CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support
16F1507 keep entering INT_RA3

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
edi



Joined: 22 Dec 2003
Posts: 82

View user's profile Send private message

16F1507 keep entering INT_RA3
PostPosted: Thu Feb 14, 2013 12:48 pm     Reply with quote
My circuit is connected to a 7seg and has a TACT switch on RA3.
RA3 should act as wake up from sleep and other press function during operation.
My problem is when I press the TACT after the first sleep the INT_RA3 is entring to an endless loop.
Any idea?
Compiler 4.128 and using PICkit3 for programimg.
Code:

#include <16F1507.h>
#device adc=16

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC_IO                 //Internal RC Osc, no CLKOUT
#FUSES WDT_SW                   //No Watch Dog Timer, enabled in Software
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O

#use delay(int=4000000)

short ON=1;
short OFF=0;
int16 Ton=500;    // 7seg segments on time (function of refresh rate vs. on time)
int8  sensetivity=5;  // number of ADC reads
int16 Sensor_level=3000;  // ADC level threshold ut of 12bit resolution
int8 count=0;
short sleep_mode;

#byte porta=0x0c
#byte trisa=0x8c
#byte portb=0x0d
#byte trisb=0x8d
#byte portc=0x0e
#byte trisc=0x8e

#bit DIGITR = portc.0
#bit DIGITL = porta.2
#bit SEG_A = porta.5
#bit SEG_B = porta.4
#bit SEG_C = portc.5
#bit SEG_D = portc.4
#bit SEG_E = portc.3
#bit SEG_F = portb.7
#bit SEG_G = portb.5
#bit TACT = porta.3

void init()
{
   porta = 0b00001111;   // |     |     | AAA | BBB | TCT | LFT | PGC | SEN |
   trisa = 0b00001001;   // |     |     | OUT | OUT |  IN | OUT | OUT |  IN |
   portb = 0b01011111;   // | FFF |     | GGG |     |     |     |     |     |
   trisb = 0b00000000;   // | OUT | OUT | OUT | OUT | OUT | OUT | OUT | OUT |
   portc = 0b11000111;   // | SDO | SS~ | CCC | DDD | EEE | DOT | LED | RGT |
   trisc = 0b00000000;   // | OUT | OUT | OUT | OUT | OUT | OUT | OUT | OUT |
   PORT_A_PULLUPS(0b00001000); //
}


void debugg()
{
         DIGITR = 0;
         DIGITL = 1;
         SEG_G = ON;
         delay_ms(80);
         SEG_G = OFF;
         delay_ms(200);
         SEG_G = ON;
         delay_ms(80);
         SEG_G = OFF;
         delay_ms(200);
         SEG_G = OFF;
         DIGITL = 1;
         DIGITR = 1;
}

void debugd()
{
         DIGITR = 0;
         DIGITL = 1;
         SEG_D = ON;
         delay_ms(80);
         SEG_D = OFF;
         delay_ms(200);
         SEG_D = ON;
         delay_ms(80);
         SEG_D = OFF;
         delay_ms(200);
         SEG_D = OFF;
         DIGITL = 1;
         DIGITR = 1;
}


void display_bye()
{
   SET_TIMER1(0x4001);
   while (GET_TIMER1() > 0x4000)
   {
      DIGITL = 1;
      DIGITR = 0;
      SEG_B = ON;
      delay_us(Ton);
      SEG_B = OFF;
      SEG_C = ON;
      delay_us(Ton);
      SEG_C = OFF;
      SEG_D = ON;
      delay_us(Ton);
      SEG_D = OFF;
      SEG_F = ON;
      delay_us(Ton);
      SEG_F = OFF;
      SEG_G = ON;
      delay_us(Ton);
      SEG_G = OFF;

      DIGITR = 1;
      DIGITL = 0;
      SEG_C = ON;
      delay_us(Ton);
      SEG_C = OFF;
      SEG_D = ON;
      delay_us(Ton);
      SEG_D = OFF;
      SEG_E = ON;
      delay_us(Ton);
      SEG_E = OFF;
      SEG_F = ON;
      delay_us(Ton);
      SEG_F = OFF;
      SEG_G = ON;
      delay_us(Ton);
      SEG_G = OFF;

   }
}


void Segment (int seg_char)
{
   switch (seg_char)
   {
      case 0:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_E = ON;
         delay_us(Ton);
         SEG_E = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         }
         break;
      case 1:
      {
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         }
         break;
      case 2:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_E = ON;
         delay_us(Ton);
         SEG_E = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 3:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 4:
      {
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 5:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 6:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_E = ON;
         delay_us(Ton);
         SEG_E = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 7:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         }
         break;
      case 8:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_E = ON;
         delay_us(Ton);
         SEG_E = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 9:
      {
         SEG_A = ON;
         delay_us(Ton);
         SEG_A = OFF;
         SEG_B = ON;
         delay_us(Ton);
         SEG_B = OFF;
         SEG_C = ON;
         delay_us(Ton);
         SEG_C = OFF;
         SEG_D = ON;
         delay_us(Ton);
         SEG_D = OFF;
         SEG_F = ON;
         delay_us(Ton);
         SEG_F = OFF;
         SEG_G = ON;
         delay_us(Ton);
         SEG_G = OFF;
         }
         break;
      case 0xa:
      {
         SEG_G = ON;
         delay_us(10);
         SEG_G = OFF;
      }
      break;
      default:
      {
      }
      break;
  }
   
