Re: [lcd4linux] T6963 High CPU Usage....

[juergen <ju...@wi...>]

Hi Michael,

Michael Reinelt schrieb:

> Hi Juergen,
>
> sorry for the delay, I've been on a business journey...
>
no, problem. :-) 

>
>> udelay.c: using gettimeofday() delay loop
>
> not that good. But you are using an old processor without TSC...
>
Intel Celeron, 467MHz

>> drv_generic_parport.c: using raw port 0x378
>
> Again, try to switch to ppdev (but this has nothing to do with your 
> problem)

It's a long way..... I don't know what's wrong with /dev/ppdev!

>
>> T6963: wiring: [DISPLAY:CE]<==>[PARPORT:AUTOFD]
>> T6963: wiring: [DISPLAY:CD]<==>[PARPORT:INIT]
>> T6963: wiring: [DISPLAY:RD]<==>[PARPORT:SELECT]
>> T6963: wiring: [DISPLAY:WR]<==>[PARPORT:STROBE]
>
> Is this ok? Please triple-check your wiring, 98% of all error reports 
> I get come from wrong wirings...
>
The wiring is from LCDproc and i edit the LCD4linux.conf. The Display 
runns with lcdproc too, but with much more CPU-Load an time to display 
somethimg....

>> drv_T6963.c: hang in status1
>> drv_T6963.c: hang in status2
>> drv_T6963.c: bug occured at byte 0 of 320
>
> Here we are: This means that the "busy check" does not work for you. 
> The T6963 requires this busy checking, which means it has to read 
> values back from the parallel port. The message "hang in status.." is 
> emitted when the busy-check does not success after a certain amount of 
> time
>
I think 150ns for Statuscheck. That's the Problem?

> Can you test lcd4linux on this machine?
>
        "I check this! On my Athlon 1800+ / Epoxboard is no Problem, but 
with Windows an LCDHype. The Parallel port on this Board provide 5V."
On this maschine runs lcdproc without any Problems (but on both 
maschines its only 40x12 possible!) With LCDhype working all "pixel". 
But not with Linuxproggys..
At the moment i can't test the Display with lcd4linux on the faster 
maschine. The "old" maschine is in the moment really busy with 
compilling arts, QT and Kdevelop.....
The Parport on the maschine where the Display works, provide 5V too.
I will test the Display on the faster maschine at the weekend.

bye
Jürgen