avr/lantern/main.c

167 lines
5.3 KiB
C

/*
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 <avr/interrupt.h>
#include <avr/sleep.h>
#include <dio.h>
#include <display.h>
#include "lantern.h"
#include <rfm.h>
#include <sk9822.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define FPS 15
#define TICKS_PER_SECOND 7812
#define FPS_TIMEOUT TICKS_PER_SECOND / FPS
#define PULSE_OFF_COUNT FPS * 5
#define PULSE_ON_COUNT 5
typedef struct {
bool frame_timeout;
} status_flags_t;
status_flags_t status_flags;
ISR(TIMER1_COMPA_vect) {
status_flags.frame_timeout = true;
}
ISR(INT6_vect) {
}
void setup_fps_timer(void) {
// WGM = 0100: CTC with OCR1nA top
// CS = 101: clock / 1024
TCCR1A = 0;
TCCR1B = _BV(3) | _BV(2) | _BV(0);
// Set the top for the counter
OCR1AH = FPS_TIMEOUT >> 8;
OCR1AL = FPS_TIMEOUT & 0xff;
// Enable compare on A match interrupt
TIMSK1 |= _BV(1);
}
int main(void) {
EIMSK = 1 << INT6 | 1 << INT2;
EICRA |= 1 << ISC21 | 1 << ISC20;
EICRB |= 1 << ISC61 | 1 << ISC60;
status_flags.frame_timeout = false;
// Disable unneeded modules
PRR0 = _BV(7) | _BV(5) | _BV(2);
PRR1 = _BV(7) | _BV(4) | _BV(3) | _BV(0);
rfm_t radio = (rfm_t){
.spi = {
.clock = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 1 },
.data_out = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 2 },
.data_in = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 3 },
.chip_select = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 4 },
},
.irq = { .ddr = &DDRE, .port = &PORTE, .pin = &PINE, .addr = 6 },
.reset = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 4 },
};
rfm_error_e error;
rfm_init(&radio, (uint8_t [4]){ 0xde, 0xca, 0xfb, 0xad }, 4, &error);
rfm_listen(&radio);
sk9822_t lights = {
.clock_pin = { .ddr = &DDRC, .port = &PORTC, .pin = &PINC, .addr = 7 },
.data_pin = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 6 }
};
rgb_t colors[LIGHT_COUNT];
rgb_t off[LIGHT_COUNT] = {
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
};
/*
rgb_t error_indicator[LIGHT_COUNT] = {
{ .brightness = 1, .r = 255, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
{ .brightness = 0, .r = 0, .g = 0, .b = 0 },
};
*/
sk9822_send(&lights, off, LIGHT_COUNT);
_delay_ms(500);
lantern_t lantern = lantern_new(lights);
lantern_set_mode(&lantern, normal);
lantern_step(&lantern, colors);
sk9822_send(&lights, colors, LIGHT_COUNT);
setup_fps_timer();
set_sleep_mode(SLEEP_MODE_IDLE);
while(1) {
if (status_flags.frame_timeout) {
status_flags.frame_timeout = false;
lantern_step(&lantern, colors);
sk9822_send(&lights, colors, LIGHT_COUNT);
}
interrupt_flags_t flags = rfm_interrupts(&radio);
while (flags.fifo_not_empty) {
/*
sk9822_send(&lights, off, LIGHT_COUNT);
_delay_ms(100);
*/
char msg[60] = "";
uint8_t length;
rfm_receive(&radio, (uint8_t *)msg, &length);
if (length == strlen("normal") + 1 && !strncmp(msg, "normal", length)) {
lantern_set_mode(&lantern, normal);
} else if (length == strlen("spooky") + 1 && !strncmp(msg, "spooky", length)) {
lantern_set_mode(&lantern, spooky);
} else if (length == strlen("eerie") + 1 && !strncmp(msg, "eerie", length)) {
lantern_set_mode(&lantern, eerie);
/*
} else {
sk9822_send(&lights, error_indicator, LIGHT_COUNT);
_delay_ms(500);
*/
}
flags = rfm_interrupts(&radio);
}
sei();
sleep_mode();
cli();
}
return 0;
}