121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* Copyright 2021 Chris Tanaka <https://github.com/christanaka>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "bongo_graphics.h"
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#include QMK_KEYBOARD_H
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#define _IDLE_FRAMES 5
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#define _PREP_FRAMES 1
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#define _TAP_FRAMES 2
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#define _ANIM_BYTES 512 // Number of bytes in array (max is 1024)
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#define _IDLE_FRAME_DURATION 175
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#define _TAP_FRAME_DURATION 75
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#define _PREP_TIMEOUT 750
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enum anim_states
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{
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Idle,
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Prep,
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Tap
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};
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static uint8_t anim_state = Idle;
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static uint8_t anim_duration = _IDLE_FRAME_DURATION;
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static uint32_t anim_timer = 0;
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static uint8_t idle_frame = 0;
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static uint8_t tap_frame = 0;
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static uint32_t prep_timer = 0;
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// Decompress and write a precompressed bitmap frame to the OLED.
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// Documentation and python compression script available at:
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// https://github.com/nullbitsco/squeez-o
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#ifdef USE_OLED_BITMAP_COMPRESSION
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static void oled_write_compressed_P(const char* input_block_map, const char* input_block_list) {
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uint16_t block_index = 0;
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for (uint16_t i = 0; i < NUM_OLED_BYTES; i++) {
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uint8_t bit = i % 8;
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uint8_t map_index = i / 8;
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uint8_t _block_map = (uint8_t)pgm_read_byte_near(input_block_map + map_index);
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uint8_t nonzero_byte = (_block_map & (1 << bit));
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if (nonzero_byte) {
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const char data = (const char)pgm_read_byte_near(input_block_list + block_index++);
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oled_write_raw_byte(data, i);
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} else {
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const char data = (const char)0x00;
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oled_write_raw_byte(data, i);
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}
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}
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}
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#endif
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static void animate(uint8_t x, uint8_t y) {
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oled_set_cursor(x, y);
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// Update frame
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switch (anim_state) {
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case Idle:
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idle_frame = (idle_frame + 1) % _IDLE_FRAMES;
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#ifdef USE_OLED_BITMAP_COMPRESSION
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oled_write_compressed_P(idle_block_map[abs(1 - idle_frame)], idle[abs(1 - idle_frame)]);
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#else
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oled_write_raw_P(idle[abs(1 - idle_frame)], sizeof(idle[abs(1 - idle_frame)]));
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#endif
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break;
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case Prep:
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#ifdef USE_OLED_BITMAP_COMPRESSION
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oled_write_compressed_P(prep_block_map[0], prep[0]);
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#else
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oled_write_raw_P(prep[0], sizeof(prep[0]));
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#endif
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break;
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case Tap:
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tap_frame = (tap_frame + 1) % _TAP_FRAMES;
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#ifdef USE_OLED_BITMAP_COMPRESSION
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oled_write_compressed_P(tap_block_map[abs(1 - tap_frame)], tap[abs(1 - tap_frame)]);
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#else
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oled_write_raw_P(tap[abs(1 - tap_frame)], sizeof(tap[abs(1 - tap_frame)]));
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#endif
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break;
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default:
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break;
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}
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}
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void bongo_render(uint8_t x, uint8_t y) {
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if (timer_elapsed32(anim_timer) > anim_duration) {
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anim_timer = timer_read32();
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animate(x, y);
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}
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if (anim_state == Prep && timer_elapsed32(prep_timer) > _PREP_TIMEOUT) {
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anim_state = Idle;
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anim_duration = _IDLE_FRAME_DURATION;
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}
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}
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void bongo_process_record(keyrecord_t *record) {
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if (record->event.pressed) {
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anim_state = Tap;
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anim_duration = _TAP_FRAME_DURATION;
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} else {
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if (anim_state == Tap) {
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anim_state = Prep;
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prep_timer = timer_read32();
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}
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}
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}
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