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main.c
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main.c
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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <math.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <net/if.h>
#include "rpi_ws281x/ws2811.h"
#define TRUE 1
#define FALSE 0
#define FONT5X8 1
#define FONT5X5 2
#define TARGET_FREQ WS2811_TARGET_FREQ
#define GPIO_PIN0 18
#define GPIO_PIN1 19
#define DMA 10
#define PIDFILE "/var/run/rpilights.pid"
#define HOLIDAYS "/home/pi/rpilights/.holidays" // Location of holiday definitions file
#define TEMPERATURE "/dev/shm/.temperature" // Location of temperature file
#define FORECAST "/dev/shm/.forecast" // Location of weather forecast file
#define MESSAGES5x8 "/home/pi/rpilights/.messages5x8" // Location of messages for 1st line of display
#define MESSAGES5x5 "/home/pi/rpilights/.messages5x5" // Location of messages for 2nd line of display
#define MAP "/home/pi/rpilights/map.txt" // Location of LED map file
#define COMMAND "/home/pi/rpilights/.command" // Location of previous animation file
#define INT 50 // LED intensity (0 to 255) normally 50
#define RED RGB(255, 0, 0)
#define DARKRED RGB(128, 0, 0)
#define LIGHTRED RGB(255, 85, 85)
#define GREEN RGB(0, 255, 0)
#define DARKGREEN RGB(0, 128, 0)
#define LIGHTGREEN RGB(85, 255, 85)
#define BLUE RGB(0, 0, 255)
#define DARKBLUE RGB(0, 0, 128)
#define LIGHTBLUE RGB(85, 85, 255)
#define CYAN RGB(0, 255, 255)
#define MAGENTA RGB(255, 0, 255)
#define YELLOW RGB(255, 255, 0)
#define ORANGE RGB(255, 128, 0)
#define PURPLE RGB(128, 0, 128)
#define PINK RGB(255, 0, 128)
#define BLACK RGB(0, 0, 0)
#define WHITE RGB(255, 255, 255)
#define GRAY RGB(128, 128, 128)
int16_t width = 0;
int16_t height = 0;
int16_t nline1 = 0;
int16_t nline2 = 0;
int16_t *ledmap = NULL;
uint32_t *ledvalues = NULL;
uint8_t command[128];
ws2811_t ledstring = {
.freq = TARGET_FREQ,
.dmanum = DMA,
.channel = {
[0] = {
.gpionum = 0,
.count = 0,
.invert = 0,
.brightness = 0,
},
[1] = {
.gpionum = 0,
.count = 0,
.invert = 0,
.brightness = 0
},
},
};
// 5x5 font
static const uint8_t font5x5[] = {
0x00,0x00,0x00,0x00,0x00, // (space)
0x38,0x44,0x7c,0x44,0x44, // A
0x78,0x44,0x78,0x44,0x78, // B
0x3C,0x40,0x40,0x40,0x3C, // C
0x78,0x44,0x44,0x44,0x78, // D
0x7c,0x40,0x78,0x40,0x7c, // E
0x7c,0x40,0x70,0x40,0x40, // F
0x3c,0x40,0x4c,0x44,0x38, // G
0x44,0x44,0x7c,0x44,0x44, // H
0x40,0x40,0x40,0x40,0x40, // I
0x04,0x04,0x04,0x44,0x38, // J
0x44,0x48,0x70,0x48,0x44, // K
0x40,0x40,0x40,0x40,0x7c, // L
0x44,0x6c,0x54,0x44,0x44, // M
0x44,0x64,0x54,0x4c,0x44, // N
0x38,0x44,0x44,0x44,0x38, // O
0x78,0x44,0x78,0x40,0x40, // P
0x7c,0x44,0x44,0x7c,0x10, // Q
0x78,0x44,0x78,0x44,0x44, // R
0x3c,0x40,0x38,0x04,0x78, // S
0x7c,0x10,0x10,0x10,0x10, // T
0x44,0x44,0x44,0x44,0x38, // U
0x44,0x44,0x28,0x28,0x10, // V
0x44,0x44,0x54,0x54,0x28, // W
0x44,0x28,0x10,0x28,0x44, // X
0x44,0x44,0x28,0x10,0x10, // Y
0x7c,0x08,0x10,0x20,0x7c, // Z
0x38,0x44,0x44,0x44,0x38, // 0
0x20,0x60,0x20,0x20,0x70, // 1
0x78,0x04,0x38,0x40,0x7c, // 2
0x78,0x04,0x38,0x04,0x78, // 3
0x18,0x28,0x48,0x7c,0x08, // 4
0x7c,0x40,0x78,0x04,0x78, // 5
0x38,0x40,0x78,0x44,0x38, // 6
0x7c,0x04,0x08,0x10,0x10, // 7
0x38,0x44,0x38,0x44,0x38, // 8
0x38,0x44,0x3C,0x04,0x38, // 9
0x00,0x40,0x00,0x40,0x00, // :
0x00,0x00,0x00,0x20,0x40, // ,
0x00,0x00,0x00,0x00,0x40, // .
