Jan Pazderník wrote:
Hello.I have been working on program based on LDD3 source tiny_tty
driver (http://www.cs.fsu.edu/~baker/devices...tty/tiny_tty.c
<http://www.cs.fsu.edu/%7Ebaker/devices/lxr/http/source/ldd-examples/tty/tiny_tty.c>)
and I have problem with reading from device in user space.
Program works perfectly but when I copy data from driver (equivalent
to tiny_timer with using tty_flip_buffer_push and
tty_insert_flip_string or tty_insert_flip_char )to user space, data
return to buffer in writing function .I can not read data in user
space (cat /dev/ttty0) and I have no idea where the problem is.
thanks
Val
Hi,
tty devices are set in canonical mode by default , that means they wait
for a CR or LF character before returning data to user space.
You can change this behaviour with the following command:
stty -icanon -F /dev/ttty0
regards
Luca
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