Simple single-color 8x8x8 LED Cube with AVRs
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buffhelp.c 1.5KB

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  1. /*
  2. * buffhelp.h
  3. *
  4. * Copyright 2011 Thomas Buck <xythobuz@me.com>
  5. * Copyright 2011 Max Nuding <max.nuding@gmail.com>
  6. * Copyright 2011 Felix Bäder <baeder.felix@gmail.com>
  7. *
  8. * This file is part of LED-Cube.
  9. *
  10. * LED-Cube is free software: you can redistribute it and/or modify
  11. * it under the terms of the GNU General Public License as published by
  12. * the Free Software Foundation, either version 3 of the License, or
  13. * (at your option) any later version.
  14. *
  15. * LED-Cube is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU General Public License
  21. * along with LED-Cube. If not, see <http://www.gnu.org/licenses/>.
  22. */
  23. #include <avr/io.h>
  24. #include <stdint.h>
  25. #include <stdlib.h>
  26. #include <serial.h>
  27. #include <strings.h>
  28. uint8_t *buffNew(void) {
  29. uint8_t i;
  30. uint8_t *tmp = (uint8_t *)malloc(64);
  31. if (tmp == NULL) {
  32. #ifdef DEBUG
  33. serialWriteString(getString(24));
  34. #endif
  35. while(1); // Ran out of heap => Watchdog Reset
  36. }
  37. for (i = 0; i < 64; i++) {
  38. // Clear pixels
  39. tmp[i] = 0;
  40. }
  41. return tmp;
  42. }
  43. void buffSetPixel(uint8_t *buffer, uint8_t x, uint8_t y, uint8_t z) {
  44. buffer[(8 * (7 - z)) + (7 - y)] |= (1 << x);
  45. }
  46. void buffClearPixel(uint8_t *buffer, uint8_t x, uint8_t y, uint8_t z) {
  47. buffer[(8 * (7 - z)) + (7 - y)] &= ~(1 << x);
  48. }
  49. void buffFree(uint8_t *buffer) {
  50. free(buffer);
  51. }