what's wrong with my code?compile error

Altera_Forum · ‎03-31-2005

below is my code ,very simple,I compile it in nios IDE,not SDK,but I have created SDK with sopc builder.which header I need ?where can I find it ? In some sample ,I see "include "excalibur.h"",but some tell me this header was used in SDK ,not IDE? DO I need this file?when I put this file ,compile cann't find it too!thank very much! help me !

======================

# include <stdio.h># include "system.h"

int main()

{

na_timer1->np_timerperiodl = (short)(nasys_clock_freq & 0x0000ffff);

na_timer1->np_timerperiodh = (short)((nasys_clock_freq >> 16) & 0x0000ffff); // Set timer running, looping, no interrupts

na_timer1->np_timercontrol = np_timercontrol_start_mask+ np_timercontrol_cont_mask;

return 0;

}

===================

make -s all

Compiling hello_world.c...

../hello_world.c: In function `main':

../hello_world.c:22: error: `na_timer1' undeclared (first use in this function)

../hello_world.c:22: error: (Each undeclared identifier is reported only once

../hello_world.c:22: error: for each function it appears in.)

../hello_world.c:22: error: `nasys_clock_freq' undeclared (first use in this function)

../hello_world.c:24: error: `np_timercontrol_start_mask' undeclared (first use in this function)

../hello_world.c:24: error: `np_timercontrol_cont_mask' undeclared (first use in this function)

make: *** [obj/hello_world.o] Error 1

Build completed

=======================

Altera_Forum · ‎03-31-2005

You are trying to mix the legacy SDK with the HAL (the software environment used by the IDE). This won't work.

The legacy SDK is not recommended for new projects.

I suggest you look at using the macros within components/altera_avalon_timer/inc/altera_avalon_timer_regs.h which is the HAL way to do things.

One more hint - if you are accessing the timer directly then you will need to start from an alt_main project as otherwise the HAL timer code will get in your way.

Altera_Forum · ‎04-01-2005

wombat ,thank you very much!