}


void display_7seg (int disp)
{
   unsigned int8 yehidot, asarot;

   SET_TIMER1(0x4001);
   while (GET_TIMER1() > 0x4000)
   {
         DIGITL = 1;
         DIGITR = 0;
         yehidot = disp%10;
         Segment (yehidot);
         DIGITR = 1;
         DIGITL = 0;
         asarot = disp/10;
         Segment (asarot);
   }
}


#INT_RA
void RA3_isr()
{
   int8 onoff_time;
   onoff_time=TACT; // clear the RA3 INT
 debugg(); //just to indicate that interrupt routine is entered
   disable_interrupts(GLOBAL); // all interrupts OFF
   onoff_time=0;
   if ((!TACT) && (!sleep_mode))
   {
      display_7seg(count);
      while (!TACT)
      {
         display_7seg(count);
         onoff_time++;
         if (onoff_time>=6)
         {
            sleep_mode=true;
            return;
         }
      }
   }
   sleep_mode=false;
 debugd(); //just to indicate that interrupt routine is exit
}



void main()
{
   unsigned int8 i;
   unsigned int16 mean=0, blink=0, value;
   disable_interrupts(GLOBAL); // all interrupts OFF
   disable_interrupts(INT_RA); // RA interrupt OFF
//   setup_oscillator(OSC_4MHZ);
   init();
   sleep_mode=true;
   setup_adc_ports(sAN0 || VSS_VDD);
   setup_adc(ADC_CLOCK_INTERNAL);            // Built-in A/D setup function
   set_adc_channel(0);                       // Built-in A/D setup function
   SETUP_TIMER_1(T1_INTERNAL | T1_DIV_BY_8);
   i=porta;       // this is just to clean INT_RA

   CLEAR_INTERRUPT(INT_RA3);
   ENABLE_INTERRUPTS(INT_RA3_H2L);
   enable_interrupts(GLOBAL);
  //   enable_interrupts(PERIPH);

   sleep();

//   display_7seg(33);
   display_7seg(22);
   display_7seg(11);
   display_7seg(0);
   
   while(1)
   {
      if (sleep_mode)
      {
         disable_interrupts(INT_RA3); // RA interrupt OFF
         display_bye();
         display_bye();
//         display_bye();
//         display_bye();
//         display_bye();
//         display_bye();
         count=0;
         CLEAR_INTERRUPT(INT_RA3);
         ENABLE_INTERRUPTS(INT_RA3_H2L);
         sleep();
         display_7seg(33);
         display_7seg(22);
         display_7seg(11);
         display_7seg(0);
      }
      for (i=0; i<sensetivity; i++)
      {
         value = read_adc();                 // Built-in A/D read function
         mean = mean + value;
      }
      mean = mean/i;
      if (mean > Sensor_level)         //This is the mean vlue of the ADC
      {
         count++;
         if (count==100)
            count=99;
         display_7seg(count);
      }
      mean=0;
     
      if (blink == 3800)
      {
      DIGITL = 1;
      DIGITR = 0;
      SEG_G = ON;
      }
      else if (blink==3900)
      {
      DIGITL = 1;
      DIGITR = 0;
      SEG_G = OFF;
      }
      if (blink == 4000)
      {
      DIGITL = 0;
      DIGITR = 1;
      SEG_G = ON;
      }
      else if (blink==4100)
      {
      DIGITL = 0;
      DIGITR = 1;
      SEG_G = OFF;
      blink=0;
      }
      blink++;
     
   }
}
Ttelmah



Joined: 11 Mar 2010
Posts: 19966

View user's profile Send private message

PostPosted: Thu Feb 14, 2013 12:51 pm     Reply with quote
INT_RA3, is an 'interrupt on change' on this chip. These _always_ require that the handler _reads the pin_. Otherwise the interrupt cannot be cleared
As a general comment, the global interrupt flag is already 'off' when you enter an interrupt, and is re-enabled by the hardware when the interrupt exits. You should never disable/enable the global flag inside interrupts.

Best Wishes
edi



Joined: 22 Dec 2003
Posts: 82

View user's profile Send private message

PostPosted: Thu Feb 14, 2013 1:30 pm     Reply with quote
Thanks Ttelmah.
This is the reason I put the line:
Code:

onoff_time=TACT; // clear the RA3 INT

It supposed to read RA3 and clear the interrupt, isn't it?
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

View user's profile Send private message

PostPosted: Thu Feb 14, 2013 2:35 pm     Reply with quote
I only had a quick glance at your code and think it is not easy to follow, but have you considered the possibility that the ISR did end? There is a code path in your ISR where a return is done without calling debugd(), leaving your interrupt debug active.
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group