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「MAX 10 NEEK」へソフトコアCPUを組み込む(ソースコード)(2/3 ページ)
連載「MAX 10 FPGAで学ぶFPGA開発入門」の第9回、「MAX 10 NEEKへソフトコアCPUを組み込む」のソースコードです。
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/*
* "Hello World" example.
*
* This example prints 'Hello from Nios II' to the STDOUT stream. It runs on
* the Nios II 'standard', 'full_featured', 'fast', and 'low_cost' example
* designs. It runs with or without the MicroC/OS-II RTOS and requires a STDOUT
* device in your system's hardware.
* The memory footprint of this hosted application is ~69 kbytes by default
* using the standard reference design.
*
* For a reduced footprint version of this template, and an explanation of how
* to reduce the memory footprint for a given application, see the
* "small_hello_world" template.
*
*/
#include <stdio.h>
#include "system.h"
#include "altera_avalon_pio_regs.h"
int main()
{
printf("Hello from Nios II!\n");
unsigned long cnt = 0;
long delay;
while(1)
{
IOWR_ALTERA_AVALON_PIO_DATA(PIO_0_BASE, cnt&0x01);
for(delay = 0; delay < 1000000; delay++);
cnt++;
}
return 0;
}
endmodule
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