SHOHEI FUJIMOTO
LineLedControl
Fork of
LPD8806_Test
by 
Jelmer Tiete
Diff: main.cpp
- Revision:
- 1:c70352e536c0
- Parent:
- 0:005ed7611285
- Child:
- 2:c9d9fa02a4e4
--- a/main.cpp Fri Dec 16 03:26:01 2011 +0000
+++ b/main.cpp Fri Dec 16 03:31:25 2011 +0000
@@ -1,175 +1,173 @@
-// Mbed library to control LPD8806-based RGB LED Strips
-// (c) 2011 Jelmer Tiete
-// This library is ported from the Arduino implementation of Adafruit Industries
-// found at: http://github.com/adafruit/LPD8806
-// and their strips: http://www.adafruit.com/products/306
-// Released under the MIT License: http://mbed.org/license/mit
-
-/*****************************************************************************/
-
-#include "LPD8806.h"
-
-LPD8806 strip = LPD8806(5);
-
-// Chase a dot down the strip
-// good for testing purposes
-void colorChase(uint32_t c, uint8_t delay) {
- int i;
-
- for (i=0; i < strip.numPixels(); i++) {
- strip.setPixelColor(i, 0); // turn all pixels off
- }
-
- for (i=0; i < strip.numPixels(); i++) {
- strip.setPixelColor(i, c);
- if (i == 0) {
- strip.setPixelColor(strip.numPixels()-1, 0);
- } else {
- strip.setPixelColor(i-1, 0);
- }
- strip.show();
- wait_ms(delay);
- }
-}
-
-// fill the dots one after the other with said color
-// good for testing purposes
-void colorWipe(uint32_t c, uint8_t delay) {
- int i;
-
- for (i=0; i < strip.numPixels(); i++) {
- strip.setPixelColor(i, c);
- strip.show();
- wait_ms(delay);
- }
-}
-
-//Input a value 0 to 384 to get a color value.
-//The colours are a transition r - g -b - back to r
-
-uint32_t Wheel(uint16_t WheelPos)
-{
- uint8_t b=0;
- uint8_t g=0;
- uint8_t r = 0;
- switch(WheelPos / 128)
- {
- case 0:
- r = 127 - WheelPos % 128; //Red down
- g = WheelPos % 128; // Green up
- b = 0; //blue off
- break;
- case 1:
- g = 127 - WheelPos % 128; //green down
- b = WheelPos % 128; //blue up
- r = 0; //red off
- break;
- case 2:
- b = 127 - WheelPos % 128; //blue down
- r = WheelPos % 128; //red up
- g = 0; //green off
- break;
- }
- return(strip.Color(r,g,b));
-}
-
-void rainbow(uint8_t delay) {
- int i, j;
-
- for (j=0; j < 384; j++) { // 3 cycles of all 384 colors in the wheel
- for (i=0; i < strip.numPixels(); i++) {
- strip.setPixelColor(i, Wheel( (i + j) % 384));
- }
- strip.show(); // write all the pixels out
- wait_ms(delay);
- }
-}
-
-// Slightly different, this one makes the rainbow wheel equally distributed
-// along the chain
-void rainbowCycle(uint8_t delay) {
- uint16_t i, j;
-
- for (j=0; j < 384 * 5; j++) { // 5 cycles of all 384 colors in the wheel
- for (i=0; i < strip.numPixels(); i++) {
- // tricky math! we use each pixel as a fraction of the full 384-color wheel
- // (thats the i / strip.numPixels() part)
- // Then add in j which makes the colors go around per pixel
- // the % 384 is to make the wheel cycle around
- strip.setPixelColor(i, Wheel( ((i * 384 / strip.numPixels()) + j) % 384) );
- }
- strip.show(); // write all the pixels out
- wait_ms(delay);
- }
-}
-
-// "Larson scanner" = Cylon/KITT bouncing light effect
-void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t delay) {
- int i, j, pos, dir;
-
- pos = 0;
- dir = 1;
-
- for(i=0; i<((strip.numPixels()-1) * 8); i++) {
- // Draw 5 pixels centered on pos. setPixelColor() will clip
- // any pixels off the ends of the strip, no worries there.
