 | | BrickOS Threading...
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I'm having a problem, and I hope someone can help me. I've been running winLegOS, and I've switched to the latest version of BrickOS. I created a way to control the motors, which will reliably speed them up, and slow them down by using different (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | sys_time (long post)
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As I was poking around in the BrickOS kernel, it occurred to me that using the sys_time variable isn't entirely safe. Since sys_time is 32-bits and the processor can only read 16-bits at a time into a register, there is a period of time between the (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Cygwin under Virtual PC on OS X
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(...) David, I was not sure how you tried to build the cross compiler but I know that Apple provides several gnu tools that work under Darwin. Darwin from my understanding is the underlying code for the Mac OS X (See FAQ at (URL) So one might be (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Cygwin under Virtual PC on OS X
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Oops, Sorry if I accidentally gave anyone false hope, I ment to say: I have not found any cross compiler packages for LegOS or the Hitachi H8 that are buildable under OS X (but would love to find one). Anyone know of any? (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Firmware download troubles
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(...) Look at Edit/Preferences. On the General tab is a checkbox labeled "Use fast mode when downloading firmware" You can uncheck that option to use normal speed firmware downloads via BricxCC. John Hansen (URL) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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The low buzz tone is an error generated by the ROM firmware for failure condition detected as part of the "unlock firmware" opcode. There are two causes of this. [1] ROM software calculates a checksum value of the downloaded firmware and this (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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(...) ... (...) Dick and others, Thanks - this helped. What I did to solve this was run the NCQ command-line download at "normal" speed. This worked the first time. Interestingly, I am not sure that the Bricx (v3.3) download was running quad speed (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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A likely explanation for your downloading problem is the following. Standard Lego software uses 2400 baud data rate and a protocol that sends "double" bytes. The "double" byte is that each data byte is followed by its complement. Alternative (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | RE: Installation Help!
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Max, Aha! I did that and it got a lot further this time, but still failed. I'll have to wade through the log file to try and pinpoint where it went wrong as I don't want to post the whole 180k. Thanks for your help! Andy -----Original Message----- (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Firmware download troubles
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Matt, I discovered that the IR LED's and detector on my serial tower was located higher than I expected and pointed upward somewhat. I was able to get better transfers when the tower was leaning forward (pointing downward so to speak). Otherwise, I (...) (22 years ago, 9-Dec-02, to lugnet.robotics.rcx)
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