Diff: WS2811.cpp

Revision:

0:c6a6fa47dadc

Child:

1:165513b4e20a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WS2811.cpp	Fri Apr 15 17:55:30 2016 +0000
@@ -0,0 +1,55 @@
+/*
+*           Creator: Matthias Hemmer
+*           created: 15.04.2016
+*       
+*   function: write a register of 8 bits to the WS2811 RGBs 
+*/
+#include "mbed.h"
+#include "WS2811.h"
+
+uint8_t ledmatrix[3][3];
+
+DigitalOut myled(p20);
+
+void writeled(int pos, uint8_t g, uint8_t r, uint8_t b){    // define the register
+    ledmatrix[pos][0] = g;      // green register
+    ledmatrix[pos][1] = r;      // red register
+    ledmatrix[pos][2] = b;      // blue register
+}
+
+void writeledbit(char wert){
+    
+    if(wert){           // example: if(1) than make what is declatrated
+        myled = 1;
+            for(int i=0;i<HIGH_SIGNAL;i++) __nop();     // wait is to slow, becouse reset = 50µs
+        myled = 0;
+            for(int i=0;i<LOW_SIGNAL;i++) __nop();
+    }
+    
+    else{   // else make this
+        myled = 1;
+            for(int i=0;i<LOW_SIGNAL;i++) __nop();
+        myled = 0;
+            for(int i=0;i<HIGH_SIGNAL;i++) __nop();
+    }
+}
+
+void sendColours(int pos, uint8_t r, uint8_t g, uint8_t b){
+            writeled(pos, g, r, b);     // call the underprogramm
+    
+    for(int led = 0; led < LED_MAX; led++){     // write the matrix on the RGBs
+        for(int i = 0; i < 3; i++){         // write the position
+            for(int b = 0; b < 8; b++){     // write the bit
+                writeledbit(ledmatrix[led][i] & 1<<b);  // write the byte on the RGBs
+            }
+        }
+    }
+    wait(DELAY);        // wait for the supply voltage
+}
+
+void off(){     // set all RGBs off
+        sendColours(0, 0, 0, 0);
+        sendColours(1, 0, 0, 0);
+        sendColours(2, 0, 0, 0); 
+        wait(0.5);
+}
\ No newline at end of file