ryan.reeve
Joined: 23 Jul 2006
Posts: 20
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| interrupts disabled by compiler |
 Posted: Mon Apr 16, 2007 1:12 am |
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Hi,
I am using compiler 4.013.The only interrupt I am using is #int_rda.
The programs compiles sucessfullly but compiler disables the interrupt and show the warning:
" Interrupt disabled during call to prevent re-entrancy: [@DIV88]"
and line no. it shows, dont even exists in the code.Any ideas ?
| Code: |
#include <lcd.h>
#include <420_lcdd.c>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define SIZE 80
#define COMMA 0x2C
#use rs232(baud=4800, xmit=PIN_C6, rcv=PIN_C7, stream=GPS, errors)
void parse();
void rmc();
void gga();
void rmb();
void show();
unsigned char *pChar,LastComaPos;
unsigned int j,k;
unsigned char inStr[SIZE];
float bearing=0.0;
int alt=0;
float latitude,longitude;
float speed=0.0,heading=0.0;
BYTE next_out = 0;
int index=0;
short int sentence;
#INT_RDA
void GPS_isr()
{
int t;
char char_rcvd;
char_rcvd=fgetc(GPS);
if(char_rcvd=='$')
{
index=0;
sentence=true;
}
if((char_rcvd==10)||(char_rcvd==13))
sentence=false;
if(sentence)
{
inStr[index]=char_rcvd;
t=index;
index=(index+1) % SIZE;
if(index==next_out)
index=t;
}
}
/*#INT_TIMER0
void timer0_int()
{
set_timer0(61); // 61 for 20 msec
}*/
void main()
{
//lcd_init();
//setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
enable_interrupts(GLOBAL);
enable_interrupts(INT_RDA);
//enable_interrupts(INT_TIMER0);
while(TRUE)
{
parse();
show();
}
}
void parse()
{
if(inStr[0] != '$')
printf("No Valid Data\n\r");
// {
// lcd_putc("\f");
// lcd_gotoxy(1,1);
// lcd_putc(" No Data");}
if(inStr[3]=='R' && inStr[4]=='M' && inStr[5]=='C')
{
rmc();
}
else if(inStr[3]=='G' && inStr[4]=='G' && inStr[5]=='A')
{
gga();
}
else if(inStr[3]=='R' && inStr[4]=='M' && inStr[5]=='B')
{
rmb();
}
}
void show()
{ //////////// To Get output on Terminal window uncomment the following ///////////////////
//set_uart_speed(4800);
printf("\n\r%3.6f",Latitude);
printf("\n\r%3.6f",Longitude);
printf("\n\r%3.2f",speed);
printf("\n\r%3.2f",bearing);
printf("\n\r%u",alt);
printf("\n\r%3.2f",heading);
getc();
//////////// To Get output on LCD uncomment the following ///////////////////
/*lcd_putc("\f");
lcd_putc(inStr);
lcd_gotoxy(2,1);
printf(lcd_putc,"V %3.2f ", speed);
lcd_gotoxy(8,1);
printf(lcd_putc, " BRG %3.2f",bearing);
lcd_gotoxy(2,2);
printf(lcd_putc,"\n ALT %3.2f", alt);
lcd_gotoxy(11,2);
printf(lcd_putc," HDG %3.2f", heading);
lcd_gotoxy(2,3);
printf(lcd_putc,"\n LAT. %3.6f" ,Latitude);
lcd_gotoxy(2,4);
printf(lcd_putc,"\n LONG. %3.6f ",Longitude);*/
}
/////////GGA sentences needed to compute Altidute////////
/// found after 9 commas///////
void gga()
{
unsigned int comacount,i=0;
unsigned char altstr[5];
pChar=inStr;
k=0;
comacount=0;
while(comacount<10)
{
if (inStr[i]==COMMA)
{
comacount++;
if (comacount==9)
{
j=i+1;
while(*(pChar+j) !=COMMA)
{
altstr[k]=inStr[j];
j++;
K++;
}
}
}
i++;
}
altstr[k]='\0';
alt=atof(altstr);
//printf("Altitude ");
//puts(altstr);delay_ms(250);
}
/////////RMB sentences needed to compute True Bearing////////
/// found after 11 commas///////
void rmb()
{
unsigned int comacount,i=0;
unsigned char bearstr[5];
pChar=inStr;
k=0;
comacount=0;
while(comacount<12)
{
if (inStr[i]==COMMA)
{
comacount++;
if (comacount==11)
{
j=i+1;
while(*(pChar+j) !=COMMA)
{
bearstr[k]=inStr[j];
j++;
K++;
}
}
}
i++;
}
bearstr[k]='\0';
bearing=atof(bearstr);
//printf("\n Bearing ");
//printf(lcd_putc,"\n\%f",bearing);
}
void rmc()
{
unsigned char latiStr[8];
unsigned char latiCard[1];
unsigned char longiStr[9];
unsigned char longiCard[1];
unsigned char speedStr[6];
unsigned char headingStr[6];
Long latDegrees;
float latMin;
Long longDegrees;
float longMin;
/*Extracht Time*/
pChar=inStr;
j=7;
k=0;
while(*(pChar+j) !=COMMA)
{
//timeStr[k]= *(pChar+j);
j++;
k++;
}
//timeStr[k]='\0';
// Go to Next comma
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
while(*(pChar+j) !=COMMA)
{
j++;
}
/* Extract Latitude*/
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
latiStr[k]=*(pChar+j);
j++;
k++;
}
latiStr[k]='\0';
latitude = atof(latiStr);
//////////*Extract Latitude Cardinal*//////////////
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
latiCard[k]=*(pChar+j);
j++;
k++;
}
latiCard[k]='\0';
latDegrees = (long)(latitude/100);
latMin = (float)(latitude-latDegrees*100);
latMin=latMin/60;
latitude=latDegrees;
latitude+=latMin;
/* Extract Longitude*/
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
longiStr[k]=*(pChar+j);
j++;
k++;
}
longiStr[k]='\0';
/*Extract Longitude Cardinal*/
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
longiCard[k]=*(pChar+j);
j++;
k++;
}
longiCard[k]='\0';
longitude = atof(longiStr);
longDegrees = (Long)(longitude/100);
longMin = (float)(longitude-longDegrees*100);
longMin=longMin/60;
longitude=longDegrees;
longitude+=longMin;
////////////Extract speed///////////
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
speedStr[k]=*(pChar+j);
j++;
k++;
}
speedStr[k]='\0';
speed=atof(speedStr);
////////////Extract Heading////////////////
LastComaPos=j;
pChar=inStr;
j=LastComaPos+1;
k=0;
while(*(pChar+j) !=COMMA)
{
headingStr[k]=*(pChar+j);
j++;
k++;
}
headingStr[k]='\0';
heading=atof(headingStr);
}
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