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nodemcu-firmware/app/modules/ws2812_effects.c

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#include "module.h"
#include "lauxlib.h"
#include "lmem.h"
#include "platform.h"
#include "c_stdlib.h"
#include "c_math.h"
#include "c_string.h"
#include "user_interface.h"
#include "driver/uart.h"
#include "osapi.h"
#include "swTimer/swTimer.h"
#include "ws2812.h"
#include "color_utils.h"
#define CANARY_VALUE 0x32372132
#define DEFAULT_MODE 0
#define DEFAULT_COLOR 0xFF0000
#define UINT32_MAX 4294967295U
#define SPEED_MIN 0
#define SPEED_MAX 255
#define SPEED_DEFAULT 150
#define DELAY_DEFAULT 100
#define BRIGHTNESS_MIN 0
#define BRIGHTNESS_MAX 255
#define BRIGHTNESS_DEFAULT 100
#define EFFECT_PARAM_INVALID -10000
#define LIBRARY_NOT_INITIALIZED_ERROR_MSG "please call init() first"
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
#define abs(a) ((a) > 0 ? (a) : (0-a))
#define min3(a,b, c) min((a), min((b), (c)))
#define max3(a,b, c) max((a), max((b), (c)))
typedef struct {
ws2812_buffer *buffer;
int buffer_ref;
uint32_t mode_delay;
uint32_t counter_mode_call;
uint32_t counter_mode_step;
uint8_t mode_color_index;
uint8_t speed;
uint8_t brightness;
os_timer_t os_t;
uint8_t running;
uint8_t effect_type;
uint8_t color[4];
int effect_int_param1;
} ws2812_effects;
enum ws2812_effects_type {
WS2812_EFFECT_STATIC,
WS2812_EFFECT_BLINK,
WS2812_EFFECT_GRADIENT,
WS2812_EFFECT_GRADIENT_RGB,
WS2812_EFFECT_RANDOM_COLOR,
WS2812_EFFECT_RAINBOW,
WS2812_EFFECT_RAINBOW_CYCLE,
WS2812_EFFECT_FLICKER,
WS2812_EFFECT_FIRE_FLICKER,
WS2812_EFFECT_FIRE_FLICKER_SOFT,
WS2812_EFFECT_FIRE_FLICKER_INTENSE,
WS2812_EFFECT_HALLOWEEN,
WS2812_EFFECT_CIRCUS_COMBUSTUS,
WS2812_EFFECT_LARSON_SCANNER,
WS2812_EFFECT_CYCLE,
WS2812_EFFECT_COLOR_WIPE,
WS2812_EFFECT_RANDOM_DOT
};
static ws2812_effects *state;
//-----------------
// UTILITY METHODS
//-----------------
static int ws2812_write(ws2812_buffer* buffer) {
size_t length1, length2;
const char *buffer1, *buffer2;
buffer1 = 0;
length1 = 0;
buffer1 = buffer->values;
length1 = buffer->colorsPerLed*buffer->size;
buffer2 = 0;
length2 = 0;
// Send the buffers
ws2812_write_data(buffer1, length1, buffer2, length2);
return 0;
}
static int ws2812_set_pixel(int pixel, uint32_t color) {
ws2812_buffer * buffer = state->buffer;
uint8_t g = ((color & 0x00FF0000) >> 16);
uint8_t r = ((color & 0x0000FF00) >> 8);
uint8_t b = (color & 0x000000FF);
uint8_t w = buffer->colorsPerLed == 4 ? ((color & 0xFF000000) >> 24) : 0;
int offset = pixel * buffer->colorsPerLed;
buffer->values[offset] = g;
buffer->values[offset+1] = r;
buffer->values[offset+2] = b;
if (buffer->colorsPerLed == 4) {
buffer->values[offset+3] = w;
}
return 0;
}
/*
* Returns a new, random color wheel index with a minimum distance of 42 from pos.