0x40,0x40,0x40,0x00,0x40, // !
0x20,0x50,0x20,0x00,0x40, // ` (degree)
0x28,0x7c,0x28,0x7c,0x28, // #
0x04,0x08,0x10,0x20,0x40, // /
0x30,0x48,0x10,0x00,0x10, // ?
0x20,0x20,0x00,0x00,0x00, // '
0x28,0x28,0x00,0x00,0x00, // "
0x28,0x7c,0x7c,0x38,0x10 // ^ (heart)
};
// 5x8 font
static const uint8_t font5x8[] = {
0x00, 0x00, 0x00, 0x00, 0x00, // (space)
0x00, 0x00, 0x5F, 0x00, 0x00, // !
0x00, 0x07, 0x00, 0x07, 0x00, // "
0x14, 0x7F, 0x14, 0x7F, 0x14, // #
0x24, 0x2A, 0x7F, 0x2A, 0x12, // $
0x23, 0x13, 0x08, 0x64, 0x62, // %
0x36, 0x49, 0x55, 0x22, 0x50, // &
0x00, 0x05, 0x03, 0x00, 0x00, // '
0x00, 0x1C, 0x22, 0x41, 0x00, // (
0x00, 0x41, 0x22, 0x1C, 0x00, // )
0x10, 0x54, 0x38, 0x54, 0x10, // *
0x08, 0x08, 0x3E, 0x08, 0x08, // +
0x00, 0xA0, 0x60, 0x00, 0x00, // ,
0x08, 0x08, 0x08, 0x08, 0x08, // -
0x00, 0x60, 0x60, 0x00, 0x00, // .
0x20, 0x10, 0x08, 0x04, 0x02, // /
0x3E, 0x41, 0x41, 0x41, 0x3E, // 0
0x00, 0x42, 0x7F, 0x40, 0x00, // 1
0x42, 0x61, 0x51, 0x49, 0x46, // 2
0x21, 0x41, 0x45, 0x4B, 0x31, // 3
0x18, 0x14, 0x12, 0x7F, 0x10, // 4
0x27, 0x45, 0x45, 0x45, 0x39, // 5
0x3C, 0x4A, 0x49, 0x49, 0x30, // 6
0x01, 0x71, 0x09, 0x05, 0x03, // 7
0x36, 0x49, 0x49, 0x49, 0x36, // 8
0x06, 0x49, 0x49, 0x29, 0x1E, // 9
0x00, 0x36, 0x36, 0x00, 0x00, // :
0x00, 0x56, 0x36, 0x00, 0x00, // ;
0x00, 0x08, 0x14, 0x22, 0x41, // <
0x14, 0x14, 0x14, 0x14, 0x14, // =
0x41, 0x22, 0x14, 0x08, 0x00, // >
0x02, 0x01, 0x51, 0x09, 0x06, // ?
