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29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \brief Cortex-M3 IRQ management.
35 * \author Andrea Righi <arighi@develer.com>
38 #include <cfg/debug.h>
43 static void (*irq_table[NUM_INTERRUPTS])(void)
44 __attribute__((section("vtable")));
46 static void unhandled_isr(void)
52 void sysirq_setHandler(sysirq_t irq, sysirq_handler_t handler)
56 ASSERT(irq < NUM_INTERRUPTS);
58 IRQ_SAVE_DISABLE(flags);
59 irq_table[irq] = handler;
63 void sysirq_freeHandler(sysirq_t irq)
67 ASSERT(irq < NUM_INTERRUPTS);
69 IRQ_SAVE_DISABLE(flags);
70 irq_table[irq] = unhandled_isr;
74 void sysirq_init(void)
79 IRQ_SAVE_DISABLE(flags);
80 for (i = 0; i < NUM_INTERRUPTS; i++)
81 irq_table[i] = unhandled_isr;
83 /* Update NVIC to point to the new vector table */
84 HWREG(NVIC_VTABLE) = (size_t)irq_table;