*/
static uint8_t get_random_wheel_index(uint8_t pos)
{
uint8_t r = 0;
uint8_t x = 0;
uint8_t y = 0;
uint8_t d = 0;
while(d < 42) {
r = rand() % 360;
x = abs(pos - r);
y = 360 - x;
d = min(x, y);
}
return r;
}
//-----------------
// EFFECTS LIBRARY
//-----------------
/**
* initialized ws2812_effects with the buffer to use
*/
static int ws2812_effects_init(lua_State *L) {
ws2812_buffer * buffer = (ws2812_buffer*)luaL_checkudata(L, 1, "ws2812.buffer");
luaL_argcheck(L, buffer != NULL, 1, "no valid buffer provided");
// get rid of old state
if (state != NULL) {
luaL_unref(L, LUA_REGISTRYINDEX, state->buffer_ref);
os_free((void *) state);
}
// Allocate memory and set all to zero
size_t size = sizeof(ws2812_effects) + buffer->colorsPerLed*sizeof(uint8_t);
state = (ws2812_effects *) os_zalloc(size);
// initialize
state->speed = SPEED_DEFAULT;
state->mode_delay = DELAY_DEFAULT;
state->brightness = BRIGHTNESS_DEFAULT;
state->buffer = buffer;
state->buffer_ref = luaL_ref(L, LUA_REGISTRYINDEX);
return 0;
}
/*
* set color for single color effects
*/
static int ws2812_effects_set_color(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
uint8_t g = luaL_checkinteger(L, 1);
uint8_t r = luaL_checkinteger(L, 2);
uint8_t b = luaL_checkinteger(L, 3);
uint8_t w = luaL_optinteger(L, 4, 0 );
state->color[0] = g;
state->color[1] = r;
state->color[2] = b;
state->color[3] = w;
return 0;
}
static int ws2812_effects_get_speed(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
lua_pushnumber(L, state->speed);
return 1;
}
static int ws2812_effects_set_speed(lua_State* L) {
uint8_t speed = luaL_checkinteger(L, 1);
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
luaL_argcheck(L, speed >= 0 && speed <= 255, 1, "should be a 0-255");
state->speed = speed;
state->mode_delay = 10;
return 0;
}
static int ws2812_effects_get_delay(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
lua_pushnumber(L, state->mode_delay);
return 1;
}
static int ws2812_effects_set_delay(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
const int delay = luaL_checkinteger(L, 1);
luaL_argcheck(L, delay >= 10, 1, "must be equal / larger than 10");
state->mode_delay = delay;
state->speed = 0;
return 1;
}
static int ws2812_effects_set_brightness(lua_State* L) {
uint8_t brightness = luaL_checkint(L, 1);
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
luaL_argcheck(L, brightness >= 0 && brightness < 256, 1, "should be a 0-255");
state->brightness = brightness;
return 0;
}
static int ws2812_effects_fill_buffer(uint32_t color) {
ws2812_buffer * buffer = state->buffer;
uint8_t g = ((color & 0x00FF0000) >> 16);
uint8_t r = ((color & 0x0000FF00) >> 8);
uint8_t b = (color & 0x000000FF);
uint8_t w = buffer->colorsPerLed == 4 ? ((color & 0xFF000000) >> 24) : 0;
// Fill buffer
int i;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
*p++ = g * state->brightness / 255;
*p++ = r * state->brightness / 255;
*p++ = b * state->brightness / 255;
if (buffer->colorsPerLed == 4) {
*p++ = w * state->brightness / 255;
}
}
return 0;
}
//------------------
// basic methods
//------------------
/*
* Cycles all LEDs at once through a rainbow.
