very slow frame rate for ESP & APA102 with FastLed library

[mkeyno]

hi @Makuna , I'm so sorry to draw issue for my question but I really appreciated for your help and opinion , actually I'm trying to use fastLED lib to drive my APA102 for POV project , I've tried to implement it with ESP, but frame rate is so slow for 144 APA102 pixel, my approach is to read pixel data from SPIFF file without closing it , but result beyond my expectation very slow even with 160Mhz clock following is the serial output and loop code i=0 New Image=1.bin duration=4 [frame]1076598 [frame]1043446 [frame]1044003 [frame]1043555 i=1 New Image=2.bin duration=4 [frame]1057822 [frame]1052909 [frame]1052453 i=2 New Image=3.bin duration=4 [frame]1067164 [frame]1042669 [frame]1043549 [frame]1042468 i=3 New Image=4.bin duration=4 [frame]1059210 [frame]1044297 [frame]1044701 [frame]1044550 i=4 New Image=5.bin duration=4 [frame]1059668 [frame]1042478 [frame]1043678 [frame]1043824 i=5 New Image= duration=0 FILE NOT OPEN i=0 New Image=1.bin duration=4 [frame]1075868 [frame]1044087 [frame]1044103 [frame]1044578 i=1 New Image=2.bin duration=4 [frame]1059307 [frame]1052474 [frame]1052181 i=2 New Image=3.bin duration=4 [frame]1067527 [frame]1042757 [frame]1042843 [frame]1043076 i=3 New Image=4.bin duration=4 [frame]1058051 [frame]1045418 [frame]1046048 [frame]1045034 i=4 New Image=5.bin duration=4 [frame]1059883 [frame]1043249 [frame]1043334 [frame]1043710 i=5 New Image= duration=0 FILE NOT OPEN i=0 New Image=1.bin duration=4

loop code void loop() {

if(!SHOW) server.handleClient();

webSocket.loop();

if(SHOW) { if( (millis()- OpenlastTime) > DURATION[image_index]*1000L ) { FILe.close(); image_index++; if(image_index>IMAGE_NUM) image_index=0;

   Serial.print(F(" i="));  Serial.print(image_index); 
  Serial.print(F(" New Image="));  Serial.print(IMAGES[image_index]);
  Serial.print(F(" duration="));  Serial.println(DURATION[image_index]);

   FILe=SPIFFS.open("/SHOW/"+IMAGES[image_index], "r");
  if(!FILe) Serial.println("FILE NOT OPEN");
  OpenlastTime=millis();
}
if(!Start_new_round && (micros()-lastLineShow)> lineInterval)
                  {
                  int i=0,j=0;
                  byte rgb=0,r,g,b; 
                  while(FILe.available()&& i< (NUM_LEDS*3))
                                                            {
                                                            byte c=FILe.read();
                                                                 if(rgb==0) r=byte(c);
                                                            else if(rgb==1) g=byte(c);
                                                            else if(rgb==2) b=byte(c);
                                                            else           { rgb=0;
                                                                             leds[j] = CRGB(r,g,b);
                                                                             j++; 
                                                                             }
                                                            rgb++;            
                                                            i++;
                                                            }
                  FastLED.show(); lastLineShow=micros();                          
                  Current_imageLine++;                                        
                  }

FastLED.show(); lastLineShow=micros(); } if(Current_imageLine >= IMAGES_LINES)
{ Serial.print("[frame]"); Serial.println((micros()-lastFrameShow)); Current_imageLine = 0; lastFrameShow=micros(); Start_new_round=false; FILe.close(); FILe=SPIFFS.open("/SHOW/"+IMAGES[image_index], "r"); }

}

}

[Makuna]

This has nothing to do with this NeoPixelBus library and is an inappropriate issue to enter here.

I would suggest using either the esp8266 Arduino Gitter or something similar for FastLed library that you are having an issue with.

[mkeyno]

thanks @Makuna yes I know this is nothing to do with your repo but I was hoping to have your idea to what is the best method to read image file lines an fed it to LED and then show it , if you interested I could explain more detail about my approach thanks anyway

[Makuna]

@mkeyno Again, look at gitter link, its a chat system tied to github repos, a better approach to asking this sort of thing and has a wider audience of people of know details of SPIFFs that help you.

Further, you do understand how rude it is to ask a question about another library when I have support for said feature? (see NeoBitmapFile)

[mkeyno]

I'm sorry to be unintentional rube Michel and I was aware for this feature in your lib but as you said before yet not support 4 wire LED chip and that's why I thinking maybe you can share how to handle fast file reading for such purpose , any way I apologize again