void NACKEDFUNC
usb_int (void)
{
ISR_STORE();
ISR_ENABLE_NEST();
usb_int_safe();
ISR_DISABLE_NEST();
*AT91C_AIC_EOICR = 0;
ISR_RESTORE();
}
/*
- changed ISR "in" and "out" for gcc
- adapted "ramfunc" to gcc
*/
#include "sys/AT91SAM7S64.h" /* AT91SAMT7S64 definitions */
#include "sys/Board.h"
#include "dvISR/interrupt_utils.h"
#ifdef ERAM /* Fast IRQ functions Run in RAM - see board.h */
#define ATTR RAMFUNC
#else
#define ATTR
#endif
#if 0
// mt: assembler code ported to gcc in interrupt_utils.h
// Keil original:
// Macros for Interrupt Nesting
#define IENABLE /* Nested Interrupts Entry */ \
__asm { MRS LR, SPSR } /* Copy SPSR_irq to LR */ \
__asm { STMFD SP!, {LR} } /* Save SPSR_irq */ \
__asm { MSR CPSR_c, #0x1F } /* Enable IRQ (Sys Mode) */ \
__asm { STMFD SP!, {LR} } /* Save LR */
#define IDISABLE /* Nested Interrupts Exit */ \
__asm { LDMFD SP!, {LR} } /* Restore LR */ \
__asm { MSR CPSR_c, #0x92 } /* Disable IRQ (IRQ Mode) */ \
__asm { LDMFD SP!, {LR} } /* Restore SPSR_irq to LR */ \
__asm { MSR SPSR_cxsf, LR } /* Copy LR to SPSR_irq */
#endif
extern volatile AT91S_PIO * pPIO; /* Global Pointer to PIO */
// void irq0_int (void) __irq __atr { /* IRQ0 (Push button SW2) */
//void INTFUNC ATTR irq0_int (void) { /* IRQ0 (Push button SW2) */
void NACKEDFUNC ATTR irq0_int (void) { /* IRQ0 (Push button SW2) */
ISR_STORE();
ISR_ENABLE_NEST(); /* Enable Interrupt nesting */
if ((pPIO->PIO_PDSR & SW2) == 0) { /* Check if SW2 is pressed */
pPIO->PIO_CODR = LED2; /* Turn On LED2 */
while ((pPIO->PIO_PDSR & SW2) == 0); /* Wait until SW2 is released */
pPIO->PIO_SODR = LED2; /* Turn Off LED2 */
}
ISR_DISABLE_NEST(); /* Disable Interrupt nesting */
*AT91C_AIC_EOICR = 0; /* End of Interrupt */
ISR_RESTORE();
}