SPI sketch

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <FS.h>
#include <Hash.h>
#include <NeoPixelBus.h>

NeoPixelBus<DotStarBgrFeature, DotStarSpiMethod> strip(144);

static int Current_imageLine=0;
static uint32_t _raw_location;
uint8_t  * LED_BUFFER;
static uint32_t _memory_pointer=0,frame_time=0;
IPAddress apIP(192, 168, 4, 1);
void setup() {
Serial.begin(115200);
delay(500);
Serial.setDebugOutput(true);
Serial.println(F("\n \nStarting....."));
SPIFFS.begin();
strip.Begin();
WiFi.mode(WIFI_AP);
WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
WiFi.softAP("ESP_SPI","12345678");
delay(500);
Serial.print("AP IP address: ");Serial.println(WiFi.softAPIP());
                  _raw_location=(ESP.getSketchSize() + FLASH_SECTOR_SIZE - 1) & (~(FLASH_SECTOR_SIZE - 1));
  _memory_pointer=_raw_location;
  Serial.printf("New Start Address= %u\n",_raw_location);
  LED_BUFFER = (uint8_t *)malloc(432);
}
void loop()
{
  ESP.flashRead(_memory_pointer,(uint32_t *) LED_BUFFER,432);  // it took around 13ms
  for( int i = 0;i<432;  )    strip.SetPixelColor(i/3, RgbColor((byte)LED_BUFFER[i++], (byte)LED_BUFFER[i++],(byte)LED_BUFFER[i++])  );
  strip.Show();
/*
code of source  lib
https://github.com/Makuna/NeoPixelBus/blob/70e3611bdff0274ac7e75700f83d7af680611547/src/internal/DotStarSpiMethod.h#L67-L90
*/
  _memory_pointer+=(432);
  Current_imageLine++;
  if(Current_imageLine>=200)
  {
    Serial.printf("\nFrame took %u ms line=%d\n",  micros() - frame_time,Current_imageLine);
                   //Frame took 241860 ms line=200
    Current_imageLine=0;
    _memory_pointer=_raw_location;
    frame_time=micros();
  }
}