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#ifndef CORE_IRQ_H__
#define CORE_IRQ_H__
#include <stdint.h>
/*
* Include file for interrupt service routines.
*/
typedef enum {
#define IRQ_RESERVED(n)
#define IRQ(name_, uname, num) \
IRQ_##uname = num,
#include "arch/stm32l4xxx/peripherals//isrs.inc"
#undef IRQ
#undef IRQ_RESERVED
} interrupt_t;
/* Defines a set of interrupts so they may be enabled all at once. */
typedef struct {
uint32_t sysirqs; /* System iterrupts. */
uint32_t irqs[8];
} interrupt_set_t;
inline static void interrupt_set_add(
interrupt_set_t* interrupt_set, interrupt_t interrupt)
{
if (interrupt < 16) {
interrupt_set->sysirqs |= 1 << interrupt;
return;
}
interrupt -= 16;
int loc = interrupt / 32;
int off = interrupt % 32;
interrupt_set->irqs[loc] |= 1 << off;
}
inline static void interrupt_set_remove(
interrupt_set_t* interrupt_set, interrupt_t interrupt)
{
if (interrupt < 16) {
interrupt_set->sysirqs &= ~(1 << interrupt);
return;
}
interrupt -= 16;
int loc = interrupt / 32;
int off = interrupt % 32;
interrupt_set->irqs[loc] &= ~(1 << off);
}
/*
* The interrupt service routines. These link in the function `main` as the
* main function.
*/
extern const void* vectors[];
/*
* Defines an error state. This loops forever and defines a distinct flashing
* pattern to let the user know an unhandled ISR happened.
*/
void unhandled_isr(uint8_t val);
#define enable_interrupt(val) \
{interrupt_set_t itrset = { 0 }; \
interrupt_set_add(&itrset, val); \
enable_interrupts(&itrset);}
#define disable_interrupt(val) \
{interrupt_set_t itrset = { 0 }; \
interrupt_set_add(&itrset, val); \
disable_interrupts(&itrset);}
/*
* Enables the provided interrupt. Note that if the interrupt is one of the
* system interrupts (first 16) this function has no effect because those
* interrupts are always enabled.
*/
void enable_interrupts(interrupt_set_t* interrupts);
/*
* Enables the provided interrupt
*/
void disable_interrupts(interrupt_set_t* interrupts);
#endif /* CORE_IRQ_H_ */
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