0x32, 0x49, 0x79, 0x41, 0x3E, // @
0x7E, 0x11, 0x11, 0x11, 0x7E, // A
0x7F, 0x49, 0x49, 0x49, 0x36, // B
0x3E, 0x41, 0x41, 0x41, 0x22, // C
0x7F, 0x41, 0x41, 0x22, 0x1C, // D
0x7F, 0x49, 0x49, 0x49, 0x41, // E
0x7F, 0x09, 0x09, 0x01, 0x01, // F
0x3E, 0x41, 0x41, 0x51, 0x32, // G
0x7F, 0x08, 0x08, 0x08, 0x7F, // H
0x00, 0x41, 0x7F, 0x41, 0x00, // I
0x20, 0x40, 0x41, 0x3F, 0x01, // J
0x7F, 0x08, 0x14, 0x22, 0x41, // K
0x7F, 0x40, 0x40, 0x40, 0x40, // L
0x7F, 0x02, 0x04, 0x02, 0x7F, // M
0x7F, 0x04, 0x08, 0x10, 0x7F, // N
0x3E, 0x41, 0x41, 0x41, 0x3E, // O
0x7F, 0x09, 0x09, 0x09, 0x06, // P
0x3E, 0x41, 0x51, 0x21, 0x5E, // Q
0x7F, 0x09, 0x19, 0x29, 0x46, // R
0x46, 0x49, 0x49, 0x49, 0x31, // S
0x01, 0x01, 0x7F, 0x01, 0x01, // T
0x3F, 0x40, 0x40, 0x40, 0x3F, // U
0x1F, 0x20, 0x40, 0x20, 0x1F, // V
0x7F, 0x20, 0x18, 0x20, 0x7F, // W
0x63, 0x14, 0x08, 0x14, 0x63, // X
0x03, 0x04, 0x78, 0x04, 0x03, // Y
0x61, 0x51, 0x49, 0x45, 0x43, // Z
0x00, 0x00, 0x7F, 0x41, 0x41, // [
0x02, 0x04, 0x08, 0x10, 0x20, // "\"
0x41, 0x41, 0x7F, 0x00, 0x00, // ]
0x04, 0x02, 0x01, 0x02, 0x04, // ^
0x40, 0x40, 0x40, 0x40, 0x40, // _
0x02, 0x05, 0x02, 0x00, 0x00, // ` (degree symbol)
0x38, 0x44, 0x44, 0x24, 0x7c, // a
0x7F, 0x48, 0x44, 0x44, 0x38, // b
0x38, 0x44, 0x44, 0x44, 0x28, // c
0x38, 0x44, 0x44, 0x48, 0x7F, // d
0x38, 0x54, 0x54, 0x54, 0x18, // e
0x08, 0x7E, 0x09, 0x01, 0x02, // f
0x18, 0xA4, 0xA4, 0xA4, 0x7C, // g
0x7F, 0x08, 0x04, 0x04, 0x78, // h
0x00, 0x44, 0x7D, 0x40, 0x00, // i
0x40, 0x80, 0x84, 0x7D, 0x00, // j
0x00, 0x7F, 0x10, 0x28, 0x44, // k
0x00, 0x41, 0x7F, 0x40, 0x00, // l
0x7C, 0x04, 0x18, 0x04, 0x78, // m
0x7C, 0x08, 0x04, 0x04, 0x78, // n
0x38, 0x44, 0x44, 0x44, 0x38, // o
0xFC, 0x44, 0x44, 0x44, 0x38, // p
0x38, 0x44, 0x44, 0x44, 0xFC, // q
0x7C, 0x08, 0x04, 0x04, 0x08, // r
0x48, 0x54, 0x54, 0x54, 0x20, // s
0x04, 0x3F, 0x44, 0x40, 0x20, // t
0x3C, 0x40, 0x40, 0x20, 0x7C, // u
0x1C, 0x20, 0x40, 0x20, 0x1C, // v
0x3C, 0x40, 0x30, 0x40, 0x3C, // w
0x44, 0x28, 0x10, 0x28, 0x44, // x
0x1C, 0xA0, 0xA0, 0xA0, 0x7C, // y
0x44, 0x64, 0x54, 0x4C, 0x44, // z
0x00, 0x08, 0x36, 0x41, 0x00, // {
0x00, 0x00, 0x7F, 0x00, 0x00, // |
0x00, 0x41, 0x36, 0x08, 0x00, // }
0x10, 0x08, 0x10, 0x20, 0x10, // ~
0x00, 0x00, 0x00, 0x00, 0x00 // DEL (unused)
};
uint32_t RGB(uint32_t r, uint32_t g, uint32_t b) {
return ((r & 0xFF) << 16) | ((g & 0xFF) << 8) | (b & 0xFF);
}
uint32_t ExtractR(uint32_t color) {
return color >> 16 & 0xFF;
}
uint32_t ExtractG(uint32_t color) {
return color >> 8 & 0xFF;
}
uint32_t ExtractB(uint32_t color) {
return color & 0xFF;
}
void clearScreen() {
int32_t i, j;
