Hi:

Did you do a "devs" to see what serial devices exist. If you didn't
get the error from the open, it should be working if /tyCo/0 exists.

I tried it and it does work. I did take over the shell when I spawned
it.

LC

PS:Add a newline to your printf.

devs
drv name
0 /null
1 /tyCo/0
2 /aioPipe
5 bos0ws-lepus:
6 /export/space/export
6 /export/orion/release
6 /export/orion/builds
7 /pty/rlogin.S
8 /pty/rlogin.M
9 /vio
10 /tgtsvr
value = 25 = 0x19
Orion DY4[cpu0]->lkup "test"
routestatShow 0x003ee8b0 text
testNameList 0x004f8924 data
pthread_testcancel 0x00456b14 text
test 0x00332578 text
value = 0 = 0x0
xxx[cpu0]->sp test
task spawned: id = 0xf50efb0, name = t1
value = 256962480 = 0xf50efb0
xxx[cpu0]->hello,world

Do you mean strlen() rather than sizeof()?

Always check the value returned from write. It returns the number of bytes
written.

If it returns ERROR check errno for an error code.

--


Regards,


Graham Baxter
Freelance Software Engineer (VxWorks, Linux and pSOS BSPs)
Graham Baxter (Software) Limited
http://www.gbsw.co.uk
fromnewsgrp@NOSPAMgbsw.co.uk

wrote in message
news:1144666448.113224.144660@j33g2000cwa.googlegr oups.com...
> I'm beginner of Vxworks.I want to know how to access the data through
> serial port.i am using VxWorks 5.5.
>
>
> #include "stdio.h"
> #include "ioLib.h"
> #include "taskLib.h"
> #include "stdio.h"
>
>
> int test()
> {
> int fd;
> char Strbuff[]="hello,world";
>
> fd=open("/tyCo/0",O_RDWR,0);
> if(fd==ERROR)
> {
> printf("Error in open()tty!");
> return 0;
> }
>
> ioctl(fd,FIOSETOPTIONS,OPT_RAW);
> ioctl(fd,FIOBAUDRATE,9600);
> for(;
> {
> write(fd,Strbuff,sizeof(Strbuff));
> taskDelay(60);
> }
> close(fd);
> printf("String has been sent");
> return 0;
>
> }
> the programme above is about communication with serial port,but when I
> make it run,there is not any data appearing in my computer!
> when I check the situation of the running progamme ,it shows like
> below:
>
>
>
> i
> NAME ENTRY TID PRI STATUS PC SP
> ERRNO DELAY
> ---------- ------------ -------- --- ---------- -------- --------
> ------- -----
> tExcTask excTask 3fd3dc0 0 PEND 395063 3fd3d08
> 0 0
> tLogTask logTask 3fd1420 0 PEND 395063 3fd1358
> 0 0
> tWdbTask wdbTask 3f708fc 3 READY 31883b 3f707f0
> 0 0
> t1 funcCallWrap 3f6f6d8 4 DELAY 390b91 3f6f610
> 0 24
> tNetTask netTask 3f930fc 50 READY 3187a1 3f92f50
> 0 0
> value = 0 = 0x0
> -> tw t1
> NAME ENTRY TID STATUS DELAY OBJ_TYPE OBJ_ID
> OBJ_NAME
> ---------- ---------- -------- ---------- ----- ---------- --------
> ------------
> t1 funcCallWr 3f6f6d8 DELAY 11 0
>
> value = 0 = 0x0
> -> ti t1
> NAME ENTRY TID PRI STATUS PC SP
> ERRNO DELAY
> ---------- ------------ -------- --- ---------- -------- --------
> ------- -----
> t1 funcCallWrap 3f6f6d8 4 DELAY 390b91 3f6f610
> 0 13
>
> stack: base 0x3f6f6d8 end 0x3f6a6d8 size 19932 high 992 margin
> 18940
>
> options: 0x1d
> VX_SUPERVISOR_MODE VX_DEALLOC_STACK VX_FP_TASK VX_STDIO
>
> VxWorks Events
> --------------
> Events Pended on : Not Pended
> Received Events : 0x0
> Options : N/A
>
> edi = 0 esi = 3c ebp = 3f6f628 esp =
> 3f6f610
> ebx = 3f6f6d8 edx = 0 ecx = 0 eax =
> 0
> eflags = 246 pc = 390b91
>
>
> I want to know what is wrong?
>

thank you for helping me ,but i still have something not to
understand,what does "funcCallWrap" mean? And,why does it always delay
or pend?