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avr/lantern/main.c

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/*
Copyright 2022, Savanni D'Gerinel <savanni@luminescent-dreams.com>
This file is part of Savanni's AVR library.
This AVR library 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 3 of the License, or (at your option) any later version.
This AVR library 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 AVR library. If not, see <https://www.gnu.org/licenses/>.
*/
#include <dio.h>
#include <sk9822.h>
#include <rng.h>
#include <animation.h>
#include <display.h>
#include <avr/sleep.h>
#include <stdbool.h>
#include <stdio.h>
#define FPS 15
// #define FRAME_DELAY_MS 1000 / FPS
#define FRAME_DELAY_MS 1000
#define LIGHT_COUNT 3
typedef enum {
test,
normal,
creepy,
eerie,
flash
} color_scheme_e;
uint8_t random_step(uint8_t value, uint8_t min, uint8_t max, rng_t *rng) {
int8_t step = (rng_sample(rng) % 20) - 10;
int new_value = value + step;
if (new_value > max) {
return max;
} else if (new_value < min) {
return min;
} else {
return new_value;
}
}
typedef struct {
rgb_t color;
time_line_t red_line;
time_line_t green_line;
time_line_t blue_line;
uint8_t frame;
uint8_t duration;
} animation_t;
animation_t animation_new(void) {
return (animation_t) {
.color = { .brightness = 1, .r = 0, .g = 0, .b = 0 },
.red_line = time_line_new(0, 0, 0, 0),
.green_line = time_line_new(0, 0, 0, 0),
.blue_line = time_line_new(0, 0, 0, 0),
.frame = 0,
.duration = 0,
};
}
void animation_begin(animation_t *self, uint8_t rdest, uint8_t gdest, uint8_t bdest, uint8_t duration) {
self->red_line = time_line_new(0, self->color.r, duration, rdest);
self->green_line = time_line_new(0, self->color.g, duration, gdest);
self->blue_line = time_line_new(0, self->color.b, duration, bdest);
self->frame = 0;
self->duration = duration;
}
void animation_step(animation_t *self) {
if (self->frame == self->duration) {
self->frame = 0;
self->duration = 0;
} else {
self->frame++;
self->color.r = time_line_next(&self->red_line);
self->color.g = time_line_next(&self->green_line);
self->color.b = time_line_next(&self->blue_line);
}
}
bool animation_running(animation_t *self) {
return self->frame != self->duration;
}
typedef struct {
sk9822_t lights;
color_scheme_e color_scheme;
animation_t animations[LIGHT_COUNT];
} lantern_t;
lantern_t lantern_new(sk9822_t lights) {
sk9822_init(&lights);
return (lantern_t){
.lights = lights,
.color_scheme = normal,
.animations = {
animation_new(),
animation_new(),
animation_new(),
}
};
}
void lantern_start_test(lantern_t *self) {
animation_begin(
&self->animations[0],
255,
0,
0,
120);
animation_begin(
&self->animations[1],
0,
255,
0,
120);
animation_begin(
&self->animations[2],
0,
0,
255,
120);
}
void lantern_start_normal(lantern_t *self, rng_t *rng) {
animation_begin(
&self->animations[0],
random_step(self->animations[0].color.r, 180, 255, rng),
random_step(self->animations[0].color.g, 20, 50, rng),
0,
FPS);
animation_begin(
&self->animations[1],
random_step(self->animations[1].color.r, 160, 230, rng),
random_step(self->animations[1].color.g, 10, 30, rng),
0,
FPS);
animation_begin(
&self->animations[2],
random_step(self->animations[2].color.r, 140, 170, rng),
random_step(self->animations[2].color.g, 0, 10, rng),
0,
FPS);
}
void lantern_set_mode(lantern_t *self, color_scheme_e scheme) {
self->color_scheme = scheme;
}
void lantern_step(lantern_t *self, rng_t *rng, rgb_t colors[LIGHT_COUNT]) {