for (i = 0; i < width; i++)
for (j = 0; j < height; j++)
setPixel(i, j, BLACK);
}
uint32_t fadePixel(uint32_t color, double fraction) {
uint32_t r, g, b;
r = ExtractR(color) * fraction;
g = ExtractG(color) * fraction;
b = ExtractB(color) * fraction;
return RGB(r, g, b);
}
void setPixel(int32_t x, int32_t y, uint32_t color) {
int16_t value, channel;
if (x < 0)
return;
if (x >= width)
return;
ledvalues[(y % height) * width + x] = color;
value = ledmap[(y % height) * width + x];
if (value < 0)
return;
channel = value & 1;
value = value / 2;
ledstring.channel[channel].leds[value] = color;
}
uint32_t getPixel(int32_t x, int32_t y) {
int16_t value, channel;
if (x < 0)
return 0;
if (x >= width)
return 0;
return ledvalues[(y % height) * width + x];
}
void setPixelNoWrap(uint32_t x, uint32_t y, uint32_t color) {
if (y >= height)
return;
setPixel(x, y, color);
}
void setScreen(uint32_t color) {
uint32_t i, j;
for (i = 0; i < width; i++)
for (j = 0; j < height; j++)
setPixel(i, j, color);
}
void fadeScreen(double fraction) {
uint32_t i, j, color;
for (i = 0; i < width; i++)
for (j = 0; j < height; j++) {
color = getPixel(i, j);
color = fadePixel(color, fraction);
setPixel(i, j, color);
}
}
uint32_t Draw5x5Char(uint8_t c, uint32_t x, uint32_t y, uint32_t color) {
uint8_t *p1, *p2, *p;
uint32_t n = 0;
uint32_t i, j, mask;
uint8_t s[] = " ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:,.!`#/?'\"^";
uint32_t ccolor;
// If it's a space, advance 2 pixels
if (c == ' ')
return(2);
ccolor = color;
if (c == '^')
ccolor = RED; // force red color for hearts
p = font5x5;
for (i = 0; i < strlen(s) && s[i] != toupper(c); i++)
p += 5;
// Draw character
for (i = 0; i < 5; i++) {
if (p[i] != 0) {
mask = 0x40;
for (j = 0; j < 5; j++) {
if ((p[i] & mask) != 0) {
setPixel(x + j, y + i, ccolor);
if (j > n)
n = j;
}
mask = mask / 2;
}
}
}
// Return the character width
return(n + 1);
}
void Draw5x5String(uint8_t *p, uint32_t x, uint32_t y) {
uint32_t i = 0;
uint32_t color = GREEN;
while (*p != '\0') {
if (i++ > 30)
color = YELLOW;
if (*p == ',') // give comma a descender
x += (Draw5x5Char(*p, x, y + 1, color) + 1);
else
x += (Draw5x5Char(*p, x, y, color) + 1);
*p++;
}
}
uint32_t Draw5x8Char(uint8_t c, uint32_t x, uint32_t y, uint32_t color) {
uint8_t *p1, *p2, *p = &font5x8[(c - ' ') * 5];
uint32_t n = 0;
uint32_t i, j, mask;
// If it's a space, advance 2 pixels
if (c == ' ')
return(2);
// Figure out where the character begins and ends so we can kern it nice and tight
p1 = NULL;
for (i = 0; i < 5; i++) {
if (p[i] != '\0' && p1 == NULL)
p1 = &p[i];
if (p[i] != '\0')
p2 = &p[i];
}
// How wide is the character?
