- /*
- Copyright 2016 Ralf Schmitt <ralf@bunkertor.net>
- 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 "indicator_leds.h"
- #include "quantum.h"
-
- #define LED_T1H 900
- #define LED_T1L 600
- #define LED_T0H 400
- #define LED_T0L 900
-
- 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(LED_T1H) - 2),
- [offCycles] "I" (NS_TO_CYCLES(LED_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(LED_T0H) - 2),
- [offCycles] "I" (NS_TO_CYCLES(LED_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(LED_T1H) - 2),
- [offCycles] "I" (NS_TO_CYCLES(LED_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(LED_T0H) - 2),
- [offCycles] "I" (NS_TO_CYCLES(LED_T0L) - 2));
- }
- }
-
- void send_value(uint8_t byte, enum Device device)
- {
- for(uint8_t b = 0; b < 8; b++) {
- if(device == Device_STATUSLED) {
- 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(r, device);
- send_value(g, device);
- send_value(b, device);
- }
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