*/
static int ws2812_effects_fill_color() {
uint8_t g = state->color[0];
uint8_t r = state->color[1];
uint8_t b = state->color[2];
uint8_t w = state->color[3];
uint32_t color = (w << 24) | (g << 16) | (r << 8) | b;
ws2812_effects_fill_buffer(color);
return 0;
}
//-----------------
// EFFECFTS
//-----------------
/*
* blink with set color
*/
static int ws2812_effects_mode_blink() {
if(state->counter_mode_call % 2 == 1) {
// on
ws2812_effects_fill_color();
}
else {
// off
ws2812_buffer * buffer = state->buffer;
c_memset(&buffer->values[0], 0, buffer->size * buffer->colorsPerLed);
}
return 0;
}
static int ws2812_effects_gradient(const char *gradient_spec, size_t length1) {
ws2812_buffer * buffer = state->buffer;
int segments = (length1 / buffer->colorsPerLed) - 1;
int segmentSize = buffer->size / segments;
uint8_t g1, r1, b1, g2, r2, b2;
int i,j,k;
g2 = *gradient_spec++;
r2 = *gradient_spec++;
b2 = *gradient_spec++;
// skip non-rgb components
for (j = 3; j < buffer->colorsPerLed; j++)
{
*gradient_spec++;
}
// reference to buffer memory
uint8_t * p = &buffer->values[0];
uint16_t h1,h2;
uint8_t s,v,s1,v1,s2,v2;
for (k = 0; k < segments; k++) {
g1 = g2;
r1 = r2;
b1 = b2;
uint32_t hsv1 = grb2hsv(g1, r1, b1);
h1 = (hsv1 & 0xFFFF0000) >> 16;
s1 = (hsv1 & 0x0000FF00) >> 8;
v1 = (hsv1 & 0x000000FF);
g2 = *gradient_spec++;
r2 = *gradient_spec++;
b2 = *gradient_spec++;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*gradient_spec++;
}
uint32_t hsv2 = grb2hsv(g2, r2, b2);
h2 = (hsv2 & 0xFFFF0000) >> 16;
s2 = (hsv1 & 0x0000FF00) >> 8;
v2 = (hsv1 & 0x000000FF);
// get distance and direction to use
int maxCCW = h1 > h2 ? h1 - h2 : 360 + h1 - h2;
int maxCW = h1 > h2 ? 360 + h2 - h1 : h2 - h1;
// Fill buffer
int numPixels = segmentSize;
// make sure we fill the strip correctly in case of rounding errors
if (k == segments - 1) {
numPixels = buffer->size - (segmentSize * (segments - 1));
}
int steps = numPixels - 1;
for(i = 0; i < numPixels; i++) {
// calculate HSV values
//h = h1 + ((h2-h1) * i / fillSize);
int h = maxCCW > maxCW ? h1 + ((maxCW * i / steps) % 360) : h1 - (maxCCW * i / steps);
if (h < 0) h = h + 360;
if (h > 359) h = h - 360;
s = s1 + ((s2-s1) * i / steps);
v = v1 + ((v2-v1) * i / steps);
// convert to RGB
uint32_t grb = hsv2grb(h, s, v);
*p++ = ((grb & 0x00FF0000) >> 16) * state->brightness / 255;
*p++ = ((grb & 0x0000FF00) >> 8) * state->brightness / 255;
*p++ = (grb & 0x000000FF) * state->brightness / 255;
for (j = 3; j < buffer->colorsPerLed; j++) {
*p++ = 0;
}
}
}
return 0;
}
static int ws2812_effects_gradient_rgb(const char *buffer1, size_t length1) {
ws2812_buffer * buffer = state->buffer;
int segments = (length1 / buffer->colorsPerLed) - 1;
int segmentSize = buffer->size / segments;
uint8_t g1, r1, b1, g2, r2, b2;
int i,j,k;
g2 = *buffer1++;
r2 = *buffer1++;
b2 = *buffer1++;
// skip non-rgb components
for (j = 3; j < buffer->colorsPerLed; j++)
{
*buffer1++;
}
// reference to buffer memory
uint8_t * p = &buffer->values[0];
for (k = 0; k < segments; k++) {
g1 = g2;
r1 = r2;
b1 = b2;
g2 = *buffer1++;
r2 = *buffer1++;
b2 = *buffer1++;
for (j = 3; j < buffer->colorsPerLed; j++) {
*buffer1++;
}
// Fill buffer
int numPixels = segmentSize;
// make sure we fill the strip correctly in case of rounding errors
if (k == segments - 1) {
numPixels = buffer->size - (segmentSize * (segments - 1));
}
int steps = numPixels - 1;
for(i = 0; i < numPixels; i++) {
*p++ = (g1 + ((g2-g1) * i / steps)) * state->brightness / 255;
*p++ = (r1 + ((r2-r1) * i / steps)) * state->brightness / 255;
*p++ = (b1 + ((b2-b1) * i / steps)) * state->brightness / 255;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
}
return 0;
}
/*
* Lights all LEDs in one random color up. Then switches them
* to the next random color.
