player/Project/Src/MyApp/irq_vector.c

#include "irq_vector.h"
#include "base.h"
#include "mymem.h"
#include "rthw.h"

extern int isr_vector_start;
extern int isr_vector_end;


static void *g_base=0;
static void **g_irq_vector=0;
//void *g_irq_vector[0x1ac] __attribute__((at(0x20000200)));

void irq_vector_init(void)
{
	int size=(int)&isr_vector_end-(int)&isr_vector_start;
	if(g_irq_vector==0)
	{
		//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0x200<30>ֽڶ<D6BD><DAB6>룬<EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0x200<30>ֽڵ<D6BD><DAB5>ڴ棬Ȼ<E6A3AC><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>0x200<30><30><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD>
		g_base=mymalloc((int)size+0x200);
		g_irq_vector=(void **)(((int)g_base+0x1ff)&0xfffffe00);
		mymemcpy(g_irq_vector,(void *)&isr_vector_start,size);
		rt_base_t level=rt_hw_interrupt_disable();
		NVIC_SetVectorTable(NVIC_VectTab_RAM,(u32)g_irq_vector-NVIC_VectTab_RAM);
		rt_hw_interrupt_enable(level);
	}
}


//<2F><><EFBFBD><EFBFBD><EFBFBD>жϺ<D0B6><CFBA><EFBFBD>,ͬʱ<CDAC><CAB1><EFBFBD>ؾɵ<D8BE><C9B5>жϺ<D0B6><CFBA><EFBFBD><EFBFBD><EFBFBD>irq_fun==0ʱ<30><CAB1><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>
void *irq_vector_set_irq(int irq_num,void *irq_fun)
{
	void *ret=0;
	irq_num+=16;//ǰ16<31><36><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>ں<EFBFBD><DABA>жϣ<D0B6><CFA3>жϺ<D0B6>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
	rt_base_t level=rt_hw_interrupt_disable();
	ret=g_irq_vector[irq_num];
	if(irq_fun)
		g_irq_vector[irq_num]=irq_fun;
	rt_hw_interrupt_enable(level);
	return ret;
}