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led.c 1.5KB

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  1. /*
  2. Copyright 2014 Kai Ryu <[email protected]>
  3. This program is free software: you can redistribute it and/or modify
  4. it under the terms of the GNU General Public License as published by
  5. the Free Software Foundation, either version 2 of the License, or
  6. (at your option) any later version.
  7. This program is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10. GNU General Public License for more details.
  11. You should have received a copy of the GNU General Public License
  12. along with this program. If not, see <http://www.gnu.org/licenses/>.
  13. */
  14. #include <avr/io.h>
  15. #include "stdint.h"
  16. #include "led.h"
  17. #ifndef LEDMAP_ENABLE
  18. /* LED pin configuration
  19. * CapsLock: PC7
  20. * NumLock: PE6
  21. */
  22. void led_set(uint8_t usb_led)
  23. {
  24. if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
  25. // output low
  26. DDRC |= (1<<PC7);
  27. PORTC &= ~(1<<PC7);
  28. }
  29. else {
  30. // Hi-Z
  31. DDRC &= ~(1<<PC7);
  32. PORTC &= ~(1<<PC7);
  33. }
  34. if (usb_led & (1<<USB_LED_NUM_LOCK)) {
  35. // output low
  36. DDRE |= (1<<PE6);
  37. PORTE &= ~(1<<PE6);
  38. }
  39. else {
  40. // Hi-Z
  41. DDRE &= ~(1<<PE6);
  42. PORTE &= ~(1<<PE6);
  43. }
  44. if (usb_led & (1<<USB_LED_SCROLL_LOCK)) {
  45. // output high
  46. DDRC |= (1<<PC6);
  47. PORTC |= (1<<PC6);
  48. }
  49. else {
  50. // Hi-Z
  51. DDRC &= ~(1<<PC6);
  52. PORTC &= ~(1<<PC6);
  53. }
  54. }
  55. #endif