#191 Establish better ws2812b signal timing (round 1)

parallaxinc · May 9, 2019 · 616ec0c · 616ec0c
1 parent 948a8ec
commit 616ec0c
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Showing 4 changed files with 32 additions and 2 deletions.
diff --git a/Learn/Simple Libraries/Light/libws2812/cmm/libws2812.a b/Learn/Simple Libraries/Light/libws2812/cmm/libws2812.a
diff --git a/Learn/Simple Libraries/Light/libws2812/ws2812.c b/Learn/Simple Libraries/Light/libws2812/ws2812.c
@@ -31,6 +31,7 @@ typedef struct {
 // -- ns1h is 1-bit high timing (ns)
 // -- ns1l is 1-bit low timing (ns)
 // -- type is TYPE_GRB for ws2812 or ws2812b
+// ws_start(state, 50, 350, 900, 900, 350, TYPE_GRB);  // for ws2812b
 int ws_start(ws2812_t *state, int usreset, int ns0h, int ns0l, int ns1h, int ns1l, int type)
 {
     extern uint32_t binary_ws2812_driver_dat_start[];

diff --git a/Learn/Simple Libraries/Light/libws2812/ws2812b_start.c b/Learn/Simple Libraries/Light/libws2812/ws2812b_start.c
@@ -15,7 +15,36 @@
 
 int ws2812b_start(ws2812_t *state)
 {
-    return ws_start(state, 50, 350, 900, 900, 350, TYPE_GRB);
+
+  /*
+     This is a temporary fix until a more suitable CogC
+     or PASM driver replaces the existing one.  Tuning 
+     actual vs. requested stays here until y = mx + b 
+     is either ruled out or implemented.  
+  */
+
+  // usreset, ns0h, ns0l, ns1h, ns1l, int type)
+  //return ws_start(state, 50, 350, 900, 900, 350, TYPE_GRB);
+  //return ws_start(state, 280, 410, 875, 875, 410, TYPE_GRB);
+
+  //                            523, 1070, 1040, 563, 
+  //return ws_start(state, 280, 410,  875,  875, 410, TYPE_GRB);
+  //                            461, 1015,  789, 398, 
+  //return ws_start(state, 280, 300,  675,  600, 260, TYPE_GRB);
+  //                            375, 1250, 1160, 414, 
+  //return ws_start(state, 280, 250,  600,  700, 270, TYPE_GRB);
+  //                            406, 1270, 1120, 440, 
+  //return ws_start(state, 280, 275,  600,  700, 270, TYPE_GRB);
+  //                            411,  871,  892, 429, 
+  //return ws_start(state, 280, 300,  670,  725, 275, TYPE_GRB);
+  //                            418,  860,  878, 414, 
+  //return ws_start(state, 280, 300,  670,  715, 265, TYPE_GRB);
+  //                            404,  871,  878, 407, 
+  //return ws_start(state, 280, 295,  675,  715, 265, TYPE_GRB);
+
+  //               want       410,  875,  875,  410          
+  //               measured   404,  871,  878,  408, 
+  return ws_start(state, 280, 300,  675,  715,  270, TYPE_GRB);
 }
 
 /**

diff --git a/version.txt b/version.txt
@@ -1 +1 @@
-v1.4.125
+v1.4.126