From cf00e8a41b75e7ffb778cd0c48802a1f65281da3 Mon Sep 17 00:00:00 2001
From: Andrew Melvin <amelvin@Andrew-MBA.local>
Date: Thu, 27 Aug 2015 07:30:16 +0100
Subject: [PATCH] not working

---
 NeoPixelBus.cpp                      | 35 ++++++++++++++++++----------
 NeoPixelBus.h                        |  2 +-
 NeoPixelesp8266uart.cpp              | 20 ++++++++++++----
 examples/NeoPixelFun/NeoPixelFun.pde | 17 ++++++++++++--
 4 files changed, 55 insertions(+), 19 deletions(-)

diff --git a/NeoPixelBus.cpp b/NeoPixelBus.cpp
index 4d08f24..aae3e05 100644
--- a/NeoPixelBus.cpp
+++ b/NeoPixelBus.cpp
@@ -42,7 +42,7 @@ License along with NeoPixel.  If not, see
         #define UART_INV_MASK  (0x3f<<19)
         #define UART 1
 
-        extern void ICACHE_RAM_ATTR send_pixels_UART(uint8_t* pixels, uint8_t* end);
+        extern void ICACHE_RAM_ATTR send_pixels_UART(uint8_t* pixels, uint8_t* end, bool force);
 
     #else
         // due to linker overriding the ICACHE_RAM_ATTR for cpp files, these methods are
@@ -98,6 +98,17 @@ NeoPixelBus::~NeoPixelBus()
 
 }
 
+
+void NeoPixelBus::FillUart(void) {
+    
+    uint8_t* p = _pixels;
+    uint8_t* end = p + _sizePixels;
+
+    send_pixels_UART(p, end, false);
+
+}
+
+
  void NeoPixelBus::Begin(void) 
  {
 
@@ -785,21 +796,21 @@ void NeoPixelBus::Show(void)
         send_pixels_800(p, end, _pin);
 #else 
 
-        send_pixels_UART(p, end);
+        send_pixels_UART(p, end,true);
 
-    char buff[4];
+    // char buff[4];
 
-    do
-    {
-        uint8_t subpix = *p++;
+    // do
+    // {
+    //     uint8_t subpix = *p++;
 
-        buff[0] = data[(subpix >> 6) & 3];
-        buff[1] = data[(subpix >> 4) & 3];
-        buff[2] = data[(subpix >> 2) & 3];
-        buff[3] = data[subpix & 3];
-        Serial1.write(buff, sizeof(buff));    
+    //     buff[0] = data[(subpix >> 6) & 3];
+    //     buff[1] = data[(subpix >> 4) & 3];
+    //     buff[2] = data[(subpix >> 2) & 3];
+    //     buff[3] = data[subpix & 3];
+    //     Serial1.write(buff, sizeof(buff));    
 
-    } while (p < end);
+    // } while (p < end);
 
 #endif 
 
diff --git a/NeoPixelBus.h b/NeoPixelBus.h
index 0d9bc93..f0b2f79 100644
--- a/NeoPixelBus.h
+++ b/NeoPixelBus.h
@@ -61,7 +61,7 @@ public:
     {
         ClearTo(c.R, c.G, c.B);
     }
-
+    void FillUart();
     bool IsDirty()
     {
         return  (_flagsPixels & NEO_DIRTY);
diff --git a/NeoPixelesp8266uart.cpp b/NeoPixelesp8266uart.cpp
index 3be509b..57b9c37 100644
--- a/NeoPixelesp8266uart.cpp
+++ b/NeoPixelesp8266uart.cpp
@@ -33,21 +33,33 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 const char data[4] = { 0b00110111, 0b00000111, 0b00110100, 0b00000100 };
 
 
-void ICACHE_RAM_ATTR send_pixels_UART(uint8_t* pixels, uint8_t* end)
+void ICACHE_RAM_ATTR send_pixels_UART(uint8_t* pixels, uint8_t* end, bool force)
 {
     char buff[4];
-    
+    uint8_t count = 0; 
+    static uint8_t* position = NULL; 
+
+
+    if (position != NULL && !force ) { 
+        pixels = position; 
+    } else if (position == NULL && !force )  {
+        return;
+    } 
+
     do
     {
         uint8_t subpix = *pixels++;
-
+        position = pixels; 
+        count++; 
         buff[0] = data[(subpix >> 6) & 3];
         buff[1] = data[(subpix >> 4) & 3];
         buff[2] = data[(subpix >> 2) & 3];
         buff[3] = data[subpix & 3];
         Serial1.write(buff, sizeof(buff));    
 
-    } while (pixels < end);
+    } while (pixels < end || count < 156 );
+
+    if ( pixels ==  end) { position = NULL; }
 
 }
 
diff --git a/examples/NeoPixelFun/NeoPixelFun.pde b/examples/NeoPixelFun/NeoPixelFun.pde
index b97ec40..89a2afe 100644
--- a/examples/NeoPixelFun/NeoPixelFun.pde
+++ b/examples/NeoPixelFun/NeoPixelFun.pde
@@ -1,8 +1,8 @@
 #include <NeoPixelBus.h>
 
-#define pixelCount 4
+#define pixelCount 300
 
-NeoPixelBus strip = NeoPixelBus(pixelCount, 8);
+NeoPixelBus strip = NeoPixelBus(pixelCount, 2);
 uint16_t effectState = 0;
 
 
@@ -13,6 +13,7 @@ void setup()
   SetRandomSeed();
 }
 
+uint32_t update_strip_time; 
 
 void loop()
 {
@@ -33,6 +34,18 @@ void loop()
     strip.Show();
     delay(31); // ~30hz change cycle
   }
+
+  if (  (millis() - update_strip_time > 30) ) {
+
+     strip.UpdateAnimations(); 
+  
+    strip.Show();  // takes 6ms with 200, take 12ms with 400 ----> so 100 takes 3ms. 
+    //  one LED takes 30uS of nointeruppts, 100 takes 3ms. 
+    update_strip_time = millis();
+  
+  } 
+  
+ strip.FillUart();
  
 }