n = p2 - p1 + 1;
// Draw character
for (i = 0; i < n; i++) {
if (p1[i] != 0) {
mask = 1;
for (j = 0; j < 8; j++) {
if ((p1[i] & mask) != 0)
setPixel(x + i, y + j, color);
mask <<= 1;
}
}
}
// Return the character width
return(n);
}
void Draw5x8String(uint8_t *p, uint32_t x, uint32_t y) {
uint32_t i = 0;
uint32_t color = WHITE;
while (*p != '\0') {
//if (i++ > 30)
// color = CYAN;
x += (Draw5x8Char(*p, x, y, color) + 1);
*p++;
}
}
void Delay() {
usleep(70000);
}
void Render() {
ws2811_render(&ledstring);
}
WriteCommand() {
FILE *fp = fopen(COMMAND, "w");
fprintf(fp, "%s\n", command);
fclose(fp);
}
// angle : 0 - 1536
uint32_t Colors(uint32_t angle) {
uint32_t t = angle & 255;
uint32_t r, g, b;
switch ((angle >> 8) % 6) {
case 0: r = 255; g = t; b = 0; break;
case 1: r = 255 - t; g = 255; b = 0; break;
case 2: r = 0; g = 255; b = t; break;
case 3: r = 0; g = 255 - t; b = 255; break;
case 4: r = t; g = 0; b = 255; break;
case 5: r = 255; g = 0; b = 255 - t; break;
}
return RGB(r, g, b);
}
static uint32_t itime = 0;
void ScrollString(uint8_t *s, uint32_t color) {
uint32_t i, j, k, bcolor, y;
y = floor((height - 10) / 2);
uint32_t n = strlen(s) - 1;
k = width;
for (i = 0; i < width + (n * 6) + 5; i++) {
clearScreen();
// Scrolling color borders
for (j = 0; j < k; j++) {
bcolor = Colors((j % k) * (1536 / k));
setPixel((j + itime) % width, y, bcolor);
setPixel((j + itime) % width, y + 9, bcolor);
}
Draw5x8String(s, width - i, y + 1);
itime++;
Render();
Delay();
}
}
uint8_t Do5x8String(uint8_t *s, uint32_t *i, int32_t y) {
int32_t n = strlen(s) - 1;
if (n <= 0)
return(TRUE);
Draw5x8String(s, width - *i, y);
itime++;
(*i)++;
if (*i < (width + (n * 6) + 5))
return(FALSE);
else
return(TRUE);
}
uint8_t Do5x5String(uint8_t *s, uint32_t *i, int32_t y) {
int32_t n = strlen(s) - 1;
if (n <= 0)
return(TRUE);
Draw5x5String(s, width - *i, y);
itime++;
(*i)++;
if (*i < (width + (n * 6) + 5))
return(FALSE);
else
return(TRUE);
}
void scrollLeft() {
uint32_t arr[height];
int32_t i, j;
for (j = 0; j < height; j++)
arr[j] = getPixel(0, j);
for (i = 1; i < width; i++)
for (j = 0; j < height; j++)
setPixel(i - 1, j, getPixel(i, j));
for (j = 0; j < height; j++)
setPixel(width - 1, j, arr[j]);
}
void scrollRight() {
uint32_t arr[height];
int32_t i, j;
for (j = 0; j < height; j++)
arr[j] = getPixel(width - 1, j);
