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suraidaa Guest
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issue with INT_RDA |
Posted: Wed May 27, 2009 9:52 am |
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hi,
i want to send some stuff to a pic with a computer, and it was working, until i tried to do it with interrupts
here is my working code
Code: |
#include <16F876A.H>
#fuses HS, NOWDT, NOPROTECT, /*BROWNOUT,*/ PUT, NOLVP
#use delay(clock = 20000000)
#USE RS232(BAUD=9600, XMIT=PIN_c6, RCV=PIN_c7, PARITY= N, bits = 8,errors)
#include <FullCms_Variables.c>
#include <FullCms_LcdDrivers.h>
void main (void)
{
char cara;
int counter=0;
char reception[] = "-reception-";
delay_ms(100);
lcd_init();
lcd_send_stringc(reception,1);
lcd_curseur_pos(1,2);
LCD_curseur_on();
while(1)
{
cara = getc();
lcd_send_car(cara);
counter++;
if(counter ==16)
{
lcd_clear();
lcd_send_stringc(reception,1);
lcd_curseur_pos(1,2);
counter =0;
}
}
}
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and when i add those line :
just before the main
Code: |
#byte RCREG = 0x1A
#INT_RDA
void rda_isr(void)
{
RDA_Flag = 1;
}
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just before the LCD_init();
Code: |
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
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my code isn't working anymore
what did i do wrong?
thanks
ps i'm using CCS V4.057 |
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suraidaa Guest
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Posted: Wed May 27, 2009 10:29 am |
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problem almost solved
i tough that an interrupt was generated each time a data packet was received, but in fact, an interrupt is generated each time the RCREG register is full
since i wasn't reading him inside the interrupt, INT_RDA was ignited each cycle
my new code is :
Code: |
#include <16F876A.H>
#fuses HS, NOWDT, NOPROTECT, /*BROWNOUT,*/ PUT, NOLVP
#use delay(clock = 20000000)
#USE RS232(BAUD=9600, XMIT=PIN_c6, RCV=PIN_c7, PARITY= N, bits = 8)
#include <FullCms_LcdDrivers.h>
int RDA_flag = 0;
char cara;
#byte RCREG = 0x1A
#INT_RDA
void com_isr(void)
{
RDA_Flag = 1;
cara = RCREG;
}
void main (void)
{
char cara;
int counter=0;
char reception[] = "-reception-";
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
delay_ms(100);
lcd_init();
lcd_send_stringc(reception,1);
lcd_curseur_pos(1,2);
LCD_curseur_on();
while(1)
{
if (RDA_Flag == 1)
{
RDA_Flag = 0;
Counter++;
lcd_send_car(cara);
if (counter == 16)
{
counter = 0;
lcd_clear();
lcd_send_stringc(reception,1);
lcd_curseur_pos(1,2);
}
}
}
}
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new issue, cara is containing a weird char insted of what i'm suposed to received |
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suraidaa Guest
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Posted: Wed May 27, 2009 10:58 am |
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problem solved^^
i was re-declaring "cara" inside the main, thus there was 0 inside everytime
even if you didn't help me directly, i found all my awnser inside this wonderfull forum
thanks |
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