Liyou Zhou / Mbed 2 deprecated light_painter

A neopixel light painting strip

Dependencies:   mbed

Fork of LocalFileSystem_HelloWorld by mbed official

main.cpp@1:cb842cdf5858, 2015-07-06 (annotated)

Committer:
lz307
Date:
Mon Jul 06 20:50:42 2015 +0000
Revision:
1:cb842cdf5858
Parent:
0:cc465aef98cf
Child:
2:5021f3ba2043
Building light painter with neopixel.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:cc465aef98cf 1 #include "mbed.h"
lz307 1:cb842cdf5858 2 #include "BitmapFile.h"
lz307 1:cb842cdf5858 3 #include <string>
lz307 1:cb842cdf5858 4 #include "PinDetect.h"
lz307 1:cb842cdf5858 5 #include "NeoStrip.h"
lz307 1:cb842cdf5858 6
lz307 1:cb842cdf5858 7 # define MAX_FILE 30
lz307 1:cb842cdf5858 8
lz307 1:cb842cdf5858 9 #define N 32
lz307 1:cb842cdf5858 10 NeoStrip strip(p5, N);
lz307 1:cb842cdf5858 11 float bright = 0.2; // 20% is plenty for indoor use
lz307 1:cb842cdf5858 12
lz307 1:cb842cdf5858 13 PinDetect b1(p25, PullUp);
lz307 1:cb842cdf5858 14 PinDetect b2(p29, PullUp);
lz307 1:cb842cdf5858 15 PinDetect b3(p22, PullUp);
lz307 1:cb842cdf5858 16 PinDetect b4(p27, PullUp);
lz307 1:cb842cdf5858 17
mbed_official 0:cc465aef98cf 18 LocalFileSystem local("local"); // Create the local filesystem under the name "local"
lz307 1:cb842cdf5858 19 Serial pc(USBTX, USBRX); // tx, rx
lz307 1:cb842cdf5858 20 BitmapFile *MyBitmap;
lz307 1:cb842cdf5858 21
lz307 1:cb842cdf5858 22 char *f_list[MAX_FILE];
lz307 1:cb842cdf5858 23 int file_index = 0; // get the index of file being displayed
lz307 1:cb842cdf5858 24 unsigned max_file = 0; // register how many files there are
lz307 1:cb842cdf5858 25
lz307 1:cb842cdf5858 26 char * get_file_name() {
lz307 1:cb842cdf5858 27 char *fn = NULL;
lz307 1:cb842cdf5858 28 unsigned i = 0; // index in the file list;
lz307 1:cb842cdf5858 29 DIR *d = opendir("/local"); // Opens the root directory of the local file system
lz307 1:cb842cdf5858 30 struct dirent *p;
lz307 1:cb842cdf5858 31 while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
lz307 1:cb842cdf5858 32 int l = strlen(p->d_name);
lz307 1:cb842cdf5858 33 if (strcmp(&(p->d_name[l-3]), "BMP") == 0) {
lz307 1:cb842cdf5858 34 i++;
lz307 1:cb842cdf5858 35 if (file_index == i) {
lz307 1:cb842cdf5858 36 fn = (char *) malloc(50);
lz307 1:cb842cdf5858 37 strcpy(fn, p->d_name);
lz307 1:cb842cdf5858 38 break;
lz307 1:cb842cdf5858 39 }
lz307 1:cb842cdf5858 40 }
lz307 1:cb842cdf5858 41 }
lz307 1:cb842cdf5858 42 closedir(d);
lz307 1:cb842cdf5858 43
lz307 1:cb842cdf5858 44 return fn;
lz307 1:cb842cdf5858 45 }
lz307 1:cb842cdf5858 46
lz307 1:cb842cdf5858 47
lz307 1:cb842cdf5858 48 void brightnessUp(void) {
lz307 1:cb842cdf5858 49 if (bright < 1)
