How can I use macro outl in nios2 uclinux?

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originally posted by alex824@Apr 27 2006, 01:17 PM

hi :

i want to use macro( outl(data,address)) access pio directly.

so i include <asm/io.h>.but make fail. the erro information is:undefine ref outl.

but the macro outl is included in <asm/io.h>.

i am so puzzle.

how can i solve it? thanks a lot.

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add,# define __KERNEL__

Thanks hippo

I lost the "-" in D__KERNEL__ firster. so I make fail. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

every one:

If you do not want to write driver for some simple device. You can use macro

outl , inl to control the device directly.

frist add "-D__KERNEL__ " to CFLAGS += in your makefile

second copy "nios2_system.h" from ~/linux2.6.x/include to your include dir

follow is my simple code:

# ifndef __LED_H__# define __LED_H__

# include <asm/io.h>

# include "board.h"

// define constants for LED status# define LED_ALL_OFF 0x00# define LED_ALL_ON 0xFF

# define MAJ_LED_OFF (inl(LED_CTRL) & 0xFE)# define MAJ_LED_ON (inl(LED_CTRL) | 0x01)

# define MIN_LED_OFF (inl(LED_CTRL) & 0xFD)# define MIN_LED_ON (inl(LED_CTRL) | 0x02)

# define ACO_LED_OFF (inl(LED_CTRL) & 0xFB)# define ACO_LED_ON (inl(LED_CTRL) | 0x04)

void init_led(void);

# endif

# ifndef __BOARD_H__# define __BOARD_H__

// Main clck frequency.# define MCLK 50000000

// SDRAM area definition.# define SDRAM_BASE 0x01000000# define SDRAM_SIZE 0x01000000 // 16MBytes

//FALSH area definition# define FLASH_BASE 0x00000000# define FLASH_SIZE 0x00800000 // 8MBytes

// led Configuration Registers# define LED_CTRL 0x00810850

# endif

# include "led.h"# include "board.h"

void init_led(void)

{

outl(LED_ALL_ON, LED_CTRL);

}

int main(void)

{

//init_msgQ();

init_led();

while(1)

{

outl(LED_ALL_OFF, LED_CTRL);

outl(MAJ_LED_ON, LED_CTRL);

sleep(1);

outl(MAJ_LED_OFF, LED_CTRL);

sleep(1);

outl(MIN_LED_ON, LED_CTRL);

sleep(1);

outl(MIN_LED_OFF, LED_CTRL);

sleep(1);

outl(ACO_LED_ON, LED_CTRL);

sleep(1);

outl(ACO_LED_OFF, LED_CTRL);

sleep(1);

}

}

Hi,

I use NiosII IDE.

I add "-D__KERNEL__ " to CFLAGS += in my makefile. cope the nios2_system.h to the project.When build the target, the errors like follows:

in inclusion d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/linux/config.h:4[d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/linux/linkage.h] mult line 4 May 7, 2006 8:27:23 PM

linux/autoconf.h: No such file or directory[d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/linux/config.h] mult line 4 May 7, 2006 8:27:23 PM

nios2_system.h: No such file or directory[d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/asm/nios.h] mult line 4 May 7, 2006 8:27:23 PM

in inclusion d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/linux/linkage.h:4:[d:/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.uClibc_1.4.0/include/linux/kernel.h] mult line 11 May 7, 2006 8:27:23 PM

If comment the# includd <asm/io.h>, all the errors like above disappeared .

What is wrong ? Please give me help?Thank you very much!!

hi, zzh

did u copy the include files to your project ?

or specify the whole path http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Copy & Paste does the job, too. You can even use the Altera HAL.

well, it is just an idea...

alex824,

Can you post a simple project on the wiki, or in the forum for us newbies to follow ?

A complete course code with suitable makefile (standalone) would be good.

Thanks.