for (i = width - 1; i > 0; i--)
for (j = 0; j < height; j++)
setPixel(i, j, getPixel(i - 1, j));
for (j = 0; j < height; j++)
setPixel(0, j, arr[j]);
}
void scrollUp() {
uint32_t arr[width];
int32_t i, j;
for (i = 0; i < width; i++)
arr[i] = getPixel(i, 0);
for (j = 1; j < height; j++)
for (i = 0; i < width; i++)
setPixel(i, j - 1, getPixel(i, j));
for (i = 0; i < width; i++)
setPixel(i, height - 1, arr[i]);
}
void scrollDown() {
uint32_t arr[width];
int32_t i, j;
for (i = 0; i < width; i++)
arr[i] = getPixel(i, height - 1);
for (j = height - 1; j > 0; j--)
for (i = 0; i < width; i++)
setPixel(i, j, getPixel(i, j - 1));
for (i = 0; i < width; i++)
setPixel(i, 0, arr[i]);
}
void TimeDateWeather () {
uint32_t i0 = 0, i1 = 0, count;
int32_t idur, i, j, y5x8, y5x5;
FILE *fp;
uint8_t s0[500], s1[500], s2[500];
uint8_t sTemperature[500], sForecast[500];
uint8_t sDate[500], s[500], *p;
struct {
uint32_t fonttype;
uint32_t pos;
uint8_t s[300];
uint8_t s2[300];
} arr[10];
uint8_t temp[10];
uint8_t n5x8, n5x5, i5x8, i5x5;
char lines5x8[20][128];
char lines5x5[20][128];
itime = 0;
uint32_t bgcolor = BLACK;
s[0] = '\0';
s0[0] = '\0';
s1[0] = '\0';
s2[0] = '\0';
sTemperature[0] = '\0';
sForecast[0] = '\0';
i5x8 = 0;
i5x5 = 0;
// Read messages for 5x8 text
n5x8 = 0;
fp = fopen(MESSAGES5x8, "r");
if (fp != NULL) {
while(fgets(lines5x8[n5x8], 128, fp)) {
lines5x8[n5x8][strlen(lines5x8[n5x8]) - 1] = '\0';
n5x8++;
}
fclose(fp);
}
// Read messages for 5x5 text
n5x5 = 0;
fp = fopen(MESSAGES5x5, "r");
if (fp != NULL) {
while(fgets(lines5x5[n5x5], 128, fp)) {
lines5x5[n5x5][strlen(lines5x5[n5x5]) - 1] = '\0';
n5x5++;
}
fclose(fp);
}
// Clear text render queue
for (i = 0; i < (sizeof(arr) / sizeof(arr[0])); i++) {
arr[i].fonttype = 0;
arr[i].pos = 0;
arr[i].s[0] = '\0';
arr[i].s2[0] = '\0';
}
y5x8 = floor((height - 13) / 2);
y5x5 = y5x8 + 8;
ws2811_init(&ledstring);
while(TRUE) {
for (idur = 0; idur < 390; idur++) {
// Clear screen
setScreen(bgcolor);
// Render strings
for (i = 0; i < (sizeof(arr) / sizeof(arr[0])); i++) {
// Render 5x8 strings
if (arr[i].fonttype == FONT5X8)
if (Do5x8String(arr[i].s, &arr[i].pos, y5x8))
arr[i].fonttype = 0;
// Render 5x5 strings
if (arr[i].fonttype == FONT5X5)
if (Do5x5String(arr[i].s, &arr[i].pos, y5x5))
arr[i].fonttype = 0;
}
// Need to generate new 5x8 string?
