Hi,
All,
I had downloaded "rt_com-0.5.4" driver from Source
Forge. But the problem is it's not working correctly.
My system is like this.
1. RTLinux V3.0 [ Installed from RTLinux CD ]
2. Pentium II, 433MHZ.
To successfully compile the rt_com I had made certain
changes into various files as follows.
Please take a look at it.
-----------------------------------------------------------------------
-----------------------------------
1. Makefile.
SYSTEM = RTAI
--> changed to
SYSTEM = RTLINUX_V3
---> added
include ./rtl.mk -->which is autogenerated for
RTLINUX_V3.
-->commented following line.
#CFLAGS += -I/usr/include/rtlinux -O2
2. rt_com.c
---->commented rt_irq.h see below...
#if defined RTAI
# include <rtai.h>
#elif defined RTLINUX_V1
# include <rtl_sync.h>
# include <rt_irq.h>
# include <rt_time.h>
#else
# include <rtl.h>
# include <rtl_core.h>
# include <rtl_sync.h>
# include <rtl_time.h>
//!! THIS FILE IS NOT REQUIRED AS free_RTirq()
replaced by rtl_free_irq() from
//!! init_module() function.
/* # include <arch/rt_irq.h> */
#endif
--->Changed last "used" value to "1" so that I can
use standard "rt_com"
/** Default: mode=0 - DSR needed on TX, no hw flow
control
* used=0 - port and irq setting by
rt_com_set_param. If you
want to work like
* a standard rt_com you can set
used=1. */
struct rt_com_struct rt_com_table[ RT_COM_CNT ] =
{
/* "used" is now "1" */
{ 0, RT_COM_BASE_BAUD, 0x3f8, 4,
RT_COM_STD_COM_FLAG, rt_com0_isr,
0, 1 }, /* ttyS0 - COM1 */
{ 0, RT_COM_BASE_BAUD, 0x2f8, 3,
RT_COM_STD_COM_FLAG, rt_com1_isr,
0, 1 } /* ttyS1 - COM2 */
};
3. rt_comP.h
//!! removed RTLINUX_V2 flag. Otherwise it gives
compilation warning saying
//!! "implicitly difined functions xyz()"
#elif defined RTLINUX_V2
# define rt_com_irq_off( state )
rtl_critical( state )
# define rt_com_irq_on(state)
rtl_end_critical( state )
# define rt_com_request_irq( irq, isr )
rtl_request_global_irq( irq,
isr ); rtl_hard_enable_irq( irq )
# define rt_com_free_irq( irq )
rtl_free_global_irq( irq )
#endif
//!! So now code look like as follows
#else
# define rt_com_irq_off( state )
rtl_critical( state )
# define rt_com_irq_on(state)
rtl_end_critical( state )
# define rt_com_request_irq( irq, isr )
rtl_request_global_irq( irq,
isr ); rtl_hard_enable_irq( irq )
# define rt_com_free_irq( irq )
rtl_free_global_irq( irq )
#endif
-----------------------------------------------------------------------
-----------------------------------
1. Now rt_com is successfully compiled and then I had
disabled "ttyS0"
and "ttyS1" using "setserial" command.
2. "insmod rt_com.o" successfully loaded.
3. Now I had tried to "insmod testcom.o" which doesn't
works..Why??? I
don't know yet...
Curious thing is "rt_com" driver supplied with
RTLINUX_v3 distribution
works perfact with "testcom" example.
But new 0.5.4 driver doesn't work....Has anybody tried
0.5.4 driver on RTLINUX_V3?
So please can you give some ideas...
Regards,
Trilok Soni.
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