Diff: main.cpp

Revision:

2:5021f3ba2043

Parent:

1:cb842cdf5858

--- a/main.cpp	Mon Jul 06 20:50:42 2015 +0000
+++ b/main.cpp	Tue Nov 10 21:17:10 2015 +0000
@@ -44,6 +44,22 @@
     return fn;
 }
 
+void strip_off() {
+    for (int i=0; i<N; i++) {
+        strip.setPixel(i, 0);
+    }
+    strip.write();
+}
+
+void display_number(float f) {
+    for (int i=0; i<N; i++) {
+        if (i<(f*N))
+            strip.setPixel(i, 0xffffff);
+    }
+    strip.write();
+    wait(0.2);
+    strip_off();
+}
 
 void brightnessUp(void) {
     if (bright < 1)
@@ -53,6 +69,7 @@
             bright = 1;
         printf("increase brightness\r\n");
         strip.setBrightness(bright);
+        display_number(bright);
     }
 }
 
@@ -64,6 +81,7 @@
             bright = 0;
         printf("decrease brightness\r\n");
         strip.setBrightness(bright);
+        display_number(bright);
     }
 }
 
@@ -72,6 +90,7 @@
     if (file_index < 0)
         file_index = max_file;
     printf("fileDown to %i:%s\r\n", file_index, f_list[file_index]);
+    display_number(file_index/float(N));
 }
 
 void fileUp(void) {
@@ -79,12 +98,72 @@
     if (file_index > max_file)
         file_index = 0;
     printf("fileUp to %i:%s\r\n", file_index, f_list[file_index]);
+    display_number(file_index/float(N));
 }
 
+
+// Converts HSV to RGB with the given hue, assuming
+// maximum saturation and value
+int hueToRGB(float h)
+{
+    // lots of floating point magic from the internet and scratching my head
+    float r, g, b;
+    if (h > 360)
+        h -= 360;
+    if (h < 0)
+        h += 360;
+    int i = (int)(h / 60.0);
+    float f = (h / 60.0) - i;
+    float q = 1 - f;
+    
+    switch (i % 6)
+    {
+        case 0: r = 1; g = f; b = 0; break;
+        case 1: r = q; g = 1; b = 0; break;
+        case 2: r = 0; g = 1; b = f; break;
+        case 3: r = 0; g = q; b = 1; break;
+        case 4: r = f; g = 0; b = 1; break;
+        case 5: r = 1; g = 0; b = q; break;
+        default: r = 0; g = 0; b = 0; break;
+    }
+    
+    // scale to integers and return the packed value
+    uint8_t R = (uint8_t)(r * 255);
+    uint8_t G = (uint8_t)(g * 255);
+    uint8_t B = (uint8_t)(b * 255);
+
+    return (R << 16) | (G << 8) | B;
+}
+
+
+void pattern1()
+{
+    static float dh = 360.0 / N;
+    static float x = 0;
+    printf("%f\r\n",x);
+
+    for (int i = 0; i < N; i++) {
+        int c = hueToRGB((dh * i) - x);
+        //printf("R %i, G %i, B %i\r\n", (c>>16)&0xff, (c>>8)&0xff, c&0xff);
+        strip.setPixel(i, c);
+    }
+    
+    x += 1;
+    if (x > 360)
+        x = 0;
+}
+
+
 void patternStart(void) {    
     printf("file_index: %i\r\n", file_index);
-    if (file_index == 0)
+    if (file_index == 0) {
+        for ( int j=0; j<100; j++ ){
+            pattern1();
+            strip.write();
+            wait_ms(20);
+        }
         return;
+    }
     
     printf("fn: %s\r\n", f_list[file_index]);
     
@@ -104,13 +183,14 @@
         for(int col = 0; col < MyBitmap->getWidth(); col++)
         {
             unsigned c = row_color[col] & 0xffffff;
-            strip.setPixel(col, c & 0xff0000, c & 0xff00, c & 0xff);
+            strip.setPixel(col, c);
             if ( c > 0xfff )
                 printf(" ");
             else
                 printf("*");
         }
         strip.write();
+        wait_ms(20);
         printf("\r\n");
         delete [] row_color;
     }
@@ -119,9 +199,12 @@
     printf("closed\r\n");
     free(fn);
     free(path);
+    strip_off();
 }
 
 
+
+
 int main() {
     b1.setAssertValue( 0 );
     b2.setAssertValue( 0 );