ELEC2645 (2019/20) / Mbed 2 deprecated el18loc_final

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Dependencies:   mbed

Diff: LUTs/LUTS.cpp

Revision:
15:1c67f064278e
Parent:
14:9cfe0041cc4e
Child:
19:08862f49cd9e
--- a/LUTs/LUTS.cpp	Tue May 19 15:04:33 2020 +0000
+++ b/LUTs/LUTS.cpp	Tue May 19 18:38:33 2020 +0000
@@ -50,17 +50,35 @@
     tri_wavtable[0]=0;
     rise_t=(pulsewidth*1024/100);
     rise_tu=(uint16_t)rise_t;
-    fall_tu=1-rise_tu;
+    fall_tu=1024-rise_tu;
     dif=65536/rise_t;
     dif_u=(uint16_t)dif;
+    
+    #ifdef SLOW_TIME
+    printf("PRINTING TRI WAVETABLE Values\n");
+    printf("PW= %d \n",pulsewidth);
+    printf("Rise Samples= %u\n", rise_tu);
+    printf("Fall Samples= %u\n", fall_tu);
+    printf("UP sample dif= %u\n", dif_u);
+    #endif 
+    
     for (int i=1; i<=rise_tu; i++) {
         tri_wavtable[i]=tri_wavtable[i-1]+dif_u;
     }
     dif=65536/fall_tu;
     dif_u=(uint16_t)dif;
-    for (int i=rise_t+1; i<1024; i++) {
-        tri_wavtable[i]=tri_wavtable[i-1]-dif_u;
+    
+    #ifdef SLOW_TIME
+    printf("down sample dif= %u\n", dif_u);
+    #endif
+    
+    for (int i=rise_tu; i<1024; i++) {
+        tri_wavtable[i]=65535-((i-rise_tu)*dif_u);
     }
+    
+    #ifdef SLOW_TIME
+    tri_wav_results();
+    #endif
 }
 
 
@@ -80,6 +98,13 @@
     }
 }
 
+void LUTs::tri_wav_results() {
+    printf("TRI_WAV_RESULTS:\n");
+    printf("i,out\n");
+    for (i=0; i<=1024; i=i+64) {
+        printf("%d, %u\n",i,tri_wavtable[i]);
+        }
+    }
 
 /*
 uint16_t get_sin(int i)