Post your Nspire routines here!

[bwang]

Thanks to bwang, to access time use

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1	int time = * (unsigned*) 0x90090000

Since that is memory-mapped hardware, you need to use * (volatile unsigned*)

Really? yoshi13 tells me just * (unsigned*) worked.

[calc84maniac]

If you have optimization enabled, a loop that waits for this time value to reach a certain amount will probably optimize so 0x90090000 is only read once and that value is compared for the rest of the loop. Using "volatile" will guarantee that the memory will literally be read every time it is referenced.

[t0xic_kitt3n]

I'm having trouble compiling with the skeleton environment. I was able to successfully compile the Ndless demo, whereas Bwang's raycaster and a small test program I wrote won't compile. It seems to not be loading the headers properly.

Here is the code:

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#include <os.h> #include <common.h> #include <utils.h> asm(".string \"PRG\"\n"); int main() {   int antx = 160;   int anty = 120;   int dir = 1;     while (!isKeyPressed(KEY_NSPIRE_ESC)) {     if (getpixel(antx,anty) == 15) {       setpixel(anty,antx,0);       dir = dir - 1;       }     else {       setpixel(anty,antx,15);       dir = dir + 1;       }     if (dir == 0)       dir = 4;     else if (dir == 5)       dir = 1;     if (dir == 1)       antx = antx - 1;     else if (dir == 2)       anty = anty + 1;     else if (dir == 3)       antx = antx + 1;     else       anty = anty - 1;     if (antx == 0)       antx = 320;     else if (antx == 321)       antx = 1;     if (anty == 0)       anty = 240;     else if (anty ==  241)       anty = 1;    }    return 0; }

And the the full output:

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arm-elf-gcc -mcpu=arm7tdmi -O3 -Wall -W -fpie -fno-merge-constants -c -I./header s -D NON_CAS main.c In file included from ./headers/os.h:17,                  from main.c:1: ./headers/common.h:62:20: warning: missing whitespace after the macro name ./headers/common.h:71:22: warning: missing whitespace after the macro name ./headers/common.h:114:20: warning: missing whitespace after the macro name ./headers/common.h:114:1: warning: "KEY_NSPIRE_" redefined ./headers/common.h:62:1: warning: this is the location of the previous definitio n ./headers/common.h:116:20: warning: missing whitespace after the macro name ./headers/common.h:116:1: warning: "KEY_NSPIRE_" redefined ./headers/common.h:114:1: warning: this is the location of the previous definiti on main.c: In function 'setPixel': main.c:23: warning: implicit declaration of function 'getpixel' main.c:24: warning: implicit declaration of function 'setpixel' main.c:52: warning: 'return' with a value, in function returning void main.c: In function 'main': main.c:53: error: expected declaration or statement at end of input make: *** [main.o] Error 1

If it matters, I'm using the arm-elf-gcc version of yagarto.

[bwang]

Fixed code:

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#include <os.h> //notice the quotes around utils.h #include "utils.h" asm(".string \"PRG\"\n"); int main() {   int antx = 160;   int anty = 120;   int dir = 1;   while (!isKeyPressed(KEY_NSPIRE_ESC)) {     if (getPixel(antx,anty) == 15) {       setPixel(anty,antx,0);       dir = dir - 1;       }     else {       setPixel(anty,antx,15);       dir = dir + 1;       }     if (dir == 0)       dir = 4;     else if (dir == 5)       dir = 1;     if (dir == 1)       antx = antx - 1;     else if (dir == 2)       anty = anty + 1;     else if (dir == 3)       antx = antx + 1;     else       anty = anty - 1;     if (antx == 0)       antx = 320;     else if (antx == 321)       antx = 1;     if (anty == 0)       anty = 240;     else if (anty ==  241)       anty = 1;    }    return 0; }

I also updated skeleton.zip to use willrandship's common.h, as well as some other minor changes.

[t0xic_kitt3n]

I tried that, and I'm still getting the same error message.

-Edit: I feel so stupid! The problem with the getPixel and setPixel was me not capitalizing the P. Now, I get the demo.bin and demo.elf files, but maketns won't work. Here's the error message:

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process_begin: CreateProcess(C:\Users\Amar\Desktop\skeleton\tools\MakeTNS\MakeTNS, ./tools/MakeTNS/MakeTNS demo.bin demo-noncas.tns, ...) failed. make (e=193): Error 193 make: *** [demo] Error 193

[bwang]

What does manually running the MakeTNS command do?
yoshi13 said he installed mingw first, then msys.

[t0xic_kitt3n]

Windows says its not a valid program. I am not using minGW or msys, just yagarto and yagarto-tools.

[bwang]

Hmmm...my fault The MakeTNS in the skeleton is a Linux version. Go get a fresh copy of Ndless and copy the MakeTNS in it to the appropriate directory.
I shall fix the skeleton when I have time.
EDIT: Fixed!

[DJ Omnimaga]

Nice to see an update (and to see you return), bwang ^^

[t0xic_kitt3n]

I replaced makeTNS and it worked! My test program was a Langton's Ant, which runs crazy fast! Now my only problem is that the calc crashes when I press esc. Anyone know why that's happening?

[bwang]

You might be running out of bounds with your setPixel().

[calc84maniac]

Yeah, looking at that code, you getPixel(antx,anty) but setPixel(anty,antx,color). Is it supposed to be x,y or y,x?

[t0xic_kitt3n]

Oh, I think the code I posted was an old version. My current version fills the whole screen.

[bwang]

If your pixels travel out of the screen and you don't check the bounds, you will get a crash.

[bwang]

Hmmm...I have to doublepost
I edited the first post and attached some possibly useful fast (addition only) circle and line routines.