Diff: LUTs/LUTS.cpp

Revision:

11:6ae098535da9

Parent:

10:258a1eca02cc

Child:

14:9cfe0041cc4e

--- a/LUTs/LUTS.cpp	Wed May 06 19:51:22 2020 +0000
+++ b/LUTs/LUTS.cpp	Thu May 07 12:22:39 2020 +0000
@@ -9,12 +9,13 @@
 }
 volatile uint16_t sin_wavtable[1024];
 volatile uint16_t tri_wavtable[1024];
-
+volatile uint16_t pulse_wavtable[1024];
 
 void LUTs::initial_wavetables()
 {
     sin_wavetable();
     tri_wavetable(50);
+    pulse_wavetable(50);
 }
 
 void LUTs::sin_wavetable()
@@ -48,20 +49,38 @@
     printf("Generating Tri-wavetable\n");
     tri_wavtable[0]=0;
     rise_t=(pulsewidth*1024/100);
-    fall_t=1-rise_t;
+    rise_tu=(uint16_t)rise_t;
+    fall_tu=1-rise_tu;
     dif=65536/rise_t;
     dif_u=(uint16_t)dif;
-    for (int i=1; i<rise_t; i++) {
+    for (int i=1; i<=rise_tu; i++) {
         tri_wavtable[i]=tri_wavtable[i-1]+dif_u;
     }
-    dif=65536/fall_t;
+    dif=65536/fall_tu;
     dif_u=(uint16_t)dif;
-    for (int i=rise_t; i<1024; i++) {
+    for (int i=rise_t+1; i<1024; i++) {
         tri_wavtable[i]=tri_wavtable[i-1]-dif_u;
     }
 }
 
 
+void LUTs::pulse_wavetable(int pulsewidth)
+{
+    printf("Generating Pulse-wavetable\n");
+    up_t=(pulsewidth*1024/100);
+    up_tu=(uint16_t)up_t;
+    for (int i=0; i<=up_tu; i++) {
+        pulse_wavtable[i]=65535;
+        //printf("up itt = %d\n",i);
+    }
+    
+    for (int i=up_tu+1; i<1024; i++) {
+        pulse_wavtable[i]=0;
+        //printf("down itt = %d\n",i);
+    }
+}
+
+
 /*
 uint16_t get_sin(int i)
 {