Brian Daniels / GEColorEffects

Driver for the GE Color Effects LED lights. Currently it is blocking, but it could be made to be nonblocking.

Dependents:   GEColorEffects_Example GEColorEffects_Example

This library's code is based on Clark Jarvis's program here: http://developer.mbed.org/users/clarkjarvis/code/FRDM_GE_ColorEffects/

Files at this revision

API Documentation at this revision

Revision 1:e56bc0a8c273, committed 2015-07-15

Comitter:
bridadan
Date:
Wed Jul 15 20:04:49 2015 +0000
Parent:
0:3f51641c4e69
Commit message:
Disabling irq around time sensitive parts. Added setBrightness function.

Changed in this revision

GEColorEffects.cpp Show annotated file Show diff for this revision Revisions of this file
GEColorEffects.h Show annotated file Show diff for this revision Revisions of this file 
diff -r 3f51641c4e69 -r e56bc0a8c273 GEColorEffects.cpp
--- a/GEColorEffects.cpp	Mon Feb 16 20:27:53 2015 +0000
+++ b/GEColorEffects.cpp	Wed Jul 15 20:04:49 2015 +0000
@@ -7,6 +7,8 @@
 
 void GEColorEffects::write(int buf[], bool eightBit) {
     int l, r, g, b;
+    
+    __disable_irq();
     for (int i = 0; i < size; i++) {
         l = (buf[i] >> 24) & 0xFF;
         r = (buf[i] >> 16) & 0xFF;
@@ -19,6 +21,7 @@
             sendFrame(i, l, r, g, b);
         }
     }
+    __enable_irq();
 }
 
 // GPIO output to send a logical 0
@@ -50,7 +53,13 @@
         }
     }
 }
- 
+
+void GEColorEffects::setBrightness(unsigned char brightness) {
+    __disable_irq();
+    sendFrame(63, brightness, 0, 0, 0);
+    __enable_irq();
+}
+
 // Send frame of data to control a single pixel
 void GEColorEffects::sendFrame(unsigned char address, unsigned char lumm, unsigned char R, unsigned char G, unsigned char B) {
 // Send "1" value to start Frame

diff -r 3f51641c4e69 -r e56bc0a8c273 GEColorEffects.h
--- a/GEColorEffects.h	Mon Feb 16 20:27:53 2015 +0000
+++ b/GEColorEffects.h	Wed Jul 15 20:04:49 2015 +0000
@@ -7,6 +7,7 @@
     
 public:
     GEColorEffects(PinName pin, int size);
+    void setBrightness(unsigned char brightness);
     void write(int buf[], bool eightBit);
 
 private: