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cindyw
Joined: 21 Oct 2004
Posts: 9
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| Program hang--CCS compiler problem? |
 Posted: Tue Apr 12, 2005 8:01 pm |
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Hi,
Is it possible for the program run to an non-implemented memory area?
In debug mode, I have encounted this problem.
My device with progammed PIC16F684 run very well. But it hangs somewhere in one test and i can not repeat this problem again.
I am using
CCS PCM C Compiler, Version 3.217, 27214
Appreciate any advise
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Posted: Tue Apr 12, 2005 8:21 pm |
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| You will need to post code to get help |
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Guest
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| Posted: Tue Apr 12, 2005 8:48 pm |
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Here is the main program
| Code: |
#include "D684BB.h"
#DEVICE adc=8
#fuses INTRC_IO,NOPROTECT,WDT //NOWDT
#use delay (clock=4000000) //4M hz internal osc
#include "DinitialBB.c"
#include "DcommonBB.c"
/************************************************************
Main program
*************************************************************/
void main()
{ int t1=0;
int t2=0;
int t3=0;
delay_ms(200); // add on 13/4 until stable ??
//----------------ini-----------------
//----WDT initialization---
SETUP_WDT(WDT_DIV_65536);
//----ADC initialization---
SETUP_ADC_PORTS(sAN4|sAN5|sAN6|sAN7|VSS_VDD); setup_adc( ADC_CLOCK_INTERNAL ); //internal 2-6us
SETUP_COMPARATOR(NC_NC_NC_NC);
//----Timer1 initialization---
SETUP_TIMER_1(T1_INTERNAL|T1_DISABLED|T1_DIV_BY_8); //prescale=1:8, internal clock
#asm
bcf 0x03,0x5 //bank0
bcf 0x10,0x0 //tmr1on=0, stops timer1
#endasm
//----Timer0 initialization---
#asm
clrwdt // clr WDT and postscaler
bsf 0x03,0x5 //bank1
movlw 0x06 //'00000110' //prescale=128, internal cloc
movwf 0x81 //save in option_reg
bcf 0x0B,0x5 //disable TIM0 intp
bcf 0x03,0x5 //bank0
#endasm
//----I/O initialization---
// change to asm code due to register not set correctly
#asm
bcf 0x03,0x5 //bank 0
clrf 0x05 //
clrf 0x07 //;Init PORTC
bsf 0x03,0x5 //bank 1
movlw 0x08
movwf 0x85 //set TRISA RA0-2,RA4,5 as output
movlw 0x0f
movwf 0x87 //set TRISC Rc4,5 as output,other as input
#endasm
//init(); // init for ADC, I/O, Timer
//--------------------------------
LED_Blink(3,1,30); // indication of MCU working
//--------check Beam connection-------------------------
set_adc_channel(FBACK);
delay_us(20);
chk: t1=read_adc();
t2=read_receiving(3,10,1);
delay_us(50);
t3=read_receiving(3,20,1);
delay_ms(10);
//based on above reading, find out which beam is connected
if((t1-t2)<(t1-t3))//(abs(t1-t3)-abs(t1-t2))>5)
Beam=2;
else if((t1-t3)<(t1-t2))
Beam=4;
if(t1<10) Beam=0;
if(t1>51&&(abs(t2-t3))<5) //2.5V
Beam=6;
//-----------indication-----------------
if(Beam==0)
{LED_Blink2(2,200);
goto chK;
}
Beam=2; -- for sample only
switch(Beam){
case 2: output_high(LED1);break;
case 4: output_high(LED2);break;
case 6: output_high(LED2);output_high(LED1); break;
};
delay_ms(250);
#asm
bcf 0x03,0x5 //bank0
clrwdt
#endasm delay_ms(250);
#asm
bcf 0x03,0x5 //bank0
clrwdt
#endasm //; clear watch dog
delay_ms(250);
#asm
bcf 0x03,0x5 //bank0
clrwdt
#endasm //; clear watch dog
switch(Beam){
case 2: output_low(LED1);break;
case 4: output_low(LED2);break;
case 6: output_low(LED2);output_low(LED1); break;
}; //to indicate which beam connected
//-------------checking receiving-----------------------
if (bit_test(Beam,1))
ION1=AlignmentCheck(1) ;
if (bit_test(Beam,2))
ION2=AlignmentCheck(2) ;
if(Beam==2)
NoTarget2=60; if(Beam==4)
NoTarget1=60;
/*-----------------------------------------
main detection start
------------------------------------------- */
//----------enable TIM1 & TIM0 intp---------------