*/
static int ws2812_effects_mode_random_color() {
state->mode_color_index = get_random_wheel_index(state->mode_color_index);
ws2812_buffer * buffer = state->buffer;
uint32_t color = color_wheel(state->mode_color_index);
uint8_t r = ((color & 0x00FF0000) >> 16) * state->brightness / 255;
uint8_t g = ((color & 0x0000FF00) >> 8) * state->brightness / 255;
uint8_t b = ((color & 0x000000FF) >> 0) * state->brightness / 255;
// Fill buffer
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
*p++ = g;
*p++ = r;
*p++ = b;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
}
/*
* Cycles all LEDs at once through a rainbow.
*/
static int ws2812_effects_mode_rainbow() {
ws2812_buffer * buffer = state->buffer;
uint32_t color = color_wheel(state->counter_mode_step);
uint8_t r = (color & 0x00FF0000) >> 16;
uint8_t g = (color & 0x0000FF00) >> 8;
uint8_t b = (color & 0x000000FF) >> 0;
// Fill buffer
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
*p++ = g * state->brightness / 255;
*p++ = r * state->brightness / 255;
*p++ = b * state->brightness / 255;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
state->counter_mode_step = (state->counter_mode_step + 1) % 360;
return 0;
}
/*
* Cycles a rainbow over the entire string of LEDs.
*/
static int ws2812_effects_mode_rainbow_cycle(int repeat_count) {
ws2812_buffer * buffer = state->buffer;
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
uint16_t wheel_index = (i * 360 / buffer->size * repeat_count) % 360;
uint32_t color = color_wheel(wheel_index);
uint8_t r = ((color & 0x00FF0000) >> 16) * state->brightness / 255;
uint8_t g = ((color & 0x0000FF00) >> 8) * state->brightness / 255;
uint8_t b = ((color & 0x000000FF) >> 0) * state->brightness / 255;
*p++ = g;
*p++ = r;
*p++ = b;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
return 0;
}
/*
* Random flickering.
