Posted on June 22, 2006 at 07:56I have got a problem with the interrupt.
I configure the register for an external interrupt on portB pin6 on rising edge.
The interrupt never launch.
Someone have an idea?
/* Example code for ITC for ST72F521 */
#include ''ST7lib_config.h''
//prototype declarations
void EI3_IT_Routine(void);
void main(void);
#ifndef NULL
#define NULL (void *)0
#endif
extern void _Startup(); /* startup routine */
extern void EI3_IT_Routine();
#pragma CONST_SEG .myVectorTable
/* Interrupt vector table, to be linked at the address
0xFFE0 (in ROM) */
volatile void (* const _vectab[])() = {
NULL, /* 0xFFE0 */
NULL, /* 0xFFE2 */
NULL, /* 0xFFE4 */
NULL, /* 0xFFE6 */
NULL, /* 0xFFE8 */
NULL, /* 0xFFEA */
NULL, /* 0xFFEC */
NULL, /* 0xFFEE */
EI3_IT_Routine, /* 0xFFF0 */
NULL, /* 0xFFF2 */
NULL, /* 0xFFF4 */
NULL, /* 0xFFF6 */
NULL, /* 0xFFF8 */
NULL, /* 0xFFFA */
NULL, /* 0xFFFC */
_Startup, /* Reset Vector */
};
#pragma DATA_SEG DEFAULT
void main (void)
{
unsigned char Pin = 6;
ITC_LEVEL Priority = IT_LEVEL_2; /*Variable Declaration*/
ITC_Init (); /* Initialise ITC */
EnableInterrupts /*Reset Interrupt mask*/
// ITC_SetPriority (((unsigned char)IT_TIMERA | ((unsigned char)IT_EI0)),
// IT_LEVEL_2);
/* Sets Interrupt Priority FOR EI0 AS LEVEL 2*/
ITC_SetPriority (IT_EI3, IT_LEVEL_0);
/* Sets Interrupt Priority FOR EI2 AS LEVEL 1*/
// Priority = ITC_GetPriority (IT_EI0); /* Gets Priority */
while (!(ITC_Get_CurrentLevel () == IT_LEVEL_0));
/* Checks Current interrupt priority*/
// ITC_ConfigureInterrupt(IT_PortA,Pin, IT_EDGE_F);
/*Set falling edge sensitivity for EI0*/
ITC_ConfigureInterrupt(IT_PortB,Pin, IT_EDGE_R);
/*Set falling edge sensitivity for EI2*/
// ITC_DisableTLI (); /*Disables TLI interrupt */
// ITC_TLISensitivity (IT_EDGE_R); /* Sets Rising edge for TLI */
// ITC_EnableTLI (); /* Enables TLI interrupt */
PCDDR = 0x08;
PCOR = 0x08;
PCDR = 0x00;
}
/*******************************************************************************
Interrupt Subroutine for EI2
*******************************************************************************/
#ifdef _HIWARE_ /* Test for HIWARE Compiler */
#pragma TRAP_PROC SAVE_REGS /* Additional registers will be saved */
#else
#ifdef _COSMIC_ /* Test for Cosmic Compiler */
@interrupt /* Cosmic interrupt handling */
#else
#error''Unsupported Compiler!'' /* Compiler Defines not found! */
#endif
#endif
void EI3_IT_Routine (void)
{
unsigned int i;
PCDDR = 0x0C;
PCOR = 0x0C;
PCDR = 0x00;
for (i = 0; i < 50000; i++)
{
Nop
}
PCDR &= 0xFd;
}
