| |
That looks ok to me. But I'm no expert on LNP.
Here's a clip I use. It looks a lot like what you're using. It seems there may be a problem with your receive code. I'm REAL shaky on that. What does fputs do?
----
char *s;
s = "101";
if (strlen(s)>0) // send message
{
dsound_system(DSOUND_BEEP);
lnp_integrity_write(s,strlen(s));
s = "";
}
----
----- Original Message -----
From: Tom Wouters <aqua@no__spam.ulyssis.org>
Date: Thu, 21 Nov 2002 18:27:52 GMT
To: lugnet.robotics.rcx.legos@lugnet.com
Subject: Re: LNP-problem...
> Steve Hassenplug wrote:
> > Why don't you post the code you're using. Then we can tell you if it's a problem with the program.
>
> ok this is the (relevant) code running on the rcx:
>
>
>
> int main(int argc, char *argv[]) {
> char *p;
> init();
> execi(&PacketWatcher, 0, NULL, PRIO_NORMAL, DEFAULT_STACK_SIZE);
> execi(&Messenger, 0, NULL, PRIO_LOWEST, DEFAULT_STACK_SIZE);
>
> return 0;
> }
>
> int Messenger(int argc, char **argv){
> while(1){
> sleep(10);
> dsound_system(DSOUND_BEEP); //just to make sure we know the while
> executes correctly
> result = lnp_integrity_write("sb", 2);
>
> }
>
> }
>
> -----------------------------------------------
>
> the packetwatcher is just the thread that receives the messages from the
> tower, that one works fine..
>
> the code on the computer is the following:
>
> #include <liblnp.h>
> #include <stdio.h>
> #include <stdlib.h>
>
> void packet_handler(const unsigned char* data, unsigned char length);
>
> /**
> * main functie van het test-programma,
> * dit laat ons toe gewoon strings naar het robotje te sturen
> *
> */
> int main(int argc, char **argv){
> char *buffer, *b2;
> int result,len;
> int leng = 50;
> lnp_init(0,0,0,0, 0);
>
> lnp_integrity_set_handler(&packet_handler); //sets the packet handler
> //lnp_logical_range(1);
>
>
> b2 = malloc(leng+1);
>
> while(1){
> fputs("send::",stdout);
> fgets(b2,leng,stdin);
>
> len = strlen(b2) + 1;
> buffer = malloc(len + 2);
> memcpy(buffer, b2, len);
> result = lnp_integrity_write(buffer,len + 2);
> free(buffer);
> }
> }
>
> void packet_handler(const unsigned char* data, unsigned char length){
> fputs("\nrcv",stdout);
> fputs(data,stdout);
> fputs("\nsend::",stdout);
> }
>
> -----------------------------------------------------------------------
>
> it basically should read commands to send to the rcx from stdin, en put
> replies from the rcx to stdout but there's something wrong with it, if
> the length of the string read from stdin is > 0 it sends the message
> correctly en prompts for the new command, but if you accidently would
> hit enter without anything there it will go crazy...
>
> furthermore, although we can hear the beep of the rcx, lnpd never seems
> to receive a message (not even an erroneous frame or so)
>
> We just don't see where the problem might be...
>
> Tom
--
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Message has 1 Reply:
 | | Re: LNP-problem...
|
| (...) Hi, I'm Pieter and working with Tom on a project. I 've tried you're code but it doesn't work. To me the problem seems to be with lnpd. Here is it's log of the session. 0:Info > created lock file /var/lock/LCK..ttyS0 233:Info > running in (...) (24 years ago, 23-Nov-02, to lugnet.robotics.rcx.legos)
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