
HSEROUT ["AT+CMGS=",34,"09166494457",34,13]
portd.6=1
pause 1000
HSerout ["WATER LEVEL: ",text[0],text[1],"m",26]
portd.5=1
pause 2000
HSERIN 2000, main, [WAIT("OK")]
portd=%11111111
PAUSE 2000
HSEROUT ["AT+CMGD=1",13]
HSERIN [WAIT("OK")]
portd=%10101010
PAUSE 400
portd=%00000000
PAUSE 400
WEND

[master_olan]

Hi...may i ask first what's the purpose of the a0...a3 variables?

am I understanding correctly that your program waits for "SM" from the modem for 5 seconds if not goes to main2? then if the modem does reply with "SM" yo go directly to reply...

[blufips]

hellow master_olan... the purpose of the a0...a3 is just to declared it as port.a0...port.a5 and etc... because my input for my sensor is port a,b,c,e...

yes you are right about the purpose of the program it is to waits for "SM" from the modem for 5 seconds if not it goes to main2... then if the modem does reply with "SM" it go directly to reply.

The replying program only is working well... but when i put it in the program of sensors and send it doesnt work... i dont know the problem why is not working... may be the declaration of

DEFINE OSC 4
DEFINE HSER_TXSTA 20h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 9600
DEFINE HSER_CLROERR 1
DEFINE HSER_SPBRG 12
adcon1=7
cmcon=7

i dont know if i declared it right....

[master_olan]

Well I programmed a PIC16f877a to a GSM modem for a friend some months ago... I also had problems with receiving data from Modem to PIC and added a buffer (74LS125)... It worked after that... also try changing this:
DEFINE HSER_TXSTA 20h
to this:
DEFINE HSER_TXSTA 24h
the manual says 24h works with high speed baud rates.. It's what I did with mine...

[blufips]

Hellow master_olan thanks again for your help and reply... sorry for my noob question but where i should put the buffer... sorry im just a beginer in making circuits... it would be a great help if you can post a schematic diagram of your MUC with buffer... and thanks a lot

[master_olan]

Well... just connect GSM Mod. TX to input of buffer then output of buffer to RX of PIC... Just like this...

If that doesn't work i suggest you spy in your system by using the PCs hyperterminal.. That way you will know if the Module or the PIC does respond to the commands...

I hope any of these will help you...

[blufips]

hi master_olan
I Did all the things you said but it did not work... i also check it in pc but still the reply did not work... any suggestion or solution? thank you for your help and effort