*/
static int ws2812_effects_mode_flicker_int(uint8_t max_flicker) {
ws2812_buffer * buffer = state->buffer;
uint8_t p_g = state->color[0];
uint8_t p_r = state->color[1];
uint8_t p_b = state->color[2];
// Fill buffer
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
int flicker = rand() % (max_flicker > 0 ? max_flicker : 1);
int r1 = p_r-flicker;
int g1 = p_g-flicker;
int b1 = p_b-flicker;
if(g1<0) g1=0;
if(r1<0) r1=0;
if(b1<0) b1=0;
*p++ = g1 * state->brightness / 255;
*p++ = r1 * state->brightness / 255;
*p++ = b1 * state->brightness / 255;
for (j = 3; j < buffer->colorsPerLed; j++) {
*p++ = 0;
}
}
return 0;
}
/**
* Halloween effect
*/
static int ws2812_effects_mode_halloween() {
ws2812_buffer * buffer = state->buffer;
int g1 = 50 * state->brightness / 255;
int r1 = 255 * state->brightness / 255;
int b1 = 0 * state->brightness / 255;
int g2 = 0 * state->brightness / 255;
int r2 = 255 * state->brightness / 255;
int b2 = 130 * state->brightness / 255;
// Fill buffer
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
*p++ = (i % 4 < 2) ? g1 : g2;
*p++ = (i % 4 < 2) ? r1 : r2;
*p++ = (i % 4 < 2) ? b1 : b2;
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
return 0;
}
static int ws2812_effects_mode_circus_combustus() {
ws2812_buffer * buffer = state->buffer;
int g1 = 0 * state->brightness / 255;
int r1 = 255 * state->brightness / 255;
int b1 = 0 * state->brightness / 255;
int g2 = 255 * state->brightness / 255;
int r2 = 255 * state->brightness / 255;
int b2 = 255 * state->brightness / 255;
// Fill buffer
int i,j;
uint8_t * p = &buffer->values[0];
for(i = 0; i < buffer->size; i++) {
if (i % 6 < 2) {
*p++ = g1;
*p++ = r1;
*p++ = b1;
}
else if (i % 6 < 4) {
*p++ = g2;
*p++ = r2;
*p++ = b2;
}
else {
*p++ = 0;
*p++ = 0;
*p++ = 0;
}
for (j = 3; j < buffer->colorsPerLed; j++)
{
*p++ = 0;
}
}
return 0;
}
/*
* K.I.T.T.
*/
static int ws2812_effects_mode_larson_scanner() {
ws2812_buffer * buffer = state->buffer;
int led_index = 0;
for(int i=0; i < buffer->size * buffer->colorsPerLed; i++) {
buffer->values[i] = buffer->values[i] >> 1;
}
uint16_t pos = 0;
if(state->counter_mode_step < buffer->size) {
pos = state->counter_mode_step;
} else {
pos = (buffer->size * 2) - state->counter_mode_step - 2;
}
pos = pos * buffer->colorsPerLed;
buffer->values[pos + 1] = state->color[1];
buffer->values[pos] = state->color[0];
buffer->values[pos + 2] = state->color[2];
state->counter_mode_step = (state->counter_mode_step + 1) % ((buffer->size * 2) - 2);
}
static int ws2812_effects_mode_color_wipe() {
ws2812_buffer * buffer = state->buffer;
int led_index = (state->counter_mode_step % buffer->size) * buffer->colorsPerLed;
if (state->counter_mode_step >= buffer->size)
{
buffer->values[led_index] = 0;
buffer->values[led_index + 1] = 0;
buffer->values[led_index + 2] = 0;
}
else
{
uint8_t px_r = state->color[1] * state->brightness / 255;
uint8_t px_g = state->color[0] * state->brightness / 255;
uint8_t px_b = state->color[2] * state->brightness / 255;
buffer->values[led_index] = px_g;
buffer->values[led_index + 1] = px_r;
buffer->values[led_index + 2] = px_b;
}
