Joel Rosiene
Routines to drive a chain of APA102 Leds.
Fork of
APA102
by 
Joel Rosiene
A library to drive arrays of APA102 leds.
Revision 3:bf8c63d10824, committed 2015-03-14
- Comitter:
- rosienej
- Date:
- Sat Mar 14 18:17:53 2015 +0000
- Parent:
- 2:b8dc9a84801c
- Child:
- 4:2afea45fce8f
- Commit message:
- Rename to avoid other published library
Changed in this revision
--- a/APA102.cpp Wed Mar 11 14:25:18 2015 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,60 +0,0 @@
-#include "APA102.h"
-#include "mbed.h"
-
-APA102::APA102(PinName mosi,PinName miso,PinName sclk,int rate)
- : _spi(mosi, miso, sclk)
-
- {
- // Setup the spi for 8 bit data, high steady state clock,
- // second edge capture, with a 1MHz clock rate
- _spi.format(8,3);
- _spi.frequency(rate);
- }
-
-void APA102::SetBuffer(unsigned int Buffer[],int Rows,int Cols, int Stride,int Offset, bool ZigZag,bool Wrap)
-{
- Buf = Buffer;
- NR = Rows;
- NC = Cols;
- NS = Stride;
- off = Offset;
- ZF = ZigZag;
- WF = Wrap;
- }
-
-void APA102::Repaint()
-{
- int index;
- unsigned int val;
-
- _spi.write(0X00); // Start
- _spi.write(0X00);
- _spi.write(0X00);
- _spi.write(0X00);
-
- for(int r = 0;r<NR;r++)
- {
- for(int c = off;c<(NC+off);c++)
- {
- int cc = (WF)?(c%NS):((c<NS)?c:NS);
- if (ZF)
- if((r&0x01)>0)
- index = r*NS + NC+off-cc;
- else
- index = r*NS + cc;
- else
- index = r*NS + cc;
-
- val = Buf[index];
- _spi.write((val>>24)&0xFF);
- _spi.write((val>>16)&0xFF);
- _spi.write((val>>8)&0xFF);
- _spi.write(val&0xFF);
- }
- }
- _spi.write(0XFF); // Stop
- _spi.write(0XFF);
- _spi.write(0XFF);
- _spi.write(0XFF);
-
-}
\ No newline at end of file
--- a/APA102.h Wed Mar 11 14:25:18 2015 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,64 +0,0 @@
-#ifndef MBED_APA102_H
-
-#define MBED_PING_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
- *
- * @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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/APA102a.cpp Sat Mar 14 18:17:53 2015 +0000
@@ -0,0 +1,60 @@
+#include "APA102a.h"
+#include "mbed.h"
+
+APA102::APA102(PinName mosi,PinName miso,PinName sclk,int rate)
+ : _spi(mosi, miso, sclk)
+
+ {
+ // Setup the spi for 8 bit data, high steady state clock,
+ // second edge capture, with a 1MHz clock rate
+ _spi.format(8,3);
+ _spi.frequency(rate);
+ }
+
+void APA102::SetBuffer(unsigned int Buffer[],int Rows,int Cols, int Stride,int Offset, bool ZigZag,bool Wrap)
+{
+ Buf = Buffer;
+ NR = Rows;
+ NC = Cols;
+ NS = Stride;
+ off = Offset;
+ ZF = ZigZag;
+ WF = Wrap;
+ }
+
+void APA102::Repaint()
+{
+ int index;
+ unsigned int val;
+
+ _spi.write(0X00); // Start
+ _spi.write(0X00);
+ _spi.write(0X00);
+ _spi.write(0X00);
+
+ for(int r = 0;r<NR;r++)
+ {
+ for(int c = off;c<(NC+off);c++)
+ {
+ int cc = (WF)?(c%NS):((c<NS)?c:NS);
+ if (ZF)
+ if((r&0x01)>0)
+ index = r*NS + NC+off-cc;
+ else
+ index = r*NS + cc;
+ else
+ index = r*NS + cc;
+
+ val = Buf[index];
+ _spi.write((val>>24)&0xFF);
+ _spi.write((val>>16)&0xFF);
+ _spi.write((val>>8)&0xFF);
+ _spi.write(val&0xFF);
+ }
+ }
+ _spi.write(0XFF); // Stop
+ _spi.write(0XFF);
+ _spi.write(0XFF);
+ _spi.write(0XFF);
+
+}
\ No newline at end of file
--- /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