if (!animation_running(&self->animations[0])) {
switch (self->color_scheme) {
case test:
lantern_start_test(self);
break;
case normal:
lantern_start_normal(self, rng);
break;
case creepy:
break;
case eerie:
break;
case flash:
break;
}
}
for (int i = 0; i < LIGHT_COUNT; i++) {
animation_step(&self->animations[i]);
colors[i] = self->animations[i].color;
}
}
void display_lantern(display_t *display, lantern_t *lantern) {
char msg1[20];
char msg2[20];
snprintf(msg1, 20, "[%d,%d] %x,%x,%x",
lantern->animations[0].frame,
lantern->animations[0].duration,
lantern->animations[0].color.r,
lantern->animations[0].color.g,
lantern->animations[0].color.b
);
snprintf(msg2, 20, "%x,%x,%x %x,%x,%x",
lantern->animations[1].color.r,
lantern->animations[1].color.g,
lantern->animations[1].color.b,
lantern->animations[2].color.r,
lantern->animations[2].color.g,
lantern->animations[2].color.b
);
display_clear(display);
display_write_message(display, msg1);
display_set_location(display, 1, 0);
display_write_message(display, msg2);
}
int main(void) {
dio_t status_light = { .ddr = &DDRC, .port = &PORTC, .pin = &PINC, .addr = 7 };
dio_set_direction(&status_light, LINE_OUT);
display_t display = {
.reg = {
.output = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 7 },
.shift_clock = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 6 },
.latch_clock = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 5 },
}
};
display_init(&display);
dio_t buttons[4] = {
{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 5 },
{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 6 },
{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 7 },
{ .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 6 },
};
for (int i = 0; i < 4; i++) {
dio_set_direction(&buttons[i], LINE_IN);
}
sk9822_t lights = {
.data_pin = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 1 },
.clock_pin = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 0 }
};
rgb_t colors[LIGHT_COUNT];
lantern_t lantern = lantern_new(lights);
lantern_set_mode(&lantern, test);
rng_t rng = rng_new(15);
display_clear(&display);
display_write_message(&display, "ready");
_delay_ms(5000);
display_lantern(&display, &lantern);
_delay_ms(1000);
lantern_step(&lantern, &rng, colors);
sk9822_send(&lights, colors, LIGHT_COUNT);
while(1) {
lantern_step(&lantern, &rng, colors);
sk9822_send(&lights, colors, LIGHT_COUNT);
display_lantern(&display, &lantern);
_delay_ms(FRAME_DELAY_MS);
}
/*
rgb_t colors[3] = {
{ .brightness = 1, .r = 128, .g = 0, .b = 0, },
{ .brightness = 1, .r = 0, .g = 128, .b = 0, },
{ .brightness = 1, .r = 0, .g = 0, .b = 128, },
};
*/
/*
sk9822_init(&lights);
sk9822_send(&lights, colors, 3);
int flash_recovery = 0;
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
while (1) {
if (flash_recovery == 0) {
uint8_t value = dio_read(&buttons[0]);
if (value != 0) {
flash_status(&status_light);
flash_recovery = 128;
}
} else {
colors[0] = (rgb_t){ .brightness = bound(flash_recovery / 4, 1, 31), .r = 128 + flash_recovery, .g = flash_recovery * 2, .b = flash_recovery * 2 },
colors[1] = (rgb_t){ .brightness = bound(flash_recovery / 4, 1, 31), .r = flash_recovery * 2, .g = 128 + flash_recovery, .b = flash_recovery * 2 },
colors[2] = (rgb_t){ .brightness = bound(flash_recovery / 4, 1, 31), .r = flash_recovery * 2, .g = flash_recovery * 2, .b = 128 + flash_recovery },
sk9822_send(&lights, colors, 3);
flash_recovery -= 2;
}
_delay_ms(ANIMATION_DELAY);
}
*/
return 0;
}
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