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In lugnet.robotics.spybotics, John Hansen wrote:
> It is possible if you are really clever to write an
> NQC program which cooperates with the built-in ROM tasks and subroutines.
I spent some time recently working on NQC headers which would enable using more
(if not all) of the Spybot ROM subroutines and tasks with a NQC program. I
haven't done extensive testing of the headers in real programs. I hope there
are still a few Spybot users out there who might be willing to test them a bit
more than I have. There are 4 header files:
SpyGlobals.nqh
SpyInteraction.nqh
SpyBeads.nqh
SpyEvents.nqh
SpyGlobals.nqh includes SpyInteraction.nqh and SpyBeads.nqh. The header files
make use of the NQC preprocessor quite a bit to make sure that global variables
are correctly reserved and defined. The SpyEvents header file also hooks up a
special spybot event initialization routine. You can get these headers at
http://bricxcc.sourceforge.net/spynqh.zip. If you test them please let me know
if you run into any problems.
I also have a port of the Mindscript code for the Task 0 program in ROM to NQC
in the file builtin.nqc. Here it is:
#include "SpyGlobals.nqh"
#include "SpyEvents.nqh"
#define right 0 // output 1
#define left 1 // output 2
#define cAdvance 1
#define cRetreat 2
//int nMode;
#pragma reserve 9
#define nMode (@9)
task main()
{
// initialize our global variable
nMode = cAdvance;
SetPriority(2);
ResetMotors();
ResetEngine();
nStatus |= EVENT_RUNBEADS;
SetAnimation(ANIMATION_SCAN);
repeat(2)
{
PlayTone(2232, 10); Wait(20);
PlayTone(1736, 10); Wait(20);
PlayTone(1202, 10); Wait(35);
PlayTone(1202, 10); Wait(20);
PlayTone(1736, 10); Wait(20);
PlayTone(2232, 10); Wait(35);
}
SetLED(LED_MODE_ON, 0);
ResetMessages();
start MyPostWatcher;
// StartTask(cBuiltInPostWatcher);
start MyBumpWatcher;
// StartTask(cBuiltInBumpWatcher);
while(true)
{
SelectTarget();
if (Target(SPY_RANGE) > RANGE_ANYWHERE)
{
if (nMode == cAdvance)
{
if (Target(SPY_RANGE) == RANGE_THERE)
PlaySound(SOUND_MAGNET);
Advance_Bead(RANGE_HERE, 100);
}
else
{
if (Target(SPY_RANGE) == RANGE_HERE)
PlaySound(SOUND_REPULSE);
Retreat_Bead(RANGE_HERE, 100);
}
}
else
{
BasicMovement_Bead(MOVE_BASIC_SPIN_LEFT, 50);
Fx_Bead(FX_TWITTER, 25);
RandomMovement_Bead(MOVE_RANDOM_FORWARD, 100);
FancyMovement_Bead(MOVE_FANCY_BUG_FORWARD, 1, 100);
Wait(25);
}
}
}
task BumpWatcher()
{
}
task PowerUpTask()
{
int nLevel = EEPROM(EEPROM_USERLEVEL);
SetLED(LED_MODE_YELLOW, 0);
Wait(50);
if (nLevel < 16)
{
nStatus = EVENT_RUNBEADS;
CountDown_Bead(nLevel, COUNT_DIR_UP, 50);
}
ResetMotors();
Wait(100);
}
task MyPostWatcher()
{
while (true)
{
monitor(EVENT_MASK(PostEvent))
{
Wait(32767);
}
catch
{
SetPriority(0);
if ((RxMessageChannel() & MSG_IR) > 0)
{
SetRxMessageLock(MSG_IR);
if (RxMessage(MSG_IR, MSG_COMMAND) == COMMAND_CONTROLLER)
{
nControllerButton = RxMessage(MSG_IR, MSG_HI_BYTE);
nControllerButton *= 256;
nControllerButton |= RxMessage(MSG_IR, MSG_LO_BYTE);
}
switch(nControllerButton)
{
case CONTROLLER_BUTTON1:
PlayTone(3401, 3);
nMode = cAdvance;
break;
case CONTROLLER_BUTTON2:
Fire_Bead(CMD_FIRE_LASER,FIRE_TYPE_THERE_NARROW,-1,0,0,SOUND_FIRE_LASER,50);
break;
case CONTROLLER_BUTTON3:
PlayTone(2801, 3);
nMode = cRetreat;
break;
}
SetRxMessageLock(MSG_NONE);
}
}
}
}
task MyBumpWatcher()
{
while (true)
{
monitor(EVENT_MASK(BumpEvent))
{
Wait(32767);
}
catch
{
SetPriority(1);
PlaySound_Bead(SOUND_OUCH, 0);
BasicMovement_Bead(MOVE_BASIC_BACKWARD, 50);
BasicMovement_Bead(MOVE_BASIC_SPIN_RIGHT, 50);
}
}
}
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In lugnet.robotics.spybotics, Steve Hassenplug wrote:
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On Thu, November 3, 2005 12:14 pm, Joe Strout wrote:
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It occurred to me that one might fit some sort of light sensors on top of
some of the six LEDs on the Spybot’s top side, and use this to select an
input channel to route information from any of a number of sensors to the VLL
sensor.