- // we'll make the colors dimmer at the edges for a nice pulse
- // look
- strip.setPixelColor(pos - 2, strip.Color(r/4, g/4, b/4));
- strip.setPixelColor(pos - 1, strip.Color(r/2, g/2, b/2));
- strip.setPixelColor(pos, strip.Color(r, g, b));
- strip.setPixelColor(pos + 1, strip.Color(r/2, g/2, b/2));
- strip.setPixelColor(pos + 2, strip.Color(r/4, g/4, b/4));
-
- strip.show();
- wait_ms(delay);
- // If we wanted to be sneaky we could erase just the tail end
- // pixel, but it's much easier just to erase the whole thing
- // and draw a new one next time.
- for(j=-2; j<= 2; j++)
- strip.setPixelColor(pos+j, strip.Color(0,0,0));
- // Bounce off ends of strip
- pos += dir;
- if(pos < 0) {
- pos = 1;
- dir = -dir;
- } else if(pos >= strip.numPixels()) {
- pos = strip.numPixels() - 2;
- dir = -dir;
- }
- }
-}
-
-int main() {
-
- // Start up the LED strip
- strip.begin();
-
- // Update the strip, to start they are all 'off'
- strip.show();
- while(1){
-
- colorChase(strip.Color(127,127,127), 100);
-
- // Send a simple pixel chase in...
- colorChase(strip.Color(127,0,0), 100); // full brightness red
- colorChase(strip.Color(127,127,0), 100); // orange
- colorChase(strip.Color(0,127,0), 100); // green
- colorChase(strip.Color(0,127,127), 100); // teal
- colorChase(strip.Color(0,0,127), 100); // blue
- colorChase(strip.Color(127,0,127), 100); // violet
-
- // fill the entire strip with...
- colorWipe(strip.Color(127,0,0), 100); // red
- colorWipe(strip.Color(0, 127,0), 100); // green
- colorWipe(strip.Color(0,0,127), 100); // blue
-
- rainbow(10);
- rainbowCycle(5); // make it go through the cycle fairly fast
-
- // Back-and-forth lights
- scanner(127,0,0, 50); // red, slow
- scanner(0,0,127, 5); // blue, fast
-}
-}
-
+// Mbed program to test LPD8806-based RGB LED Strips
+// (c) 2011 Jelmer Tiete
+// This library is ported from the Arduino implementation of Adafruit Industries
+// found at: http://github.com/adafruit/LPD8806
+// and their strips: http://www.adafruit.com/products/306
+// Released under the MIT License: http://mbed.org/license/mit
+
+/*****************************************************************************/
+
+#include "LPD8806.h"
+
+LPD8806 strip = LPD8806(5);
+
+// Chase a dot down the strip
+// good for testing purposes
+void colorChase(uint32_t c, uint8_t delay) {
+ int i;
+
+ for (i=0; i < strip.numPixels(); i++) {
+ strip.setPixelColor(i, 0); // turn all pixels off
+ }
+
+ for (i=0; i < strip.numPixels(); i++) {
+ strip.setPixelColor(i, c);
+ if (i == 0) {
+ strip.setPixelColor(strip.numPixels()-1, 0);
+ } else {
+ strip.setPixelColor(i-1, 0);
+ }
+ strip.show();
+ wait_ms(delay);
+ }
+}
+
+// fill the dots one after the other with said color
+// good for testing purposes
+void colorWipe(uint32_t c, uint8_t delay) {
+ int i;
+
+ for (i=0; i < strip.numPixels(); i++) {
+ strip.setPixelColor(i, c);
+ strip.show();
+ wait_ms(delay);
+ }
+}
+
+//Input a value 0 to 384 to get a color value.
