moved loadData into interrupt

src/extras/Pixel.cpp

@@ -8,11 +8,11 @@ Pixel::Pixel(int pin, uint32_t nPixels){
   rf=new RFControl(pin,false,false);          // set clock to 1/80 usec, no default driver
   setTiming(0.32, 0.88, 0.64, 0.56, 80.0);    // set default timing parameters (suitable for most SK68 and WS28 RGB pixels)
 
-  rmt_isr_register(isrHandler,(void *)this,0,NULL);     // end-transmission interrupt automatically enabled by rmt_tx_start
+  rmt_isr_register(loadData,(void *)this,0,NULL);       // set custom interrupt handler
-  rmt_set_tx_thr_intr_en(rf->getChannel(),true,8);      // need to also enable threshold interrupt
+  rmt_set_tx_thr_intr_en(rf->getChannel(),true,8);      // enable threshold interrupt (note end-transmission interrupt automatically enabled by rmt_tx_start)
 
-  channelNum=rf->getChannel();
+  channelNum=rf->getChannel();          // save integer form of channel number
-  txEndMask=TxEndMask(channelNum);
+  txEndMask=TxEndMask(channelNum);      // create bit mask for end-of-transmission interrupt specific to this channel
 
 }
 
@@ -54,8 +54,11 @@ void Pixel::setColors(const uint32_t *data, uint32_t nPixels){
   status.iBit=24;
   status.started=true;
 
-  loadData();             // load first 2 bytes
+//  loadData();             // load first 2 bytes
-  loadData();
+//  loadData();
+
+  loadData(this);
+  loadData(this);
 
   rmt_tx_start(rf->getChannel(),true);
 
@@ -120,27 +123,7 @@ uint32_t Pixel::getColorHSV(float h, float s, float v){
 
 ///////////////////
 
-void Pixel::loadData(){
+void Pixel::loadData(void *arg){
-  
-  if(status.nPixels==0){
-    RMTMEM.chan[channelNum].data32[status.iMem].val=0;
-    return;
-  }
-  
-  for(int i=0;i<8;i++)
-    RMTMEM.chan[channelNum].data32[status.iMem++].val=pattern[(*status.data>>(--status.iBit))&1];
-    
-  if(status.iBit==0){
-    status.iBit=24;
-    status.data++;
-    status.nPixels--;    
-  }
-  status.iMem%=memSize;
-}
-
-///////////////////
-
-void Pixel::isrHandler(void *arg){
 
   Pixel *pix=(Pixel *)arg;
 
@@ -151,7 +134,22 @@ void Pixel::isrHandler(void *arg){
   }
   
   RMT.int_clr.val=~0;
-  pix->loadData();
+
+  if(status.nPixels==0){
+    RMTMEM.chan[pix->channelNum].data32[status.iMem].val=0;
+    return;
+  }
+  
+  for(int i=0;i<8;i++)
+    RMTMEM.chan[pix->channelNum].data32[status.iMem++].val=pix->pattern[(*status.data>>(--status.iBit))&1];
+    
+  if(status.iBit==0){
+    status.iBit=24;
+    status.data++;
+    status.nPixels--;    
+  }
+  
+  status.iMem%=pix->memSize;    
 }
 
 ///////////////////

src/extras/Pixel.h

@@ -42,7 +42,7 @@ class Pixel {
 
     volatile static pixel_status_t status;
     
-    static void isrHandler(void *arg);         // interrupt handler 
+    static void loadData(void *arg);            // interrupt handler 
     void loadColor(uint32_t c, uint32_t *p);    // creates pulse pattern for pixel color (encoded as RGB in low 24-bits of *p)
   
   public:
@@ -58,8 +58,6 @@ class Pixel {
     static uint32_t getColorRGB(uint8_t r, uint8_t g, uint8_t b);    // return pixel Color from RGB values
     static uint32_t getColorHSV(float h, float s, float v);          // return pixel Color from HSV values
     
-    void loadData();
-
     operator bool(){         // override boolean operator to return true/false if creation succeeded/failed
       return(*rf);
     }

src/extras/extras.ino

@@ -99,13 +99,13 @@ void setup() {
 
   uint32_t colors[20];
 
-  colors[0]=px.getColorRGB(40,40,0);
+  colors[0]=px.getColorRGB(40,0,0);
-  colors[1]=px.getColorRGB(40,40,0);
+  colors[1]=px.getColorRGB(40,0,0);
   colors[2]=px.getColorRGB(40,0,0);
-  colors[3]=px.getColorRGB(0,0,40);
+  colors[3]=px.getColorRGB(40,40,0);
-  colors[4]=px.getColorRGB(40,0,0);
+  colors[4]=px.getColorRGB(40,40,0);
-  colors[5]=px.getColorRGB(40,0,0);
+  colors[5]=px.getColorRGB(40,40,0);
-  colors[6]=px.getColorRGB(40,0,0);
+  colors[6]=px.getColorRGB(0,40,0);
   colors[7]=px.getColorRGB(0,40,0);
   
   px.setColors(colors,8);