wjy.cpp

TMS320C6416利用HPI接口与主机的通信

#include <stdio.h>
#include <stdlib.h>
#include <code.h>
#define C6416_HPI 0x01880000
#define DEGUG 0
#define Emif_globa_control 0x01800000;
#define Emif_CE1_control 0x01880004;
#define Emif_CE0_control 0x01800008;
#define Emif_CE2_control 0x01880010;
#define Emif_CE3_control 0x01880014;
#define SDRAM_control    0x01800012;
#define SDRAM_refresh    0x01800016
void C6x_write_section(int *ptr_hpi,int *source,int dest_add,int length);
void C6x_write_word(int *ptr_hpi,int *source_word,int dest_address);
void init_host(void);
void main(void)
{   
	int *ptr_hpi;
	int i,number_code,number_init;
    ptr_hpi=(int *)C6416_HPI;
    init_host();
    C6x_write_word(ptr_hpi,0x0000377d,Emif_globa_control);
    C6x_write_word(ptr_hpi,0x00000040,Emif_CE1_control);
    C6x_write_word(ptr_hpi,0x00000030,Emif_CE0_control);
    C6x_write_word(ptr_hpi,0x00000030,Emif_CE2_control);
    C6x_write_word(ptr_hpi,0xffffff23,Emif_CE3_control);
    C6x_write_word(ptr_hpi,0x03166000,SDRAM_control);
    C6x_write_word(ptr_hpi,0x00000aaa,SDRAM_refresh);
    number_code=sizeof(code);
    C6x_write_section(ptr_hpi,(int *)&code,0x0,number_code);
    number_init=sizeof(inita)/sizeof(inita[0]);
    C6x_write_section(ptr_hpi,(int *)&inita,0x80000000,number_init);
#if DEGUG
    printf("C6416 boot code loaded\n");
#endif
    ptr_hpi[0]=0x0003;
    ptr_hpi[1]=0x0003;
#if DEBUG
    printf("C6416 is running\n");
#endif
}
void init_host(void)
{*(init *)0x01800004=0x00e20322;
}
void C6x_write_word(int *ptr_hpi,int *source_word,int dest_address);
{ptr_hpi[0]=0x0001;
 ptr_hpi[1]=0x0001;
 ptr_hpi[2]=(int)(dest_address & 0x0ffff);
 ptr_hpi[3]=(int)((dest_address>>16) & 0x0ffff);
 ptr_hpi[6]=(int)(source_word & 0x0ffff);
 ptr_hpi[7]=(int)((source_word>>16) & 0x0ffff);
}
void C6x_write_section(int *ptr_hpi,int *source,int dest_add,int length);
{int i;
 ptr_hpi[0]=0x0001;
 ptr_hpi[1]=0x0001;
 ptr_hpi[2]=(int)(dest_add & 0x0ffff);
 ptr_hpi[3]=(int)((dest_add>>16) & 0x0ffff);
 for(i=0;i<=999;i++)
 {ptr_hpi[4]=(int)*source++;
  ptr_hpi[4]=(int)*source++;
 }
}