diff options
Diffstat (limited to 'keyboards/jj40/keymaps/oscillope/backlight.c')
| -rw-r--r-- | keyboards/jj40/keymaps/oscillope/backlight.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/keyboards/jj40/keymaps/oscillope/backlight.c b/keyboards/jj40/keymaps/oscillope/backlight.c new file mode 100644 index 0000000000..a4cb66e0c4 --- /dev/null +++ b/keyboards/jj40/keymaps/oscillope/backlight.c @@ -0,0 +1,59 @@ +/** + * Backlighting code for PS2AVRGB boards (ATMEGA32A) + * Kenneth A. (github.com/krusli | krusli.me) + */ + +#include "quantum.h" + +#include <avr/pgmspace.h> +#include <avr/interrupt.h> + +// Port D: digital pins of the AVR chipset +#define NUMLOCK_PORT (1 << 1) // 1st pin of Port D (digital) +#define CAPSLOCK_PORT (1 << 2) // 2nd pin +#define BACKLIGHT_PORT (1 << 4) // 4th pin +#define SCROLLLOCK_PORT (1 << 6) // 6th pin + +/** + * References + * Port Registers: https://www.arduino.cc/en/Reference/PortManipulation + * TCCR1A: https://electronics.stackexchange.com/questions/92350/what-is-the-difference-between-tccr1a-and-tccr1b + * Timers: http://www.avrbeginners.net/architecture/timers/timers.html + * 16-bit timer setup: http://sculland.com/ATmega168/Interrupts-And-Timers/16-Bit-Timer-Setup/ + * PS2AVRGB firmware: https://github.com/showjean/ps2avrU/tree/master/firmware + */ + +// @Override +// turn LEDs on and off depending on USB caps/num/scroll lock states. +void led_set_user(uint8_t usb_led) { +/* It appears that these cause the v1 JJ40 PCB to hang. + * I haven't looked into why, but I don't have any LEDs on my board anyway. */ +#if 0 + if (usb_led & (1 << USB_LED_NUM_LOCK)) { + // turn on + DDRD |= NUMLOCK_PORT; + PORTD |= NUMLOCK_PORT; + } else { + // turn off + DDRD &= ~NUMLOCK_PORT; + PORTD &= ~NUMLOCK_PORT; + } + + if (usb_led & (1 << USB_LED_CAPS_LOCK)) { + DDRD |= CAPSLOCK_PORT; + PORTD |= CAPSLOCK_PORT; + } else { + DDRD &= ~CAPSLOCK_PORT; + PORTD &= ~CAPSLOCK_PORT; + } + + if (usb_led & (1 << USB_LED_SCROLL_LOCK)) { + DDRD |= SCROLLLOCK_PORT; + PORTD |= SCROLLLOCK_PORT; + } else { + DDRD &= ~SCROLLLOCK_PORT; + PORTD &= ~SCROLLLOCK_PORT; + } +#endif +} + |