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Diffstat (limited to 'keyboards/duck/jetfire/backlight_led.c')
-rw-r--r-- | keyboards/duck/jetfire/backlight_led.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/keyboards/duck/jetfire/backlight_led.c b/keyboards/duck/jetfire/backlight_led.c new file mode 100644 index 0000000000..7e9dca6e9f --- /dev/null +++ b/keyboards/duck/jetfire/backlight_led.c @@ -0,0 +1,129 @@ +/* +Copyright 2016 Ralf Schmitt <[email protected]> +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <avr/interrupt.h> +#include <avr/io.h> +#include <stdbool.h> +#include <util/delay.h> +#include <stdint.h> +#include "backlight_led.h" +#include "quantum.h" +// #include "led.h" + + +#define T1H 900 +#define T1L 600 +#define T0H 400 +#define T0L 900 +#define RES 6000 + +#define NS_PER_SEC (1000000000L) +#define CYCLES_PER_SEC (F_CPU) +#define NS_PER_CYCLE (NS_PER_SEC / CYCLES_PER_SEC) +#define NS_TO_CYCLES(n) ((n) / NS_PER_CYCLE) + +void send_bit_d4(bool bitVal) +{ + if(bitVal) { + asm volatile ( + "sbi %[port], %[bit] \n\t" + ".rept %[onCycles] \n\t" + "nop \n\t" + ".endr \n\t" + "cbi %[port], %[bit] \n\t" + ".rept %[offCycles] \n\t" + "nop \n\t" + ".endr \n\t" + :: + [port] "I" (_SFR_IO_ADDR(PORTD)), + [bit] "I" (4), + [onCycles] "I" (NS_TO_CYCLES(T1H) - 2), + [offCycles] "I" (NS_TO_CYCLES(T1L) - 2)); + } else { + asm volatile ( + "sbi %[port], %[bit] \n\t" + ".rept %[onCycles] \n\t" + "nop \n\t" + ".endr \n\t" + "cbi %[port], %[bit] \n\t" + ".rept %[offCycles] \n\t" + "nop \n\t" + ".endr \n\t" + :: + [port] "I" (_SFR_IO_ADDR(PORTD)), + [bit] "I" (4), + [onCycles] "I" (NS_TO_CYCLES(T0H) - 2), + [offCycles] "I" (NS_TO_CYCLES(T0L) - 2)); + } +} + +void send_bit_d6(bool bitVal) +{ + if(bitVal) { + asm volatile ( + "sbi %[port], %[bit] \n\t" + ".rept %[onCycles] \n\t" + "nop \n\t" + ".endr \n\t" + "cbi %[port], %[bit] \n\t" + ".rept %[offCycles] \n\t" + "nop \n\t" + ".endr \n\t" + :: + [port] "I" (_SFR_IO_ADDR(PORTD)), + [bit] "I" (6), + [onCycles] "I" (NS_TO_CYCLES(T1H) - 2), + [offCycles] "I" (NS_TO_CYCLES(T1L) - 2)); + } else { + asm volatile ( + "sbi %[port], %[bit] \n\t" + ".rept %[onCycles] \n\t" + "nop \n\t" + ".endr \n\t" + "cbi %[port], %[bit] \n\t" + ".rept %[offCycles] \n\t" + "nop \n\t" + ".endr \n\t" + :: + [port] "I" (_SFR_IO_ADDR(PORTD)), + [bit] "I" (6), + [onCycles] "I" (NS_TO_CYCLES(T0H) - 2), + [offCycles] "I" (NS_TO_CYCLES(T0L) - 2)); + } +} + +void show(void) +{ + _delay_us((RES / 1000UL) + 1); +} + +void send_value(uint8_t byte, enum Device device) +{ + for(uint8_t b = 0; b < 8; b++) { + if(device == Device_STATELED) { + send_bit_d4(byte & 0b10000000); + } + if(device == Device_PCBRGB) { + send_bit_d6(byte & 0b10000000); + } + byte <<= 1; + } +} + +void send_color(uint8_t r, uint8_t g, uint8_t b, enum Device device) +{ + send_value(g, device); + send_value(r, device); + send_value(b, device); +} |