lz307 1:cb842cdf5858 50 {
lz307 1:cb842cdf5858 51 bright += 0.01;
lz307 1:cb842cdf5858 52 if (bright > 1)
lz307 1:cb842cdf5858 53 bright = 1;
lz307 1:cb842cdf5858 54 printf("increase brightness\r\n");
lz307 1:cb842cdf5858 55 strip.setBrightness(bright);
lz307 1:cb842cdf5858 56 }
lz307 1:cb842cdf5858 57 }
lz307 1:cb842cdf5858 58
lz307 1:cb842cdf5858 59 void brightnessDown(void) {
lz307 1:cb842cdf5858 60 if (bright > 0)
lz307 1:cb842cdf5858 61 {
lz307 1:cb842cdf5858 62 bright -= 0.01;
lz307 1:cb842cdf5858 63 if (bright < 0)
lz307 1:cb842cdf5858 64 bright = 0;
lz307 1:cb842cdf5858 65 printf("decrease brightness\r\n");
lz307 1:cb842cdf5858 66 strip.setBrightness(bright);
lz307 1:cb842cdf5858 67 }
lz307 1:cb842cdf5858 68 }
lz307 1:cb842cdf5858 69
lz307 1:cb842cdf5858 70 void fileDown(void) {
lz307 1:cb842cdf5858 71 file_index--;
lz307 1:cb842cdf5858 72 if (file_index < 0)
lz307 1:cb842cdf5858 73 file_index = max_file;
lz307 1:cb842cdf5858 74 printf("fileDown to %i:%s\r\n", file_index, f_list[file_index]);
lz307 1:cb842cdf5858 75 }
lz307 1:cb842cdf5858 76
lz307 1:cb842cdf5858 77 void fileUp(void) {
lz307 1:cb842cdf5858 78 file_index++;
lz307 1:cb842cdf5858 79 if (file_index > max_file)
lz307 1:cb842cdf5858 80 file_index = 0;
lz307 1:cb842cdf5858 81 printf("fileUp to %i:%s\r\n", file_index, f_list[file_index]);
lz307 1:cb842cdf5858 82 }
lz307 1:cb842cdf5858 83
lz307 1:cb842cdf5858 84 void patternStart(void) {
lz307 1:cb842cdf5858 85 printf("file_index: %i\r\n", file_index);
lz307 1:cb842cdf5858 86 if (file_index == 0)
lz307 1:cb842cdf5858 87 return;
lz307 1:cb842cdf5858 88
lz307 1:cb842cdf5858 89 printf("fn: %s\r\n", f_list[file_index]);
lz307 1:cb842cdf5858 90
lz307 1:cb842cdf5858 91 char *fn = get_file_name();
lz307 1:cb842cdf5858 92
lz307 1:cb842cdf5858 93 unsigned l = strlen(fn);
lz307 1:cb842cdf5858 94 char *path = (char *) malloc(l+7);
lz307 1:cb842cdf5858 95 path[0] = 0;
lz307 1:cb842cdf5858 96 strcat(path, "/local/");
lz307 1:cb842cdf5858 97 strcat(path, fn);
lz307 1:cb842cdf5858 98 printf("path: %s\r\n", path);
lz307 1:cb842cdf5858 99
lz307 1:cb842cdf5858 100 MyBitmap = new BitmapFile(path);
lz307 1:cb842cdf5858 101 for(int row = 0; row < MyBitmap->getHeight(); row++)
lz307 1:cb842cdf5858 102 {
lz307 1:cb842cdf5858 103 int *row_color = MyBitmap->getRow(row, false);
lz307 1:cb842cdf5858 104 for(int col = 0; col < MyBitmap->getWidth(); col++)
lz307 1:cb842cdf5858 105 {
lz307 1:cb842cdf5858 106 unsigned c = row_color[col] & 0xffffff;
lz307 1:cb842cdf5858 107 strip.setPixel(col, c & 0xff0000, c & 0xff00, c & 0xff);
lz307 1:cb842cdf5858 108 if ( c > 0xfff )
lz307 1:cb842cdf5858 109 printf(" ");
