three.c

此源码是利用altera公司的NIOS II IDE开发的

#include <stdio.h>
#include <unistd.h>
#include "system.h"
#include "sys/alt_irq.h"
#include "altera_avalon_pio_regs.h"
#include "alt_types.h"
#include "altera_avalon_spi_regs.h"
#include "altera_avalon_spi.h"

int main(){
    alt_u32 b[128]={0xc000,0xc070,0xc0e0,0xc150,0xc1c0,0xc230,0xc2a0,0xc310,
    0xc380,0xc3f0,0xc460,0xc4d0,0xc540,0xc5b0,0xc620,0xc690,
    0xc700,0xc770,0xc7e0,0xc850,0xc8c0,0xc930,0xc9a0,0xca10,
    0xca80,0xcaf0,0xcb60,0xcbd0,0xcc40,0xccb0,0xcd20,0xcd90,
    0xce00,0xcd90,0xcD20,0xcCB0,0xcc40,0xcbd0,0xcb60,0xcaf0,
    0xca80,0xca10,0xc9a0,0xc930,0xc8c0,0xc850,0xc7e0,0xc770,
    0xc700,0xc690,0xc620,0xc5b0,0xc540,0xc4d0,0xc460,0xc3f0,
    0xc380,0xc310,0xc2a0,0xc230,0xc1c0,0xc150,0xc0e0,0xc070,
   
    0xc000,0xc070,0xc0e0,0xc150,0xc1c0,0xc230,0xc2a0,0xc310,
    0xc380,0xc3f0,0xc460,0xc4d0,0xc540,0xc5b0,0xc620,0xc690,
    0xc700,0xc770,0xc7e0,0xc850,0xc8c0,0xc930,0xc9a0,0xca10,
    0xca80,0xcaf0,0xcb60,0xcbd0,0xcc40,0xccb0,0xcd20,0xcd90,
    0xce00,0xcd90,0xcD20,0xcCB0,0xcc40,0xcbd0,0xcb60,0xcaf0,
    0xca80,0xca10,0xc9a0,0xc930,0xc8c0,0xc850,0xc7e0,0xc770,
    0xc700,0xc690,0xc620,0xc5b0,0xc540,0xc4d0,0xc460,0xc3f0,
    0xc380,0xc310,0xc2a0,0xc230,0xc1c0,0xc150,0xc0e0,0xc070,
    };
  alt_u32 a[128];
  int i;
  IOWR_ALTERA_AVALON_SPI_SLAVE_SEL(SPI_ADDA_BASE, 3);
  while(1)
  { 
    for(i=0;i<128;i++)
     {
      IOWR_ALTERA_AVALON_SPI_TXDATA(SPI_ADDA_BASE, b[i]);
      IOWR_ALTERA_AVALON_SPI_TXDATA(SPI_ADDA_BASE, a[i]);
      a[i]=IORD_ALTERA_AVALON_SPI_RXDATA(SPI_ADDA_BASE);
      a[i]=(a[i]&0x0ff0)|0x4000;
     IOWR_ALTERA_AVALON_SPI_TXDATA(SPI_ADDA_BASE, a[i]);
    }
  }
}