count = 0;
for (i = width / 2; i < width; i++)
for (j = 1; j < 9; j++)
if (getPixel(i, j) != bgcolor)
count++;
if (count == 0) {
// Generate new 5x8 string
for (i = 0; arr[i].fonttype != 0; i++);
arr[i].s[0] = '\0';
arr[i].s2[0] = '\0';
arr[i].fonttype = FONT5X8;
arr[i].pos = 1;
// Temperature
s[0]= '\0';
fp = fopen(TEMPERATURE, "r");
if (fp != NULL) {
fgets(s, sizeof(s) - 1, fp);
fclose(fp);
s[strlen(s) - 1] = '\0';
p = strstr(s, ".");
if (p != NULL)
*p = '\0';
if (strlen(s) > 0 && strstr(s, "null") == NULL) {
strcat(s, "`F");
strcpy(sTemperature, s);
}
}
// Forecast
s[0]= '\0';
fp = fopen(FORECAST, "r");
if (fp != NULL) {
fgets(s, sizeof(s) - 1, fp);
fclose(fp);
s[strlen(s) - 1] = '\0';
if (strlen(s) > 0)
strcpy(sForecast, s);
}
strcat(arr[i].s, sTemperature);
strcat(arr[i].s, " ");
strcat(arr[i].s, sForecast);
// Messages: appended to forecast
//if (n5x8 > 0) {
// if (i5x8 >= n5x8) i5x8 = 0;
// strcat(arr[i].s, " ");
// strcat(arr[i].s, lines5x8[i5x8++]);
//}
}
// Need to generate new 5x5 string?
count = 0;
for (i = width / 2; i < width; i++)
for (j = 9; j < 15; j++)
if (getPixel(i, j) != bgcolor)
count++;
if (count == 0) {
// Generate new 5x5 string
for (i = 0; arr[i].fonttype != 0; i++);
arr[i].s[0] = '\0';
arr[i].s2[0] = '\0';
arr[i].fonttype = FONT5X5;
arr[i].pos = 1;
// Date
// Sat, May 2, 2020
fp = popen("date +'%a, %b %-d, %Y'", "r");
if (fp != NULL) {
fgets(s0, sizeof(s0) - 1, fp);
pclose(fp);
s0[strlen(s0) - 1] = '\0';
strcat(arr[i].s, s0);
strcat(arr[i].s, " ");
}
// Time
// 6:18 pm
fp = popen("date +'%-I:%M %P'", "r");
if (fp != NULL) {
fgets(s0, sizeof(s0) - 1, fp);
pclose(fp);
s0[strlen(s0) - 1] = '\0';
strcat(arr[i].s, s0);
}
// Messages: appended to date/time
//if (n5x5 > 0) {
// if (i5x5 >= n5x5) i5x5 = 0;
// strcat(arr[i].s, " ");
// strcat(arr[i].s, lines5x5[i5x5++]);
//}
}
Render();
Delay();
}
// Holidays
sDate[0] = '\0';
fp = popen("date +'%a, %b %-d, %Y'", "r");
if (fp != NULL) {
if (fgets(sDate, sizeof(sDate) - 1, fp) == NULL)
sDate[0] = '\0';
else
sDate[strlen(sDate) - 1] = '\0';
pclose(fp);
}
if (strlen(sDate) > 0) {
fp = fopen(HOLIDAYS, "r");
if (fp != NULL) {
while (fp != NULL) {
if (fgets(s, sizeof(s) - 1, fp) == NULL)
break;
s[strlen(s) - 1] = '\0';
sprintf(s1, " %s ", sDate);
sprintf(s2, " %s ", s);
if (strstr(s1, s2) != NULL) {
if (fgets(s, sizeof(s) - 1, fp) == NULL)
break;
s[strlen(s) - 1] = '\0';
DrawShapes(70);
ScrollString(s, WHITE);
DrawShapes(70);
break;
}
}
fclose(fp);
}
}
}
}
void RainbowLights() {
uint32_t i, j, initcolor, color;
ws2811_init(&ledstring);
initcolor = 0;
clearScreen();
while (TRUE) {
initcolor = (initcolor + 70) % 1536;
for (i = 0; i < width; i++) {
color = Colors((initcolor + (i * (1536 / width) )) % 1536);
for (j = 0; j < height; j++)
setPixel(i, j, color);
}
Delay();
Render();
}
}
void DrawShapes(uint32_t duration) {
#define NSHAPES 7
uint32_t i, j;
struct {
uint8_t type;
int32_t xcenter;
