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A simple test program to simulate the bitshifting in the ISR.

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Kai Lauterbach 2011-11-30 19:21:11 +01:00 committed by Aaron Mueller
parent a0ae46b6c3
commit 15c681c7e3
1 changed files with 52 additions and 0 deletions
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firmware/isr_test.c Normal file
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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
int main (void)
{
int PORTD = 0xff;
int PORTB = 0xff;
int cube = 0x000001ff;
int cube_level = 0;
char test[100];
int i = 0;
for (i = 0; i < 3; i++)
{
printf("-----------------\ncube_level = %d\n",cube_level);
printf("PORTD = 0x%2x\n", PORTD);
printf("PORTB = 0x%2x\n", PORTB);
PORTD &= 0x87; // 0x87 = 0b10000111; // 7tes Bit löschen (Leitung 9) und alle Ebenen deaktivieren
printf("& 0b10000111: PORTD = 0x%2x\n", PORTD);
PORTD |= ((1 << cube_level)<< 3); // cube_level setzen (Ebene A=0, B=1, C=2)
printf("Level festlegen: PORTD = 0x%2x\n", PORTD);
int tmp = cube_level * 9;
printf("8 Bits aus cube: PORTD = 0x%2x\n", ((~cube & (0xff << tmp)) >> tmp));
// PORTB = 1..8
// 0 = leuchtet, 1 = leuchtet nicht (invertiert!)
PORTB = ((~cube & (0xff << tmp)) >> tmp);
printf("Pins1-8: PORTB = 0x%2x\n", PORTB);
// PORTD &= 0b10111111; // bereits oben erledigt
PORTD |= (((~cube & (1 << (tmp+8))) >> (tmp+8)) << 6);
printf("Pin9: PORTD = 0x%2x\n", PORTD);
cube_level++;
if (cube_level > 2) cube_level = 0;
}
}