Hello!
I’m novice in QNX… I installed qnx 6.2 from .iso provided for free in
qnx.com
The problem is the following:
I have a timers PCI card . The card have a external interrupt line,too.
I’m trying to make interrupts working with no success. I’m using
pci_* functions to extract info from the pci configuration space…(ie:
inf.Irq =10)
It yields no problems with ioaddresses and timers configurations. But
when I add interrupt support using interruptwait () the program loops
forever.
Please, let me know what is wrong, or some special qcc options, etc. Or
“link me” to other source of info
thank in advance
Here is the code:
ps: some vars are in globals.h , like inf
#include <stdio.h>
#include <string.h>
#include <sys/neutrino.h>
#include <sys/mman.h>
#include <sys/siginfo.h>
#include <hw/pci.h>
#include <hw/inout.h>
#include <atomic.h>
#include “definic.h”
#include “globales.h”
struct sigevent evento;
//HERE IS THE INT HANDLER
const struct sigevent *isr_func( void *arg, int id )
{
//ENMASCARA INTERRUPCION
InterruptMask( inf.Irq, -1 );
//DO SOMETHING
atomic_add( &ii, 1 );
return (&evento);
}
//MAIN FUNCTION
void main(void)
{
//
int handle = pci_attach(0);
if ( handle == -1 )
{
printf(“Error: pci_attach\n”);
return 0;
}
//INICIALIZA ESTRUCTURA PCI_DEV_INFO
memset( &inf, 0, sizeof( inf ) );
inf.VendorId = VENDOR_ID;
inf.DeviceId = DEVICE_ID;
//BUSCA DEVICE Y LLENA ESTRUCTURA PCI_INFO
void * hdl = pci_attach_device( NULL, PCI_INIT_ALL, 0, &inf );
if ( hdl == NULL )
{
printf( “Error: pci_attach_device\n” );
return 0;
}
//LEE EL ESPACIO DE CONFIGURACION PCI PARA OBTENER LA DIRECCION BASE
int base_addr;
pci_read_config32( inf.BusNumber, inf.DevFunc, 24, 1, &base_addr );
//COPIA VALOR A VARIABLE GLOBAL (Y MATA EL ULTIMO BIT)
Base_Addr = base_addr & 0xFFFE;
//DA ACCESO A LOS PUERTOS I/O
ThreadCtl( _NTO_TCTL_IO, 0 );
//MAP 20 I/O
IOBase = mmap_device_io( 20, Base_Addr );
//CFG TIMER 11 MODE 0
out8( IOBase+15, 0xB0 ); //TIMER CHIP 4, CFG REGISTER
//SETS COUNT
out8( IOBase+14, 0x00 ); //TIMER CHIP 4, TIMER 3
out8( IOBase+14, 0x20 );
//INIC EVENTO
SIGEV_INTR_INIT( &evento );
//ATTACH INTERRUPTION
int idint = InterruptAttach( inf.Irq, isr_func, NULL, 0, 0 ); //I ALSO
FLAG TO PUT ISR AT THE END OF THE ISR CHAIN
if ( idint == -1 )
{
printf( “Error: InterruptAttach\n” );
pci_detach( handle );
return 0;
}
//ENABLE INTERRUPTS IN TIMERS PCI CARD
out8( IOBase+20, 0x01 );
//MAIN LOOP
while ( ii < 100 )
{
//WAIT
InterruptWait( NULL, 0 ); //I ALSO TRIED I_W_(0, NULL)
//DO SOMETHING
printf( “%d\n”, ii );
// SETS A NEW COUNT TIMER
out8( IOBase+14, 0x00 );
out8( IOBase+14, 0xFF );
//UNMASK
// InterruptUnmask( inf.Irq, -1 );
}
//CLOSE APP
InterruptDetach( idint );
pci_detach( handle );
}