 | | NXC Counters
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From the NXC Guide: ---...--- TachoCount: Return the internal position counter value for the specified output. BlockTachoCount: Return the block-relative position counter value for the specified port. RotationCount: Return the program-relative (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Hmm, this is interesting. The capabilities that aren't used by the current firmware are very curious. I can see the purpose of multiple sprites and draw modes though. With that, you could do masked graphics. A mask sprite would be drawn first (...) (18 years ago, 22-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Thanks John. I find it a problem that NXTasy posts are not signed - I didn't know you were the author... Philo (18 years ago, 22-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Unfortunately, I made several factual errors in my post on NXTasy the other day. I have attempted to correct those errors today by editing the existing post. Please make sure you read it again if you read it yesterday or earlier this morning. (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) Yikes - I had no idea it was that convoluted! I want to put on some new graphics functions but I think I'll devise my own file format for those. I'll see if it's possible to hijack DrawGraphic to test it at least, but supporting new opcodes (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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(...) These variables do get used by the existing RIC format. I could tell you what they mean but then I'd have to kill you. :-) It definitely is not a good idea to try to use them for something completely different. It seems better to just add a (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Extending the firmware through DrawGraphic()
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Hello Jason, (...) There was a paper about RIC on NXTasy a few days ago: (URL) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Extending the firmware through DrawGraphic()
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Having made an earlier suggestion about using file names to extend the capabilities, I've looked into it a little further and found something very useful. The 'NXTDrawPicture', or 'DrawGraphic' command can take an arbitrary array of variables. The (...) (18 years ago, 21-Feb-07, to lugnet.robotics.nxt)
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| | Re: Improving the firmware?
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(...) It's a good plan, but I don't think that's the right command. If someone was calculating the position of a line to draw it may well start or end off-screen in the negative values. How about hijacking the FileOpen command, and apply URL-type (...) (18 years ago, 20-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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David Wallace wrote: > occam ... I was wondering where I had dealt with that before. Then I > realized, I had a little introduction to this when writing test programs for > submarine circuit cards that had used transputers. Weren't they developed by (...) (18 years ago, 20-Feb-07, to lugnet.robotics.nxt)
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| | Wait for Sound: Tone
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Given: The Sound block can play a tone. What would it take to create a "Wait for Tone" block or to modify the "Wait for Sound" block to perceive a tone? I think a "Wait for Tone" block would help ease the transition to learning about communications (...) (18 years ago, 20-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) occam ... I was wondering where I had dealt with that before. Then I realized, I had a little introduction to this when writing test programs for submarine circuit cards that had used transputers. Weren't they developed by NASA? David (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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The code is working right well! But i think the stall control at the end o each task has no meaning there, since the until loop does not let the script reach it if the motor become staled. (...) Patrick (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) Yes, Now it is perfect. Not so obvious i think... Thanks! Patrick (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) Hi Patrick, Indeed the Tacholimit can only be positive. But power can be negative, that's the way to reverse direction. Philo (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) Hi Johan, While you're dealing with very practical questions here, I thought I'd throw a paper into the mix: (URL) was presented in the ACM conference on Programming Language Design and Implementation (PLDI) in 2005. It's a nice paper (...) (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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John, (...) It worked just as I expected. The two motors now are rotating the same time. Thanks to your example, now I am giving some time to understand this setOutput call, and reading all the documentation (it is quite easier with pratical (...) (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) Or maybe just wrap the calls inside a mutex, so at least the behaviour is defined, if not optimum. Many of the NBC/NXC macros do exactly that, maybe all of them should? ROSCO (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) I understand his confusion. Not allowing separate threads to call the same subroutine is certainly unexpected. The concept of "thread" conventionally involves separate stacks for local variables (and a shared global state -- unlike separate (...) (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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| | Re: Two motors at the same time... It is possible?
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(...) It is possible. The NXC API doesn't currently wrap this capability in a really simple function. (...) The RotateMotor API function calls a subroutine written in NBC that does not return until the tachometer limit target has been reached. (...) (18 years ago, 19-Feb-07, to lugnet.robotics.nxt)
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