Diff: APA102a.h

Revision:

3:bf8c63d10824

Child:

4:2afea45fce8f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/APA102a.h	Sat Mar 14 18:17:53 2015 +0000
@@ -0,0 +1,64 @@
+#ifndef MBED_APA102a_H
+
+#define MBED_APA102a_H
+ 
+#include "mbed.h"
+
+
+
+/** Create an APA102 Object 
+    */ 
+ class APA102{
+  public:
+/** Create an APA102 object connected to the specified mosi,miso,sclk pins
+    *
+    * @param mosi : SPI Master Out Slave In pin
+    * @param miso : SPI Master In Slave Out pin (ignored)
+    * @param sclk : SPI Clock
+    * @param rate : SPI Rate
+    */
+     APA102(PinName mosi,PinName miso,PinName sclk,int rate);
+       
+/** Set the Buffer
+     *
+     * @param buffer[] : a buffer of unsigned integers (4 bytes) *Rows*Stride in size
+     * @param Rows     : Number of Rows
+     * @param Cols     : Number of Columns
+     * @param Stride   : The actual number of columns (useful for data alignment)
+     * @param Offset   : The offset into a row
+     * @param ZigZag   : A boolean, do we alternate count up/ count down per row?
+     * @param Wrap     : A boolean, do we wrap if (Offset+Cols) > Stride? (handy for scrolling messages)
+     */
+     void SetBuffer(unsigned int Buffer[],int Rows,int Cols, int Stride,int Offset, bool ZigZag,bool Wrap); 
+     
+/** Repaint the Strip
+     *  Sends to the Buffer to the Strip.  
+     * @param none
+     */
+     void Repaint();
+     
+/** Create an IRGB helper function to construct a 4 byte LED Frame
+    *
+    * @param I : 5 bits of intensity (0,1,2,...,31)
+    * @param R : 8 bits of Red   (0,1,...,255)
+    * @param G : 8 bits of Green (0,1,...,255)
+    * @param B : 8 bits of Blue  (0,1,...,255)
+    */
+ 
+int IRGB(unsigned char I,unsigned char R,unsigned char G,unsigned char B) {
+     return ((0xE0 + 0x1F&I)<<24)|((0xFF&R)<<16)|((0xFF&G)<<8)|(0xFF&B);}
+     
+  protected:
+  
+    SPI _spi;
+  private: 
+    int NR;
+    int NC;
+    int NS;
+    int off;
+    bool ZF;
+    bool WF;
+    unsigned int * Buf;
+ };
+ 
+#endif
\ No newline at end of file