process hung problem + self reset

[eng.alamin]

hello am using pic16f819

my problem is i use DTMFOUT function inside (for) loop this causes some times process hung after almost 9 or 10 min working time
is there any why to make pic self reset if it hung



regards

[mister_e]

Can you post your code and schematic?

About your other process... any of those use interrupts?

[eng.alamin]

hello no (interrupts)
this is my code
no schematic release yet still prototypal
but u can figer it out from code

pin b.0 is serail in
pin a.3 is audio out

 define osc 20
   Include "modedefs.bas"
 
 TRISA = %00000000
  gdata var byte[21]

  x var byte 
  ok var bit
 main:
 x = 0
 
    gps:
        if ok == 0 then 
  serin2 portb.0 , 188 ,[wait("GPS") , str gdata\20]
         toggle portb.1
     dtmfout porta.3 ,100 ,100,[ 10 , 0 , 10 ]
             
             
     for x = 0 to 20
                   pause 10
                 if  gdata[x] = "." then
                    gdata[x] = 12
                    endif
                      dtmfout porta.3 ,100,100,[ gdata[x]  ]  
                       
  next x  
    ok = 1
    endif
  
   serin2 portb.0 , 188 ,[wait("SD") , str gdata\4]
   ok = 0
        toggle portb.2
     dtmfout porta.3 ,100,100,[ 10 , 1 , 10 ]
             pause 1
           
     for x = 0 to 4
                     pause 10
                 if  gdata[x] = "." then
                    gdata[x] = 12
                    endif
                    dtmfout porta.3 ,100,100,[ gdata[x]  ]  
                       
  next x      
  pause 50           
 goto main

[mackrackit]

Are you positive it is not hung waiting on a serial input?

[eng.alamin]

Are you positive it is not hung waiting on a serial input?

i am positive
hung appear on audio (tone become wierd) and leds stop toggling

[skimask]

 define osc 20

Don't know if it's a cut/paste problem or what...
Read the manual and what it specifically says about DEFINE's... And ENDing a program (or STOPping it)

As far as an 'automatic reset', look in the datasheet under WATCHDOG.

[eng.alamin]

 define osc 20

Don't know if it's a cut/paste problem or what...
Read the manual and what it specifically says about DEFINE's... And ENDing a program (or STOPping it)



As far as an 'automatic reset', look in the datasheet under WATCHDOG.

[skimask]

Ok, but that so-called code you posted has 3 definitive problems in it.
You get to figure them out now...Okzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

[Archangel]

 define osc 20

Don't know if it's a cut/paste problem or what...
Read the manual and what it specifically says about DEFINE's... And ENDing a program (or STOPping it)

As far as an 'automatic reset', look in the datasheet under WATCHDOG.

I don't want t o be pushy, <b>but </b>did you fix these things? Which is to say, Did you put your DEFINES IN UPPERCASE? Did you put END at your programs END?

Wait until you see me in my 'Officer Jim Dangle' costume this weekend...

I think I would rather not WOO that would be Scary

[mackrackit]

I am wondering if it is not a power supply problem. After a few minutes the the PS starts to fail/drop voltage.

Is the speaker direct connect to the PIC?