state->counter_mode_step = (state->counter_mode_step + 1) % (buffer->size * 2);
}
static int ws2812_effects_mode_random_dot(uint8_t dots) {
ws2812_buffer * buffer = state->buffer;
// fade out
for(int i=0; i < buffer->size * buffer->colorsPerLed; i++) {
buffer->values[i] = buffer->values[i] >> 1;
}
for(int i=0; i < dots; i++) {
// pick random pixel
int led_index = rand() % buffer->size;
uint32_t color = (state->color[0] << 16) | (state->color[1] << 8) | state->color[2];
if (buffer->colorsPerLed == 4) {
color = color | (state->color[3] << 24);
}
ws2812_set_pixel(led_index, color);
}
state->counter_mode_step = (state->counter_mode_step + 1) % ((buffer->size * 2) - 2);
}
static uint32_t ws2812_effects_mode_delay()
{
// check if delay has been set explicitly
if (state->speed == 0 && state->mode_delay > 0)
{
return state->mode_delay;
}
uint32_t delay = 10;
switch (state->effect_type) {
case WS2812_EFFECT_BLINK:
case WS2812_EFFECT_RAINBOW:
case WS2812_EFFECT_RAINBOW_CYCLE:
delay = 10 + ((1000 * (uint32_t)(SPEED_MAX - state->speed)) / SPEED_MAX);
break;
case WS2812_EFFECT_FLICKER:
case WS2812_EFFECT_FIRE_FLICKER:
case WS2812_EFFECT_FIRE_FLICKER_SOFT:
case WS2812_EFFECT_FIRE_FLICKER_INTENSE:
delay = 30 + (rand() % 100) + (200 * (SPEED_MAX - state->speed) / SPEED_MAX);
break;
case WS2812_EFFECT_RANDOM_COLOR:
case WS2812_EFFECT_HALLOWEEN:
case WS2812_EFFECT_CIRCUS_COMBUSTUS:
case WS2812_EFFECT_LARSON_SCANNER:
case WS2812_EFFECT_CYCLE:
case WS2812_EFFECT_COLOR_WIPE:
case WS2812_EFFECT_RANDOM_DOT:
delay = 10 + ((1000 * (uint32_t)(SPEED_MAX - state->speed)) / SPEED_MAX);
break;
}
return delay;
}
/**
* run loop for the effects.
*/
static void ws2812_effects_loop(void *p)
{
if (state->effect_type == WS2812_EFFECT_BLINK)
{
ws2812_effects_mode_blink();
}
else if (state->effect_type == WS2812_EFFECT_RAINBOW)
{
ws2812_effects_mode_rainbow();
}
else if (state->effect_type == WS2812_EFFECT_RAINBOW_CYCLE)
{
// the rainbow cycle effect can be achieved by shifting the buffer
ws2812_buffer_shift(state->buffer, 1, SHIFT_CIRCULAR, 1, -1);
}
else if (state->effect_type == WS2812_EFFECT_FLICKER)
{
int flicker_value = state->effect_int_param1 != EFFECT_PARAM_INVALID ? state->effect_int_param1 : 100;
if (flicker_value == 0) {
flicker_value = 50;
}
ws2812_effects_mode_flicker_int(flicker_value);
state->counter_mode_step = (state->counter_mode_step + 1) % 256;
}
else if (state->effect_type == WS2812_EFFECT_FIRE_FLICKER)
{
ws2812_effects_mode_flicker_int(110);
state->counter_mode_step = (state->counter_mode_step + 1) % 256;
}
else if (state->effect_type == WS2812_EFFECT_FIRE_FLICKER_SOFT)
{
ws2812_effects_mode_flicker_int(70);
state->counter_mode_step = (state->counter_mode_step + 1) % 256;
}
else if (state->effect_type == WS2812_EFFECT_FIRE_FLICKER_INTENSE)
{
ws2812_effects_mode_flicker_int(170);
state->counter_mode_step = (state->counter_mode_step + 1) % 256;
}
else if (state->effect_type == WS2812_EFFECT_RANDOM_COLOR)
{
ws2812_effects_mode_random_color();
}
else if (state->effect_type == WS2812_EFFECT_HALLOWEEN)
{
ws2812_buffer_shift(state->buffer, 1, SHIFT_CIRCULAR, 1, -1);
