 | | LegOS bug - firmware unlock string not below CC00h in some circumstances
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Just thought I'd better report this... Firmdl3 is unable to download very large statically linked programs (with a .text segment greater than 4c00h bytes). Unlike previous size related bugs, this is *not* caused by firmdl, but rather by kmain.c. (...) (23 years ago, 28-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: C standard functions with legOS?
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(...) As other people have pointed out, its not possible to use them straight off. I've written some floating point code for my own use to do conversions between rectangular (x,y) and polar (dist, bearing) calculations. The codes not documented I'm (...) (23 years ago, 27-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: C standard functions with legOS?
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(...) I've been meaning to butt in on this discussion sometime, but I got caught up in things, but better late than never. The source you refer to is probably mine. I wrote a suite of fixed-point math routines for multiplication, division, and (...) (23 years ago, 27-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: C standard functions with legOS?
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(...) An alternative is using fixed point math. There was some posts time ago, with C source for trigonometric functions. If you are interested, I should have links to them, somewhere (or do a `search' :-). bye Bernardo New e-mail: (...) (23 years ago, 26-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: C standard functions with legOS?
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(...) The cross-compiler is set up to not use standard libraries. This is to give more control over the code produced. Also, many standard functions just wouldn't work on the H8. There is a float library (lib/float), which allows use of floating (...) (23 years ago, 25-Apr-01, to lugnet.robotics.rcx.legos)
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| | C standard functions with legOS?
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Is it possible to use functions from C standard libraries with legOS, e.g. sin() from math.h or abs() from stdlib.h? They are a part of gcc, but e.g. math.h seems to produce compiler errors. Best regards. Michael Wisse (23 years ago, 25-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: lcd
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Yes, if you have three values, just display them like this : cputw((VALUE_1 << 8) + (VALUE_2 << 4) + (VALUE_3)); (...) (23 years ago, 25-Apr-01, to lugnet.robotics.rcx.legos)
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| | lcd
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Is it possible to display 2 lcd intergers on the screen at the same time? ie 2 rotation sensors. Thanks in advance chris (23 years ago, 25-Apr-01, to lugnet.robotics.rcx.legos)
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| | Re: Sensor Commands and legOS 0.2.3
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(...) TOUCH_1 is a macro defined in dsensor.h starting form version 0.2.4. If you don't want to upgrade, here is the code: #define TOUCH(a) ((unsigned int)(a) < 0x8000) #define TOUCH_1 TOUCH(SENSOR_1) #define TOUCH_2 TOUCH(SENSOR_2) #define TOUCH_3 (...) (23 years ago, 24-Apr-01, to lugnet.robotics.rcx.legos)
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| | Sensor Commands and legOS 0.2.3
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I just installed legOS 0.2.3 under Redhat 6.2, using the RPM's that were linked to in the HOWTO. Everything I have tried so far has worked great, except for getting my touch sensors to work. The documentation I have read said that in 0.2.x one could (...) (23 years ago, 24-Apr-01, to lugnet.robotics.rcx.legos)
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