+//The colours are a transition r - g -b - back to r
+
+uint32_t Wheel(uint16_t WheelPos) {
+ uint8_t b=0;
+ uint8_t g=0;
+ uint8_t r = 0;
+ switch (WheelPos / 128) {
+ case 0:
+ r = 127 - WheelPos % 128; //Red down
+ g = WheelPos % 128; // Green up
+ b = 0; //blue off
+ break;
+ case 1:
+ g = 127 - WheelPos % 128; //green down
+ b = WheelPos % 128; //blue up
+ r = 0; //red off
+ break;
+ case 2:
+ b = 127 - WheelPos % 128; //blue down
+ r = WheelPos % 128; //red up
+ g = 0; //green off
+ break;
+ }
+ return(strip.Color(r,g,b));
+}
+
+void rainbow(uint8_t delay) {
+ int i, j;
+
+ for (j=0; j < 384; j++) { // 3 cycles of all 384 colors in the wheel
+ for (i=0; i < strip.numPixels(); i++) {
+ strip.setPixelColor(i, Wheel( (i + j) % 384));
+ }
+ strip.show(); // write all the pixels out
+ wait_ms(delay);
+ }
+}
+
+// Slightly different, this one makes the rainbow wheel equally distributed
+// along the chain
+void rainbowCycle(uint8_t delay) {
+ uint16_t i, j;
+
+ for (j=0; j < 384 * 5; j++) { // 5 cycles of all 384 colors in the wheel
+ for (i=0; i < strip.numPixels(); i++) {
+ // tricky math! we use each pixel as a fraction of the full 384-color wheel
+ // (thats the i / strip.numPixels() part)
+ // Then add in j which makes the colors go around per pixel
+ // the % 384 is to make the wheel cycle around
+ strip.setPixelColor(i, Wheel( ((i * 384 / strip.numPixels()) + j) % 384) );
+ }
+ strip.show(); // write all the pixels out
+ wait_ms(delay);
+ }
+}
+
+// "Larson scanner" = Cylon/KITT bouncing light effect
+void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t delay) {
+ int i, j, pos, dir;
+
+ pos = 0;
+ dir = 1;
+
+ for (i=0; i<((strip.numPixels()-1) * 8); i++) {
+ // Draw 5 pixels centered on pos. setPixelColor() will clip
+ // any pixels off the ends of the strip, no worries there.
+ // we'll make the colors dimmer at the edges for a nice pulse
+ // look
+ strip.setPixelColor(pos - 2, strip.Color(r/4, g/4, b/4));
+ strip.setPixelColor(pos - 1, strip.Color(r/2, g/2, b/2));
+ strip.setPixelColor(pos, strip.Color(r, g, b));
+ strip.setPixelColor(pos + 1, strip.Color(r/2, g/2, b/2));
+ strip.setPixelColor(pos + 2, strip.Color(r/4, g/4, b/4));
+
+ strip.show();
+ wait_ms(delay);
+ // If we wanted to be sneaky we could erase just the tail end
+ // pixel, but it's much easier just to erase the whole thing
+ // and draw a new one next time.
+ for (j=-2; j<= 2; j++)
+ strip.setPixelColor(pos+j, strip.Color(0,0,0));
+ // Bounce off ends of strip
+ pos += dir;
+ if (pos < 0) {
+ pos = 1;
+ dir = -dir;
+ } else if (pos >= strip.numPixels()) {
+ pos = strip.numPixels() - 2;
+ dir = -dir;
+ }
+ }
+}
+
+int main() {
+
+ // Start up the LED strip
+ strip.begin();
+
+ // Update the strip, to start they are all 'off'
+ strip.show();
+ while (1) {
+
+ colorChase(strip.Color(127,127,127), 100);
+
+ // Send a simple pixel chase in...
+ colorChase(strip.Color(127,0,0), 100); // full brightness red
+ colorChase(strip.Color(127,127,0), 100); // orange
+ colorChase(strip.Color(0,127,0), 100); // green
+ colorChase(strip.Color(0,127,127), 100); // teal
+ colorChase(strip.Color(0,0,127), 100); // blue
+ colorChase(strip.Color(127,0,127), 100); // violet
+
+ // fill the entire strip with...
+ colorWipe(strip.Color(127,0,0), 100); // red
+ colorWipe(strip.Color(0, 127,0), 100); // green
+ colorWipe(strip.Color(0,0,127), 100); // blue
+
+ rainbow(10);
+ rainbowCycle(5); // make it go through the cycle fairly fast
+
+ // Back-and-forth lights
+ scanner(127,0,0, 50); // red, slow
+ scanner(0,0,127, 5); // blue, fast
+ }
+}
+