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| 1199 | - | 1 | /**************************************************************************** |
| 2 | * Copyright (C) 2011 by Claas Anders "CaScAdE" Rathje * |
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| 3 | * admiralcascade@gmail.com * |
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| 4 | * Project-URL: http://www.mylifesucks.de/oss/c-epilepsy/ * |
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| 5 | * * |
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| 6 | * This program is free software; you can redistribute it and/or modify * |
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| 7 | * it under the terms of the GNU General Public License as published by * |
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| 8 | * the Free Software Foundation; either version 2 of the License. * |
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| 9 | * * |
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| 10 | * This program is distributed in the hope that it will be useful, * |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 13 | * GNU General Public License for more details. * |
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| 14 | * * |
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| 15 | * You should have received a copy of the GNU General Public License * |
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| 16 | * along with this program; if not, write to the * |
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| 17 | * Free Software Foundation, Inc., * |
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| 18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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| 19 | ****************************************************************************/ |
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| 20 | |||
| 21 | #include "led_out.h" |
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| 22 | |||
| 23 | #define ROWPORT PORTA |
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| 24 | #define COLPORT PORTC |
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| 25 | #define COLBASE (1 << PC2) |
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| 26 | |||
| 27 | |||
| 28 | |||
| 29 | uint8_t col = 0; |
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| 30 | uint8_t delay = 0; |
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| 31 | |||
| 32 | uint8_t on = 0; // on-round or off-round |
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| 33 | |||
| 34 | uint8_t animation[7]; |
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| 35 | volatile uint8_t animation_locked = 0; |
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| 36 | |||
| 37 | #define TIMESON 7 // time slices to stay on |
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| 38 | #define TIMESOFF 3 // time slices to stay off |
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| 39 | |||
| 40 | void led_out_init() { |
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| 41 | DDRA |= 0xFF; // Z0-Z7 output |
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| 42 | DDRC |= ((1 << PC2) | (1 << PC3) | (1 << PC4) | (1 << PC5) | (1 << PC6) | (1 << PC7)); // S0-S5 output |
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| 43 | } |
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| 44 | |||
| 45 | void inline led_timer_callback() { |
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| 46 | if (!animation_locked) { |
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| 47 | // the Epilepsy was not build for powering the LEDs constantly, so we force a dim |
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| 48 | delay--; |
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| 49 | |||
| 50 | // only after |
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| 51 | if (!delay) { |
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| 52 | if (on) { |
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| 53 | // time is up, go dark |
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| 54 | ROWPORT = 0; |
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| 55 | COLPORT &= ~(COLBASE << col); |
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| 56 | |||
| 57 | // controll next col in next round |
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| 58 | col = (col + 1) % 6; |
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| 59 | |||
| 60 | delay = TIMESOFF; |
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| 61 | } else { |
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| 62 | COLPORT |= (COLBASE << col); |
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| 63 | |||
| 64 | // hardware EPI10AQ41 has the rows reversed |
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| 65 | // to convert old animations use |
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| 66 | // http://www.mylifesucks.de/tools/epireverse/ |
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| 67 | #if HWVERSION == EPI10AQ41 |
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| 68 | uint8_t reverse = 0; |
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| 69 | for (uint8_t mask = 128; mask; mask >>= 1) { |
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| 70 | reverse >>= 1; |
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| 71 | if (animation[col] & mask) { |
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| 72 | reverse |= 128; |
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| 73 | } |
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| 74 | } |
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| 75 | ROWPORT = reverse; |
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| 76 | #else |
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| 77 | ROWPORT = animation[col]; |
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| 78 | #endif |
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| 79 | delay = TIMESON; |
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| 80 | } |
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| 81 | |||
| 82 | on = !on; |
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| 83 | } |
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| 84 | } |
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| 85 | } |
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| 86 |