lz307 1:cb842cdf5858 110 else
lz307 1:cb842cdf5858 111 printf("*");
lz307 1:cb842cdf5858 112 }
lz307 1:cb842cdf5858 113 strip.write();
lz307 1:cb842cdf5858 114 printf("\r\n");
lz307 1:cb842cdf5858 115 delete [] row_color;
lz307 1:cb842cdf5858 116 }
lz307 1:cb842cdf5858 117 printf("closing\r\n");
lz307 1:cb842cdf5858 118 MyBitmap->close();
lz307 1:cb842cdf5858 119 printf("closed\r\n");
lz307 1:cb842cdf5858 120 free(fn);
lz307 1:cb842cdf5858 121 free(path);
lz307 1:cb842cdf5858 122 }
lz307 1:cb842cdf5858 123
lz307 1:cb842cdf5858 124
mbed_official 0:cc465aef98cf 125 int main() {
lz307 1:cb842cdf5858 126 b1.setAssertValue( 0 );
lz307 1:cb842cdf5858 127 b2.setAssertValue( 0 );
lz307 1:cb842cdf5858 128 b3.setAssertValue( 0 );
lz307 1:cb842cdf5858 129 b4.setAssertValue( 0 );
lz307 1:cb842cdf5858 130
lz307 1:cb842cdf5858 131 b1.attach_asserted( &brightnessDown );
lz307 1:cb842cdf5858 132 b2.attach_asserted( &patternStart );
lz307 1:cb842cdf5858 133 b3.attach_asserted( &brightnessUp );
lz307 1:cb842cdf5858 134
lz307 1:cb842cdf5858 135 b1.attach_asserted_held( &fileDown );
lz307 1:cb842cdf5858 136 b3.attach_asserted_held( &fileUp );
lz307 1:cb842cdf5858 137
lz307 1:cb842cdf5858 138 strip.setBrightness(bright); // set default brightness
lz307 1:cb842cdf5858 139
lz307 1:cb842cdf5858 140
lz307 1:cb842cdf5858 141 // build a list of files
lz307 1:cb842cdf5858 142 for (unsigned i=0; i<MAX_FILE; i++)
lz307 1:cb842cdf5858 143 f_list[i] = NULL;
lz307 1:cb842cdf5858 144
lz307 1:cb842cdf5858 145 unsigned i = 0; // index in the file list;
lz307 1:cb842cdf5858 146 DIR *d = opendir("/local"); // Opens the root directory of the local file system
lz307 1:cb842cdf5858 147 struct dirent *p;
lz307 1:cb842cdf5858 148 while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
lz307 1:cb842cdf5858 149 int l = strlen(p->d_name);
lz307 1:cb842cdf5858 150 if (strcmp(&(p->d_name[l-3]), "BMP") == 0) {
lz307 1:cb842cdf5858 151 char *tmp_str = (char *) malloc(l+1);
lz307 1:cb842cdf5858 152 strcpy(tmp_str, p->d_name);
lz307 1:cb842cdf5858 153 i++;
lz307 1:cb842cdf5858 154 f_list[i] = tmp_str;
lz307 1:cb842cdf5858 155 printf("f_list: %i:%s\r\n", i, tmp_str);
lz307 1:cb842cdf5858 156 }
lz307 1:cb842cdf5858 157 }
lz307 1:cb842cdf5858 158 closedir(d);
lz307 1:cb842cdf5858 159
lz307 1:cb842cdf5858 160 max_file = i;
lz307 1:cb842cdf5858 161 b1.setSampleFrequency();
lz307 1:cb842cdf5858 162 b2.setSampleFrequency();
lz307 1:cb842cdf5858 163 b3.setSampleFrequency();
lz307 1:cb842cdf5858 164 b4.setSampleFrequency();
lz307 1:cb842cdf5858 165
lz307 1:cb842cdf5858 166 while(1)
lz307 1:cb842cdf5858 167 __WFI();
mbed_official 0:cc465aef98cf 168 }