litoman
Joined: 04 Nov 2005
Posts: 3
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| Multiple RS232 port |
 Posted: Tue Jan 03, 2006 6:15 am |
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I need two serial port in my proyect but the problem is that when i use #int_RDA the pic hang up.It run into the interrupt routine all time and never go out.It seems like a INT_RDA flag not cleared.Here is my code.What is wrong?.
| Code: |
#include <18F252.h>
#device adc=8
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES HS //High speed Osc (> 4mhz)
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOOSCSEN //Oscillator switching is disabled, main oscillator is source
#FUSES BROWNOUT //Reset when brownout detected
#FUSES BORV45 //Brownout reset at 4.5V
#FUSES PUT //Power Up Timer
#FUSES NOSTVREN //Stack full/underflow will not cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOCPD //No EE protection
#FUSES NOCPB //No Boot Block code protection
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#use delay(clock=20000000)
#use rs232(baud=2400,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=VIEJO)
#use rs232(baud=9600,parity=N,xmit=PIN_C5,rcv=PIN_B0,bits=8,stream=NUEVO)
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Main c
| Code: |
#include "c:\Pic\Interfaz Paneles\18F252\Prueba Puertos\INTERFAZ COMUNICACIONES_V1_5.h"
char caracter,caracter2;
#priority EXT,RDA
#define BUFFER_SIZE 20
BYTE buffer[BUFFER_SIZE];
BYTE next_in = 0;
BYTE next_out = 0;
#int_RDA
RDA_isr()
{
int t;
buffer[next_in]=fgetc(VIEJO);
t=next_in;
next_in=(next_in+1) % BUFFER_SIZE;
if(next_in==next_out)
next_in=t; // Buffer lleno !!
}
#define bkbhit (next_in!=next_out)
BYTE bgetc() {
BYTE c;
while(!bkbhit) ;
c=buffer[next_out];
next_out=(next_out+1) % BUFFER_SIZE;
return(c);
}
#define BUFFER_SIZE2 16
BYTE buffer2[BUFFER_SIZE2];
BYTE next_in2 = 0;
BYTE next_out2 = 0;
/************* INTERRUPCION DEL PUERTO SERIE NUEVO **********************/
#int_EXT
EXT_isr()
{
int t2;
buffer2[next_in2]=fgetc(NUEVO);
t2=next_in2;
next_in2=(next_in2+1) % BUFFER_SIZE2;
if(next_in2==next_out2)
next_in2=t2; // Buffer lleno !!
}
#define bkbhit2 (next_in2!=next_out2)
BYTE bgetc2() {
BYTE c2;
while(!bkbhit2) ;
c2=buffer2[next_out2];
next_out2=(next_out2+1) % BUFFER_SIZE2;
return(c2);
}
void main()
{
setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_OFF);
setup_spi(FALSE);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
ext_int_edge(H_TO_L);
enable_interrupts(INT_RDA);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);
#use fast_io(A)
#use fast_io(B)
#use fast_io(C)
SET_TRIS_A( 0b00111111 );
SET_TRIS_B( 0xFF );
SET_TRIS_C( 0b10011111 );
delay_ms(100);
fprintf(VIEJO,"VIEJO");
fprintf(NUEVO,"NUEVO");
while(1)
{
if(bkbhit)
{
caracter=bgetc();
fprintf(VIEJO,"%c",caracter);
}
if(bkbhit2)
{
caracter2=bgetc2();
fprintf(NUEVO,"%c",caracter2);
}
}
}
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I use 3.235 compiler version |
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