#asm
bsf 0x3,0x5 //bank1
bsf 0x8c,0x0// PIE1.0=1 ,enable timer1 intp
bcf 0x3,0x5 //bank0
bcf 0x0c,0x0 // clr overflow flag PIR1.0
bsf 0x10,0x0 //tmr1on=1, starts timer1
// clrf 0x0e //clear TRM1L
//clrf 0x0f //clear TRM1H
bsf 0x0B,0x6// PEIE of INTCON=1, enable peripheral intp
bcf 0x0B,0x2// T0IF of INTCON=1 , clear timer0 overflow flag
clrf 0x01 // clr TMR0
bsf 0x0B,0x5// T0IE of INTCON=1 , enable timer0 intp
bsf 0x0B,0x7// GIE of INTCON=1 , enable global intp
#endasm
//SETUP_WDT(WDT_ON); // Start WDT
//-------------------------------------------
Chk1: if (bit_test(Beam,1)==1)
{ CH=10;
goto process;
}
Chk2: if (bit_test(Beam,2)==1)
CH=20;
process:
if (done==0) //done=1 means (TIM1 intp finish)
goto process;
done=0;
if(NoTarget1>=Counter_Notarget && NoTarget2>=Counter_Notarget&&TCont>13&&rlyOn==1)
{
#asm
bcf 0x3,0x5 //bank 0
bcf 0x5,0x0 #endasm
TCont=0;
rlyOn=0;
}
if(RCont>100)
{
SET_TIMER1(0);
#asm
bcf 0x3,0x5 //bank0
bcf 0x10,0x0 //T1CON-tmr1on=0, stops timer1
#endasm
delay_ms(10);
Read_TRIM();
RCont=0;
#asm //
bcf 0x3,0x5 //bank0
bsf 0x10,0x0 //T1CON-tmr1on=1, starts timer1
#endasm
}
if(CH==10)
goto Chk2;
else
goto Chk1;
}
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Posted: Wed Apr 13, 2005 6:30 am |
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| Well the first thing I look for is to make sure that NOLVP is specified in the fuses. Not all devices have this but I can't tell since you didn't tell us which PIC you are using. |
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Humberto
Joined: 08 Sep 2003
Posts: 1215
Location: Buenos Aires, La Reina del Plata
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| Posted: Wed Apr 13, 2005 7:16 am |
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It is a complex, long and incomplete code that we canīt test. Ovbiously
you come from the assembler arena and your code talk by you, but let
the compiler to do his work, unless you are sure enough of a well know
compiler bug.
You donīt get any advantage toggling the SFR bits by yourself.
Try to post a short code that we can duplicate in bench.
Using goto in C is a non recomended practice, there are nothing
than you canīt do using the C statements.
Humberto |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Wed Apr 13, 2005 10:45 am |
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| Quote: | | you didn't tell us which PIC you are using. |
| Quote: | | My device with progammed PIC16F684 run very well. |
Quickly browsing through the 14-pin 16F684 manual I couldn't find an LVP pin, so very likely his problem is somewhere else.
What I don't like in his code is the manual setting of the bank-register. One of the strong points in the CCS compiler is that the compiler takes care of selecting the banks, even when writing assembly. You just declare a variable and have the compiler figure out a free memory location and select the correct bank when required. Changing the banks manually should be possible without problems, but this is not as well tested as other parts of the compiler. So why make life hard on yourself by incorporating instructions the compiler can insert and optimise for you?
| Quote: | //----I/O initialization---
// change to asm code due to register not set correctly |
I'm not sure what kind of error cindyw is talking about. Probably the compiler would react the way he expects by adding #use FAST_IO |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Apr 13, 2005 11:44 am |
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| Quote: | | What I don't like in his code |
"He" is a she. |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Wed Apr 13, 2005 3:15 pm |
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| PCM programmer wrote: | | Quote: | | What I don't like in his code |
"He" is a she. |
Oops. Thanks for correcting me.  |
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