}
else if (state->effect_type == WS2812_EFFECT_CIRCUS_COMBUSTUS)
{
ws2812_buffer_shift(state->buffer, 1, SHIFT_CIRCULAR, 1, -1);
}
else if (state->effect_type == WS2812_EFFECT_LARSON_SCANNER)
{
ws2812_effects_mode_larson_scanner();
}
else if (state->effect_type == WS2812_EFFECT_CYCLE)
{
ws2812_buffer_shift(state->buffer, state->effect_int_param1, SHIFT_CIRCULAR, 1, -1);
}
else if (state->effect_type == WS2812_EFFECT_COLOR_WIPE)
{
ws2812_effects_mode_color_wipe();
}
else if (state->effect_type == WS2812_EFFECT_RANDOM_DOT)
{
uint8_t dots = state->effect_int_param1 != EFFECT_PARAM_INVALID ? state->effect_int_param1 : 1;
ws2812_effects_mode_random_dot(dots);
}
// set the new delay for this effect
state->mode_delay = ws2812_effects_mode_delay();
// call count
state->counter_mode_call = (state->counter_mode_call + 1) % UINT32_MAX;
// write the buffer
ws2812_write(state->buffer);
// set the timer
if (state->running == 1 && state->mode_delay >= 10)
{
os_timer_disarm(&(state->os_t));
os_timer_arm(&(state->os_t), state->mode_delay, FALSE);
}
}
/**
* Set the active effect mode
*/
static int ws2812_effects_set_mode(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
// opts must be same order as effect type enum
static const char * const opts[] = {"static", "blink", "gradient", "gradient_rgb", "random_color", "rainbow",
"rainbow_cycle", "flicker", "fire", "fire_soft", "fire_intense", "halloween", "circus_combustus",
"larson_scanner", "cycle", "color_wipe", "random_dot", NULL};
int type = luaL_checkoption(L, 1, NULL, opts);
state->effect_type = type;
int effect_param = EFFECT_PARAM_INVALID;
// check additional int parameter
// First mandatory parameter
int arg_type = lua_type(L, 2);
if (arg_type == LUA_TNONE || arg_type == LUA_TNIL)
{
// we don't have a second parameter
}
else if(arg_type == LUA_TNUMBER)
{
effect_param = luaL_optinteger( L, 2, EFFECT_PARAM_INVALID );
}
// initialize the effect
state->counter_mode_step = 0;
switch (state->effect_type) {
case WS2812_EFFECT_STATIC:
// fill with currently set color
ws2812_effects_fill_color();
state->mode_delay = 250;
break;
case WS2812_EFFECT_BLINK:
ws2812_effects_mode_blink();
break;
case WS2812_EFFECT_GRADIENT:
if(arg_type == LUA_TSTRING)
{
size_t length1;
const char *buffer1 = lua_tolstring(L, 2, &length1);
if ((length1 / state->buffer->colorsPerLed < 2) || (length1 % state->buffer->colorsPerLed != 0))
{
luaL_argerror(L, 2, "must be at least two colors and same size as buffer colors");
}
ws2812_effects_gradient(buffer1, length1);
ws2812_write(state->buffer);
}
else
{
luaL_argerror(L, 2, "string expected");
}
break;
case WS2812_EFFECT_GRADIENT_RGB:
if(arg_type == LUA_TSTRING)
{
size_t length1;
const char *buffer1 = lua_tolstring(L, 2, &length1);
if ((length1 / state->buffer->colorsPerLed < 2) || (length1 % state->buffer->colorsPerLed != 0))
{
luaL_argerror(L, 2, "must be at least two colors and same size as buffer colors");
}
ws2812_effects_gradient_rgb(buffer1, length1);
ws2812_write(state->buffer);
}
else
{
luaL_argerror(L, 2, "string expected");
}
break;
case WS2812_EFFECT_RANDOM_COLOR:
