keyboards/duck/octagon/v2/indicator_leds.c

   1 /*
   2 Copyright 2017 MechMerlin <mechmerlin@gmail.com>
   3
   4 This program is free software: you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation, either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17 #include <avr/interrupt.h>
  18 #include <avr/io.h>
  19 #include <stdbool.h>
  20 #include <util/delay.h>
  21 #include "indicator_leds.h"
  22
  23 #define LED_T1H  900
  24 #define LED_T1L  600
  25 #define LED_T0H  400
  26 #define LED_T0L  900
  27
  28 void send_bit_d4(bool bitVal) {
  29   if(bitVal) {
  30     asm volatile (
  31         "sbi %[port], %[bit] \n\t"
  32         ".rept %[onCycles] \n\t"
  33         "nop \n\t"
  34         ".endr \n\t"
  35         "cbi %[port], %[bit] \n\t"
  36         ".rept %[offCycles] \n\t"
  37         "nop \n\t"
  38         ".endr \n\t"
  39         ::
  40         [port]      "I" (_SFR_IO_ADDR(PORTD)),
  41         [bit]       "I" (4),
  42         [onCycles]  "I" (NS_TO_CYCLES(LED_T1H) - 2),
  43         [offCycles] "I" (NS_TO_CYCLES(LED_T1L) - 2));
  44   } else {
  45     asm volatile (
  46         "sbi %[port], %[bit] \n\t"
  47         ".rept %[onCycles] \n\t"
  48         "nop \n\t"
  49         ".endr \n\t"
  50         "cbi %[port], %[bit] \n\t"
  51         ".rept %[offCycles] \n\t"
  52         "nop \n\t"
  53         ".endr \n\t"
  54         ::
  55         [port]      "I" (_SFR_IO_ADDR(PORTD)),
  56         [bit]       "I" (4),
  57         [onCycles]  "I" (NS_TO_CYCLES(LED_T0H) - 2),
  58         [offCycles] "I" (NS_TO_CYCLES(LED_T0L) - 2));
  59   }
  60 }
  61
  62 void send_bit_d6(bool bitVal)
  63 {
  64   if(bitVal) {
  65     asm volatile (
  66         "sbi %[port], %[bit] \n\t"
  67         ".rept %[onCycles] \n\t"
  68         "nop \n\t"
  69         ".endr \n\t"
  70         "cbi %[port], %[bit] \n\t"
  71         ".rept %[offCycles] \n\t"
  72         "nop \n\t"
  73         ".endr \n\t"
  74         ::
  75         [port]      "I" (_SFR_IO_ADDR(PORTD)),
  76         [bit]       "I" (6),
  77         [onCycles]  "I" (NS_TO_CYCLES(LED_T1H) - 2),
  78         [offCycles] "I" (NS_TO_CYCLES(LED_T1L) - 2));
  79   } else {
  80     asm volatile (
  81         "sbi %[port], %[bit] \n\t"
  82         ".rept %[onCycles] \n\t"
  83         "nop \n\t"
  84         ".endr \n\t"
  85         "cbi %[port], %[bit] \n\t"
  86         ".rept %[offCycles] \n\t"
  87         "nop \n\t"
  88         ".endr \n\t"
  89         ::
  90         [port]      "I" (_SFR_IO_ADDR(PORTD)),
  91         [bit]       "I" (6),
  92         [onCycles]  "I" (NS_TO_CYCLES(LED_T0H) - 2),
  93         [offCycles] "I" (NS_TO_CYCLES(LED_T0L) - 2));
  94   }
  95 }
  96
  97 void send_value(uint8_t byte, enum Device device) {
  98   for(uint8_t b = 0; b < 8; b++) {
  99     if(device == Device_STATUSLED) {
 100       send_bit_d4(byte & 0b10000000);
 101     }
 102     if(device == Device_PCBRGB) {
 103       send_bit_d6(byte & 0b10000000);
 104     }
 105     byte <<= 1;
 106   }
 107 }
 108
 109 void send_color(uint8_t r, uint8_t g, uint8_t b, enum Device device) {
 110   send_value(r, device);
 111   send_value(g, device);
 112   send_value(b, device);
 113 }
 114
 115 // Port from backlight_set_state
 116 void indicator_leds_set(bool leds[8]) {
 117   cli();
 118   send_color(leds[1] ? 255 : 0, leds[2] ? 255 : 0, leds[0] ? 255 : 0, Device_STATUSLED);
 119   send_color(leds[4] ? 255 : 0, leds[3] ? 255 : 0, leds[5] ? 255 : 0, Device_STATUSLED);
 120   leds[6] ? (PORTD &= ~0b10000000) : (PORTD |= 0b10000000);
 121   sei();
 122   show();
 123 }