 | | Re: ARM Assembly Language Programming on NXT?
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Hi T.C. (...) aha. I just programmed some startup and interrupt wrapper code (the rest is C), so I didn't get into the higher reaches of macros etc. Jürgen (17 years ago, 16-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: ARM Assembly Language Programming on NXT?
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(...) Sorry, I found a more recent version, but it's still missing some parts on the ARM architecture: (URL) also found the following Intro guide (which is better than nothing): (URL) (17 years ago, 16-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: ARM Assembly Language Programming on NXT?
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Hi Juergen, Thanks for replying. (...) Thanks for the info. My goal is to run and debug ARM assembly language programs executing in RAM. I was not familiar with the NXT, so currently I'm looking at the on-board capabilities. I realized after some (...) (17 years ago, 16-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: ARM Assembly Language Programming on NXT?
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Hi T.C., (...) I have an AT91SAM7S-EK here, it has 4 LEDs and 4 touch buttons. It should also be fairly easy to write a driver for one of the serial ports (polling would suffice for a start). On the NXT the only I/O that is easy to use with the (...) (17 years ago, 14-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: ARM Assembly Language Programming on NXT?
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(...) Thanks for the tip. I glanced at (URL) previously but I must've missed it thinking it's Java based. (...) Are you referring to the default NXT firmware or the LEJOS NXJ/OSEK firmware? (...) You're right, I've come across several ARM-based SBC (...) (17 years ago, 9-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: ARM Assembly Language Programming on NXT?
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(...) Thanks Dick for intruducing LEJOS OSEK, When we develolped LEJOS OSEK, Prof. Mizuno wrote several GCC assembly code to port TOPPERS OSEK (an open source OSEK OS) to NXT. Whole assembly code(*.S) is stored in lejos_osek\toppers_o...1sam7s-gnu (...) (17 years ago, 9-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | RE: ARM Assembly Language Programming on NXT?
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Do a Google on "LEJOS OSEK". I believe this is a solution that has taken the base "OS" from the NXJ JAVA byte code interpreter as the basis for programming the NXT using GCC C++. I assume if you can use the GCC C/C++ tools with the NXT then you (...) (17 years ago, 8-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | ARM Assembly Language Programming on NXT?
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Hi, I just stumbled on this newsgroup/website while searching for kits for teaching Assembly Language programming to undergraduate students in Comp. Science in an interesting (interactive) manner. I'm primarily interested in the ARM instruction set. (...) (17 years ago, 8-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: US-Sensor I2C-address
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(...) To my knowledge the LEGO Ultrasonic sensor does not support changing its I2C address. IIRC it is hard-coded to 0x02. I do not think it is ADPA-compliant. John Hansen (17 years ago, 5-Sep-07, to lugnet.robotics.nxt.nxthacking)
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| | US-Sensor I2C-address
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Hello Community, is there currently a known way to change the I2C-Address of the Ultrasonic sensor ? What's the magic with the ADAP ? Thanks for some informations Bye Christian (17 years ago, 4-Sep-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: The standard NXT firmware & the case of the missing opcodes
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(...) Could you, please, confirm, that the latest version of NBC then translates the following two commands with three arguments listed in the NBC manual: shr shl to the correct new opcodes of the enhanced firmware (depending on the type of the (...) (17 years ago, 30-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: The standard NXT firmware & the case of the missing opcodes
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(...) If you download the test_release.zip that I uploaded late last night you will be able to use these new opcodes (after installing the enhanced firmware in lms_arm_jch.zip) in both NBC and NXC programs. Here is some sample NXC code: task goofy() (...) (17 years ago, 23-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: The standard NXT firmware & the case of the missing opcodes
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(...) I don't think I ever got around to mentioning this here, but a long time ago I implemented all of the above opcodes in my NBC/NXC enhanced standard NXT firmware. I implemented all of the shift opcodes so that they take 3 parameters rather than (...) (17 years ago, 22-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: LEJOS OSEK giving me funky dll errors
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(...) The problem that you have encountered seems to be a common Cygwin problem. (please google cygintl-3.dll). I guess that you need to re-install Cygwin. In my case, I just select make 3.81-1 under Devl and other stuff remains as default during (...) (17 years ago, 19-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | LEJOS OSEK giving me funky dll errors
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I've installed LEJOS OSEK 1.04, but when I try to make all in the helloworld example, I get the error "This application has failed to start because cygintl-3.dll was not found. Re-installing the application may fix this problem." I've tried telling (...) (17 years ago, 17-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Real C/C++ Programming Solution?
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Takashi Chikamasa wrote: LEJOS OSEK also supports the program upload to Flash. However, I intentionally (...) As far as I know, this is from the manufacturers extreme limits of operation. I have personally cycled my NXT through a SAMBA load many (...) (17 years ago, 15-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Real C/C++ Programming Solution?
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(...) LEJOS OSEK also supports the program upload to Flash. However, I intentionally do not describe it in the docs. I am not sure about the life cycle of Flash in the ATMEL ARM7 very well, however, some lugnet discussions told me that the lifecyle (...) (17 years ago, 15-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Real C/C++ Programming Solution?
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(...) The closed-loop features I'd like would be comparable to those implemented in the Charmed Labs Xport Botball Controller (see charmedlabs.com and botball.org) - PID control of velocity, with a "move to position" command and preferably (not (...) (17 years ago, 10-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: NXT memory map
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(...) Strange, for me it is always easy to find with Google: (URL) data sheet is here: (URL) Jürgen Stuber <juergen@jstuber.net> (URL) (17 years ago, 10-Aug-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: Real C/C++ Programming Solution?
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(...) Actually, implementing a closed-loop motor control in LEJOS OSEK is not difficult. I already have done for NXTway-DS(complex state space feedback) and NXT GT(P control for motor rev. angle). A significant factor to implement a close-loop motor (...) (17 years ago, 8-Aug-07, to lugnet.robotics.nxt.nxthacking)
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