ws2812_effects_mode_random_color();
break;
case WS2812_EFFECT_RAINBOW:
ws2812_effects_mode_rainbow();
break;
case WS2812_EFFECT_RAINBOW_CYCLE:
ws2812_effects_mode_rainbow_cycle(effect_param != EFFECT_PARAM_INVALID ? effect_param : 1);
break;
// flicker
case WS2812_EFFECT_FLICKER:
state->effect_int_param1 = effect_param;
break;
case WS2812_EFFECT_FIRE_FLICKER:
case WS2812_EFFECT_FIRE_FLICKER_SOFT:
case WS2812_EFFECT_FIRE_FLICKER_INTENSE:
{
state->color[0] = 255-40;
state->color[1] = 255;
state->color[2] = 40;
state->color[3] = 0;
}
break;
case WS2812_EFFECT_HALLOWEEN:
ws2812_effects_mode_halloween();
break;
case WS2812_EFFECT_CIRCUS_COMBUSTUS:
ws2812_effects_mode_circus_combustus();
break;
case WS2812_EFFECT_LARSON_SCANNER:
ws2812_effects_mode_larson_scanner();
break;
case WS2812_EFFECT_CYCLE:
if (effect_param != EFFECT_PARAM_INVALID) {
state->effect_int_param1 = effect_param;
}
break;
case WS2812_EFFECT_COLOR_WIPE:
{
uint32_t black = 0;
ws2812_effects_fill_buffer(black);
ws2812_effects_mode_color_wipe();
break;
}
case WS2812_EFFECT_RANDOM_DOT:
{
// check if more than 1 dot shall be set
state->effect_int_param1 = effect_param;
uint32_t black = 0;
ws2812_effects_fill_buffer(black);
break;
}
}
}
/*
* Start the effect execution
*/
static int ws2812_effects_start(lua_State* L) {
//NODE_DBG("pin:%d, level:%d \n", pin, level);
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
if (state != NULL) {
os_timer_disarm(&(state->os_t));
state->running = 1;
state->counter_mode_call = 0;
state->counter_mode_step = 0;
// set the timer
os_timer_setfn(&(state->os_t), ws2812_effects_loop, NULL);
os_timer_arm(&(state->os_t), state->mode_delay, FALSE);
}
return 0;
}
/*
* Stop the effect execution
*/
static int ws2812_effects_stop(lua_State* L) {
luaL_argcheck(L, state != NULL, 1, LIBRARY_NOT_INITIALIZED_ERROR_MSG);
if (state != NULL) {
os_timer_disarm(&(state->os_t));
state->running = 0;
}
return 0;
}
static int ws2812_effects_tostring(lua_State* L) {
luaL_Buffer result;
luaL_buffinit(L, &result);
luaL_addchar(&result, '[');
luaL_addstring(&result, "effects");
luaL_addchar(&result, ']');
luaL_pushresult(&result);
return 1;
}
static const LUA_REG_TYPE ws2812_effects_map[] =
{
{ LSTRKEY( "init" ), LFUNCVAL( ws2812_effects_init )},
{ LSTRKEY( "set_brightness" ), LFUNCVAL( ws2812_effects_set_brightness )},
{ LSTRKEY( "set_color" ), LFUNCVAL( ws2812_effects_set_color )},
{ LSTRKEY( "set_speed" ), LFUNCVAL( ws2812_effects_set_speed )},
{ LSTRKEY( "set_delay" ), LFUNCVAL( ws2812_effects_set_delay )},
{ LSTRKEY( "set_mode" ), LFUNCVAL( ws2812_effects_set_mode )},
{ LSTRKEY( "start" ), LFUNCVAL( ws2812_effects_start )},
{ LSTRKEY( "stop" ), LFUNCVAL( ws2812_effects_stop )},
{ LSTRKEY( "get_delay" ), LFUNCVAL( ws2812_effects_get_delay )},
{ LSTRKEY( "get_speed" ), LFUNCVAL( ws2812_effects_get_speed )},
{ LSTRKEY( "__index" ), LROVAL( ws2812_effects_map )},
{ LSTRKEY( "__tostring" ), LFUNCVAL( ws2812_effects_tostring )},
{ LNILKEY, LNILVAL}
};
NODEMCU_MODULE(WS2812_EFFECTS, "ws2812_effects", ws2812_effects_map, NULL);
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