From a63d4774f5115b91703936183a39a4724b44b94d Mon Sep 17 00:00:00 2001 From: MechMerlin <30334081+mechmerlin@users.noreply.github.com> Date: Sun, 26 Aug 2018 09:30:49 -0700 Subject: Keyboard: Putting all my ducks in a row: Lightsaver (#3758) --- keyboards/duck/lightsaver/indicator_leds.c | 91 ++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 keyboards/duck/lightsaver/indicator_leds.c (limited to 'keyboards/duck/lightsaver/indicator_leds.c') diff --git a/keyboards/duck/lightsaver/indicator_leds.c b/keyboards/duck/lightsaver/indicator_leds.c new file mode 100644 index 0000000000..0a54e151e1 --- /dev/null +++ b/keyboards/duck/lightsaver/indicator_leds.c @@ -0,0 +1,91 @@ +/* +Copyright 2016-2017 Ralf Schmitt Rasmus Schults + +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 . +*/ +#include +#include +#include +#include + +#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 show(void) { + _delay_us((RES / 1000UL) + 1); +} + +void send_value(uint8_t byte) { + for(uint8_t b = 0; b < 8; b++) { + send_bit_d4(byte & 0b10000000); + byte <<= 1; + } +} + +void send_color(uint8_t r, uint8_t g, uint8_t b) { + send_value(g); + send_value(r); + send_value(b); +} + +void indicator_leds_set(bool leds[8]) { + cli(); + send_color(leds[1] ? 255 : 0, leds[2] ? 255 : 0, leds[0] ? 255 : 0); + send_color(leds[4] ? 255 : 0, leds[5] ? 255 : 0, leds[3] ? 255 : 0); + send_color(leds[6] ? 255 : 0, leds[7] ? 255 : 0, 0); + sei(); + show(); +} -- cgit v1.2.3