int32_t ycenter;
uint32_t size;
uint32_t color;
} arr[NSHAPES];
// start with no shapes
for (i = 0; i < NSHAPES; i++)
arr[i].size = 0;
clearScreen();
for (i = 0; i < duration; i++) {
fadeScreen(0.60);
// create a shape if necessary
if (i % 4 == 0) {
for (j = 0; j < NSHAPES; j++) {
if (arr[j].size == 0) {
arr[j].type = rand() & 1;
arr[j].xcenter = rand() % width;
arr[j].ycenter = rand() % height;
arr[j].size = 1;
arr[j].color = Colors(rand() % 1536);
break;
}
}
}
// render shapes
for (j = 0; j < NSHAPES; j++) {
if (arr[j].size > 0) {
if (arr[j].type == 0)
DrawCircle(arr[j].xcenter, arr[j].ycenter, arr[j].size, arr[j].color);
else
DrawBox(arr[j].xcenter, arr[j].ycenter, arr[j].size, arr[j].color);
// delete shape if it's expanded enough
if (arr[j].size++ == 9)
arr[j].size = 0;
}
}
Render();
Delay();
}
clearScreen();
Render();
}
void Lines() {
int32_t x0, y0, x1, y1;
uint32_t color;
ws2811_init(&ledstring);
while (TRUE) {
color = Colors(rand() % 1536);
x0 = rand() % width;
x1 = rand() % width;
fadeScreen(0.90);
DrawLine(x0, 0, x1, height - 1, color);
Render();
Delay();
color = Colors(rand() % 1536);
y0 = rand() % height;
y1 = rand() % height;
fadeScreen(0.90);
DrawLine(0, y0, width - 1, y1, color);
Render();
Delay();
}
}
void DrawLine(int32_t x0, int32_t y0, int32_t x1, int32_t y1, uint32_t color) {
int dx = abs(x1 - x0), sx = x0 < x1 ? 1 : -1;
int dy = abs(y1 - y0), sy = y0 < y1 ? 1 : -1;
int err = (dx > dy ? dx : -dy) / 2, e2;
while (TRUE) {
setPixelNoWrap(x0, y0, color);
if (x0 == x1 && y0 == y1)
break;
e2 = err;
if (e2 > -dx) {
err -= dy;
x0 += sx;
}
if (e2 < dy) {
err += dx;
y0 += sy;
}
}
}
void DrawBox(uint32_t x0, uint32_t y0, uint32_t size, uint32_t color) {
int32_t i, x1, y1, width;
width = size + 1;
x1 = x0 - (width / 2);
y1 = y0 - (width / 2);
for (i = x1; i <= x1 + width; i++) {
setPixelNoWrap(i, y1, color);
setPixelNoWrap(i, y1 + width, color);
}
for (i = y1; i <= y1 + width; i++) {
setPixelNoWrap(x1, i, color);
setPixelNoWrap(x1 + width, i, color);
}
}
void DrawCircle(uint32_t x0, uint32_t y0, uint32_t size, uint32_t color) {
int32_t x = size;
int32_t y = 0;
int32_t radiusError = 1 - x;
while (x >= y) {
setPixelNoWrap(x + x0, y + y0, color);
setPixelNoWrap(y + x0, x + y0, color);
setPixelNoWrap(-x + x0, y + y0, color);
setPixelNoWrap(-y + x0, x + y0, color);
setPixelNoWrap(-x + x0, -y + y0, color);
setPixelNoWrap(-y + x0, -x + y0, color);
setPixelNoWrap(x + x0, -y + y0, color);
setPixelNoWrap(y + x0, -x + y0, color);
y++;
if (radiusError < 0) {
radiusError += 2 * y + 1;
} else {
x--;
radiusError += 2 * (y - x) + 1;
}
}
}
static void kill_handler(uint32_t signum) {
ws2811_fini(&ledstring);
}
static void setup_handlers(void) {
struct sigaction sa = {
.sa_handler = kill_handler,
};
sigaction(SIGUSR1, &sa, NULL);
}
int16_t CharCount(const uint8_t *str, uint8_t character) {
const uint8_t *p = str;
int16_t count = 0;
do {
if (*p == character)
count++;