AT-MIO-16E-1 with RTLinux....Please help me!!

confirm 553056


I use AT-MIO-16E-1 of NI with RTLinux.

This board works well at User-space : The work is reading data or writing data.

But at kernel-space it does not work.

Test program is below....


---------------------------------------------------------------------
#include <rtl.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/comedi.h>
#include <linux/comedilib.h>

#define BUFSIZE 1024

#define CH0 1
#define CH1 2
#define CH2 3
#define CH3 4

unsigned int dev = 0;
unsigned int subd = 0;

int init_module(void)
{
 unsigned int data[4] = { 0, 0, 0, 0};
 int ret;
 
 printk("-----------------------------\n");
 printk( "Comedi real-time example\n" );
 printk("-----------------------------\n");

 // device open
 ret = comedi_open( dev );
 if( dev != 0 ) printk( "comedi_open error\n" );
 else  printk( "comedi_open success\n" );

 // get board information
 printk( "driver name: %s\n", comedi_get_driver_name(dev) );
 printk( "board name: %s\n", comedi_get_board_name(dev) );
 printk( "number of chnls: %d\n", comedi_get_n_channels(dev,subd) );
 
 // output mode config 
 ret = comedi_dio_config( dev, subd, CH0, COMEDI_OUTPUT );
 comedi_dio_config( dev, subd, CH1, COMEDI_OUTPUT );
 comedi_dio_config( dev, subd, CH2, COMEDI_OUTPUT );
 comedi_dio_config( dev, subd, CH3, COMEDI_OUTPUT );
 if( ret == 0 ) printk( "comedi_config success\n" );
 else  printk( "comedi_config error: (code)%d\n", ret );
 
 // digital write
 ret = comedi_dio_write( dev, subd, CH0, 1 );
 if( ret == 0 ) printk( "comedi_write success\n" );
 else  printk( "comedi_write error: (code)%d\n", ret );
 comedi_dio_write( dev, subd, CH1, 0 );
 comedi_dio_write( dev, subd, CH2, 1 );
 comedi_dio_write( dev, subd, CH3, 0 );

 // input mode config
 ret = comedi_dio_config( dev, subd, CH0, COMEDI_INPUT );
 comedi_dio_config( dev, subd, CH1, COMEDI_INPUT );
 comedi_dio_config( dev, subd, CH3, COMEDI_INPUT );
 comedi_dio_config( dev, subd, CH2, COMEDI_INPUT );
 if( ret == 0 ) printk( "comedi_config success\n" );
 else  printk( "comedi_config error: (code)%d\n", ret );
 
 ret = comedi_dio_read( dev, subd, CH0, data );
 comedi_dio_read( dev, subd, CH1, data+1 );
 comedi_dio_read( dev, subd, CH2, data+2 );
 comedi_dio_read( dev, subd, CH3, data+3 );
 if( ret == 0 ) printk( "comedi_read success: %u%u%u%u\n", data[0], data[1], data[2], data[3] );
 else  printk( "comedi_read error: (code)%d, (data)%u%u%u%u\n", ret, data[0], data[1], data[2], data[3] );
 
 return 0;
}

void cleanup_module(void)
{
 // device close
 comedi_close( dev );
 printk("comedi_closed\n");
}
------------------------------------------------------------------------------

Utill "get board information" success.

However, error occur from next line.

Most of all, "comedi_dio_config", "comedi_dio_read", "comedi_dio_write" are important functions.

these fucntion do not work!!

Maybe I compiled correctly. (Just my opinion)

I used the driveres of 8255, ni_atmio and isatools.

I want to use AT-MIO-16E-1 at kernel-space.

Please show me the way, step by step.....from the start.....!!