Has anybody tried this yet? Any thoughts on how well this would work, or
pointers to a suitable multiplexer circuit?
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You can control the VLL output of the spybot, so you should be able to just
connect something much like the programming cable, and get two-way
communications.
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Two-way communications with what? Are you picturing some sort of
microcontroller that monitors all the extra sensors, and reports values to the
Spybot upon request?
That sounds beyond my capabilities, as well as probably not as fast as the
multiplexer approach. With the latter, to read (say) one of sixteen inputs, you
just set the four LEDs to address the desired input, then take a reading from
the VLL.
To communicate with a microcontroller, you’d instead have to send the request,
then wait for a reply, both using a serial protocol. I imagine that for some
applications, polling the sensors as fast as possible would be helpful -- but I
haven’t actually done the math, so maybe this isn’t actually relevant.
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Here’s a good VLL page:
http://www.elecbrick.com/lego/
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Thanks — I’d seen that before, but hadn’t realized its relevance to Spybotics.
Hmm... that suggests all sorts of fun things one might do, like printing VLL
codes onto a transparent wheel which you then spin in front of a light (using a
standard LEGO motor), making a “beacon” that not only advertises its presence
but transmits information (identity or commands) too.
Best,
- Joe
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On Thu, November 3, 2005 12:14 pm, Joe Strout wrote:
> It occurred to me that one might fit some sort of light sensors on top of some
> of the six LEDs on the Spybot's top side, and use this to select an input
> channel to route information from any of a number of sensors to the VLL sensor.
>
> Has anybody tried this yet? Any thoughts on how well this would work, or
> pointers to a suitable multiplexer circuit?
You can control the VLL output of the spybot, so you should be able to just connect
something much like the programming cable, and get two-way communications.
Here's a good VLL page:
http://www.elecbrick.com/lego/
Steve
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It occurred to me that one might fit some sort of light sensors on top of some
of the six LEDs on the Spybot’s top side, and use this to select an input
channel to route information from any of a number of sensors to the VLL sensor.
Has anybody tried this yet? Any thoughts on how well this would work, or
pointers to a suitable multiplexer circuit?
Thanks,
– Joe
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In lugnet.robotics.spybotics, Joe Strout wrote:
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I’ll keep y’all posted on my progress, so if somebody else comes along later
in the same boat, they can learn from my mistakes!
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Well, here’s one: don’t buy a Dynex USB-to-serial adapter. The packaging and
web site both claim it’s Mac compatible, but I tried it on two different
machines (a G4 Powerbook running 10.2.8 and a dual G5 desktop running 10.3.9),
and two different serial apps (MacNQC and an app I wrote myself a while back to
test serial devices), and neither one sees this Dynex gadget as a serial port at
all.
I called Dynex tech support, and they were very nice, but utterly unhelpful.
Their answer amounted to, “It should just work.” Well, it doesn’t.
Everything I read indicates that the Keyspan ‘USA-19HS’ is the right gizmo to
use. It’s a bit hard to find in the stores — I’m going to have to order mine
online — but I bet it will work reliably. More later when I have positive
results.
Best,
– Joe
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