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/*
* Copyright 2020 Birte Kristina Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "arch.h"
#include "driver/neopixel.h"
#include "driver/stdin.h"
#include "driver/stdout.h"
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#define NUM_PIXELS 66
Adafruit_NeoPixel np(NUM_PIXELS, GPIO::pb0, NEO_GRB+NEO_KHZ800);
class Blinkencat {
public:
enum Mode : uint8_t {
OFF = 0,
RGBWHEEL_FAST,
RGBWHEEL_SLOW,
RGBFADE_FAST,
RGBFADE_SLOW,
BRIGHTRGBWHEEL_FAST,
BRIGHTRGBWHEEL_SLOW,
BRIGHTRGBFADE_FAST,
BRIGHTRGBFADE_SLOW,
COLD_WHITE,
STROBE,
COLOR_STROBE,
COLOR_RGB,
MODE_ENUM_MAX
};
Mode mode;
uint8_t red, green, blue;
void setup(void);
void next_mode(void);
void idle(void);
void loop(void);
Blinkencat() : mode(OFF) {}
};
void Blinkencat::setup(void)
{
np.setup();
gpio.input(GPIO::pb1, 0);
gpio.input(GPIO::pd3, 1);
gpio.enable_int(GPIO::pd3);
// One ADC conversion per four seconds
TCCR1A = 0;
TCCR1B = _BV(CS12) | _BV(CS10);
// Measure internal 1.1V bandgap using VCC as reference on each Timer 1 overflow
ADMUX = _BV(REFS0) | 0x0e;
ADCSRB = _BV(ADTS2) | _BV(ADTS1);
ADCSRA = _BV(ADEN) | _BV(ADATE) | _BV(ADPS2) | _BV(ADPS1);
}
void Blinkencat::idle(void)
{
SMCR = _BV(SE);
asm("sleep");
SMCR = 0;
}
void Blinkencat::next_mode(void)
{
mode = (Mode)((mode + 1) % MODE_ENUM_MAX);
}
void Blinkencat::loop(void)
{
static uint16_t rgbwheel_offset = 0;
static uint16_t rgbfade_hsv = 0;
static uint8_t strobe_on = 0;
/*
// not working due to bad logic levels
if (gpio.read(GPIO::pb1)) {
// Arduino and WS2812 strip are connected in parallel with the battery,
// which will significantly confuse the charging circuit when the
// strip is active while charging. So we make sure that it isn't.
mode = OFF;
}
*/
switch (mode) {
case OFF:
// the mode may have been set by an ISR, which may in turn have
// been handled immediately after an np.show() call. So we must
// observe the 300us idle time mandated by WS2812.
_delay_ms(1);
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.Color(0, 0, 0));
}
np.show();
idle();
break;
case RGBWHEEL_FAST:
case RGBWHEEL_SLOW:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
uint16_t hsv = (i * 252 + rgbwheel_offset) % 6553;
np.setPixelColor((NUM_PIXELS-1) - i, np.gamma32(np.ColorHSV(hsv * 10, 255, 127)));
}
rgbwheel_offset = (rgbwheel_offset + 10) % 6553;
np.show();
_delay_ms(1);
if (mode == RGBWHEEL_SLOW) {
_delay_ms(9);
}
break;
case RGBFADE_FAST:
case RGBFADE_SLOW:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.ColorHSV(rgbfade_hsv * 10, 255, 63));
}
rgbfade_hsv = (rgbfade_hsv + 10) % 6553;
np.show();
_delay_ms(1);
if (mode == RGBFADE_SLOW) {
_delay_ms(99);
}
break;
case BRIGHTRGBWHEEL_FAST:
case BRIGHTRGBWHEEL_SLOW:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
uint16_t hsv = (i * 252 + rgbwheel_offset) % 6553;
np.setPixelColor((NUM_PIXELS-1) - i, np.gamma32(np.ColorHSV(hsv * 10)));
}
rgbwheel_offset = (rgbwheel_offset + 10) % 6553;
np.show();
_delay_ms(1);
if (mode == BRIGHTRGBWHEEL_SLOW) {
_delay_ms(9);
}
break;
case BRIGHTRGBFADE_FAST:
case BRIGHTRGBFADE_SLOW:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.ColorHSV(rgbfade_hsv * 10));
}
rgbfade_hsv = (rgbfade_hsv + 10) % 6553;
np.show();
_delay_ms(1);
if (mode == BRIGHTRGBFADE_SLOW) {
_delay_ms(99);
}
break;
case COLD_WHITE:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.Color(127, 127, 127));
}
np.show();
idle();
break;
case STROBE:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.Color(strobe_on, strobe_on, strobe_on));
}
np.show();
strobe_on = 127 - strobe_on;
_delay_ms(40);
break;
case COLOR_STROBE:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
if (strobe_on) {
np.setPixelColor(i, np.ColorHSV(rgbfade_hsv * 10));
} else {
np.setPixelColor(i, np.Color(0, 0, 0));
}
}
rgbfade_hsv = (rgbfade_hsv + 50) % 6553;
np.show();
strobe_on = 127 - strobe_on;
_delay_ms(40);
break;
case COLOR_RGB:
for (uint16_t i = 0; i < NUM_PIXELS; i++) {
np.setPixelColor(i, np.Color(red, green, blue));
}
np.show();
idle();
break;
}
}
Blinkencat blinkencat;
int main(void)
{
char buf[3];
unsigned char buf_pos = sizeof(buf);
Blinkencat::Mode target_mode = blinkencat.OFF;
arch.setup();
gpio.setup();
kout.setup();
kin.setup();
blinkencat.setup();
while (1) {
kout << "loop - mode is " << blinkencat.mode << endl;
blinkencat.loop();
while (kin.hasKey()) {
char key = kin.getKey();
if (buf_pos < sizeof(buf)) {
buf[buf_pos] = key;
buf_pos++;
if (buf_pos == sizeof(buf)) {
blinkencat.red = buf[0];
blinkencat.green = buf[1];
blinkencat.blue = buf[2];
blinkencat.mode = target_mode;
}
}
else if ((key >= '0') && (key < '0' + blinkencat.MODE_ENUM_MAX)) {
blinkencat.mode = (Blinkencat::Mode)(key - '0');
}
else if (key == 'c') {
buf_pos = 0;
target_mode = blinkencat.COLOR_RGB;
}
}
if (ADCSRA & _BV(ADIF)) {
uint8_t adcr_l = ADCL;
uint8_t adcr_h = ADCH;
uint16_t adcr = adcr_l + (adcr_h << 8);
uint16_t vcc = 1100L * 1023 / adcr;
TIFR1 |= _BV(TOV1);
ADCSRA |= _BV(ADIF);
kout << "VCC = " << vcc << endl;
}
}
return 0;
}
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