Subject:
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Re: brickos 090 problem no program download with CONF_LNP_FAST
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 30 Apr 2008 07:39:07 GMT
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Viewed:
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28283 times
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Hello Jochen
At first i was astonished, that somebody is answering
so fast, because in the last 2 years there is not much conversation here.
> You're trying this still with standard hardware and standard dll-src,
I am not completly shure about your question concerning standart HW. I use the
USB Tower and the RCX2.0 for this tests because for the 76 Khz IR-modulation at
the tower and the ir receiver in the rcx.
I use standart sw 090 version.
I activate the CONF_LNP_FAST option in boot/config.h
...
// networking services
//
#define CONF_LNP //!< link networking protocol
#define CONF_LNP_FAST //!< enable 4800 bps LNP
// Can override with compile-time option
#if !defined(CONF_LNP_HOSTADDR)
#define CONF_LNP_HOSTADDR 0 //!< LNP host address
#endif
....
This change the baudrate, parity and bytetimes in include\lnp\sys\lnp-logical.h
....
#ifdef CONF_LNP_FAST
#define LNP_LOGICAL_BAUD_RATE B4800 //!< baud rate
#define LNP_LOGICAL_PARITY SMR_P_NONE //!< parity
#define LNP_BYTE_TIME MSECS_TO_TICKS(3) //!< time to transmit a byte
#else
.....
Intersting is, that for the dll program loader there exists a more or less
eaquel config.h file. Interesting is, that i never have heard something about
that config file on the internet.
util\dll-src\config.h
Here i have made for testing after i hade no sucess for download the program the
same changes.
....
// networking services
//
#define CONF_LNP //!< link networking protocol
//#define CONF_LNP_VIS //!< display LNP activity
#define CONF_LNP_FAST //!< enable 4800 bps LNP
#define CONF_LNP_HOSTADDR 0x8 //!< LNP host address
#define CONF_LNP_HOSTMASK 0xf0 //!< LNP host mask
....
> right? Otherwise, check that you use the right baud-rate and parity
> settings (4800, no parity bit, 1 start, 1 stop bit).
>
> In my experience the IR-communication doesn't work that well,
> especially in 4800 baud mode. It is mainly the PC that does not
> understand the RCX correctly. Try running dll-src with "-v" to get
> more information. Sometimes the PC receives part of the reply but
> there are some broken or missing bytes so the reply is just ignored.
Now i made the tests.
1) download the changed (4800) kernel to the rcx
2) Send a simple hello program to the rcx and get this :
/brickos-0.9.0_pat48/A_test send_hello_usb.sh
Hary Mahesan - LEGO USB IR Tower Mode
opening tty...
KeepAlive Init...
KeepAliveSend: keeping the IR tower alive...
LNP Initialized...
loader hostaddr=0x00 hostmask=0xf0 portmask=0x00
#time 3913531404 try 0: ack:0
try 1: ack:0
try 2: ack:0
try 3: ack:0
try 4: ack:0
error setting IR mode to far
But now i made a crazy try.
1) load down the original kernel (2400) to the rcx.
and tried to send once again the program with the change in
util\dll-src\config.h == set 4800 baud
and
/brickos-0.9.0_pat48/A_test send_hello_usb.sh
Hary Mahesan - LEGO USB IR Tower Mode
opening tty...
KeepAlive Init...
KeepAliveSend: keeping the IR tower alive...
LNP Initialized...
loader hostaddr=0x00 hostmask=0xf0 portmask=0x00
#time 23948733 f1 03 80 00 00 73
deletef1 03 80 00 00 73
create f1 0a 80 00 00 01 be 40 be 7e be 7e f1
data
#time 228000 f1 03 80 00 00 73
SUCCESS
-----------------------------------------------------
Now i made a filediff from
original
C:\cygwin\brickos-0.9.0_pat48\util\dll.exe RENAMED to dll2400.exe
compiled with the config.h option (2400)
//#define CONF_LNP_FAST //!< enable 4800 bps LNP
and the the second compilation option (4800) of dll with
#define CONF_LNP_FAST //!< enable 4800 bps LNP
dll.exe RENAMED to dll4800.exe
There is a difference in the files. I used the Ultraedit for that check.
So i am not shure what it is.
Solutions:
1)Try the old serial tower.
2) Use the hard way : Take a 38 khz IR receiver and check the data with a
osciloscope.
3) try to change the kernel that i can change baudrate/ paritiy in some timings
at runtime of the rcx.
Hard way stop the taskmanagment , change serial parameters and start once again
the whole LNP stuff.
But however there is guarantie that it works.
Maybe there are other option and i am free for all sugestions.
best regard
Bernhard
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