hello_world.c

   1 /*
   2  * "Hello World" example.
   3  *
   4  * This example prints 'Hello from Nios II' to the STDOUT stream. It runs on
   5  * the Nios II 'standard', 'full_featured', 'fast', and 'low_cost' example
   6  * designs. It runs with or without the MicroC/OS-II RTOS and requires a STDOUT
   7  * device in your system's hardware.
   8  * The memory footprint of this hosted application is ~69 kbytes by default
   9  * using the standard reference design.
  10  *
  11  * For a reduced footprint version of this template, and an explanation of how
  12  * to reduce the memory footprint for a given application, see the
  13  * "small_hello_world" template.
  14  *
  15  */
  16 #include <stdio.h>
  17 #include "sdram_master.h"
  18 #include "system.h"
  19 #include "io.h"
  20
  21 int main()
  22 {
  23     unsigned char i,j;
  24     int temp;
  25     for(i=0;i<100;i++)
  26         IOWR_8DIRECT(SDRAM_U1_BASE,i,i);
  27
  28     IOWR(SDRAM_MASTER_INST_BASE,S_ADDR,SDRAM_U1_BASE);
  29     IOWR(SDRAM_MASTER_INST_BASE,D_ADDR,SDRAM_U2_BASE);
  30     IOWR(SDRAM_MASTER_INST_BASE,LONGTH,100);
  31     IOWR(SDRAM_MASTER_INST_BASE,START_ADDR,1);
  32
  33     temp=IORD(SDRAM_MASTER_INST_BASE,S_ADDR);
  34     printf("S_ADDR:w,r==%d,%d\n",SDRAM_U1_BASE,temp);
  35     temp=IORD(SDRAM_MASTER_INST_BASE,D_ADDR);
  36     printf("D_ADDR:w,r==%d,%d\n",SDRAM_U2_BASE,temp);
  37     temp=IORD(SDRAM_MASTER_INST_BASE,LONGTH);
  38     printf("LONGTH:w,r==%d,%d\n",100,temp);
  39
  40     while(IORD(SDRAM_MASTER_INST_BASE,STATUS_ADDR)!=1){
  41     printf("waiting...!\n");
  42     //break;
  43     };
  44
  45     for(i=0;i<100;i++){
  46         j=IORD_8DIRECT(SDRAM_U1_BASE,i);
  47         printf("SDRAM_U1:i,j == %d, %d\n",i,j);
  48     }
  49     for(i=0;i<100;i++){
  50         j=IORD_8DIRECT(SDRAM_U2_BASE,i);
  51         printf("SDRAM_U2:i,j == %d, %d\n",i,j);
  52     }
  53
  54
  55   printf("Hello from Nios II!\n");
  56
  57   return 0;
  58 }