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When you build a string by inserting characters with the mid statement, the next character will be whatever is left over from when the string was last used. But bascom assumes that the end of the stri ...

xtea has to have somewhere to do its operations, and the 'easiest' place is on the incoming array, and it does multiple operations on each byte. Even if you rewrote the xtea code, I seriously doubt i ...

Floating point always has rounding errors. Doing calcs in double precision is one way, but it really only masks the problem by pushing it down several decimal places, at the expense of very much long ...

Nice sensor ! Pity they werent around when I needed such a thing 10 years or so ago !

You should consider also the turnoff time of the LED panel, and what sort of LEDs they are ( white phosphor, or direct output ). Probably much shorter than the ADC conversion time, but worth checking ...

I agree with hgruensis.

In 20+ years of using both ASM and Bascom, I only found a couple of cases where ASM was significanty faster than Bascom. Now that Bascom has direct use of the registers to ...

I still cant see the point in assigning high level data in assembler. Assembler has no direct commands for handling any form of data other than bytes. Anything else, you have to code subroutines for ...

Hmm,

Measuring the position might be the harder of the several problems.

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@ O-family
True, but I would hardly class 3D vector geometry as "advanced" Yes it needs some trigonometry, and possibly vector algebra, but these are easy in Bascom, and if you stick to single preci ...

Since its essentially a geometric problem, I would solve it by doing some analytic geometry to derive actual math expressions for the values you are trying to find, then just evaluate the formula in r ...

You can also set a fuse to disable writing to the bootloader area. Obviously, do this after installing the bootloader !

And for added general security, set another fuse bit to prevent any read a ...

Great you solved it !

One thing I used to do to trace this sort of corruption was to rearrange the order variables are defined. Then see whether the corruption happens on the same or a different v ...

Both are the same, the timer is read as two bytes, and as long as Bascom reads them in the correct order ( which I am sure it does ) then a low byte rollover is prevented before the upper byte is tran ...

@EDC
Yes, if you concat a character on the end of a string, just by doing tempstr = tempstr + chr the null is inserted automatically. But last time I looked, if you use the Mid function to insert a ...