Understanding the APA102 Superled
Does FastLED implement this string led length dependent end fame as discussed in articles below?

https://cpldcpu.wordpress.com/2014/11/30/understanding-the-apa102-superled/ ‘

Summary
In summary, each update of an APA102 based LED string should consist of the following:

1\. A start frame of 32 zero bits (<0x00> <0x00> <0x00> <0x00>)
2\. A 32 bit LED frame for each LED in the string (<0xE0+brightness> )
3. An end frame consisting of at least (n/2) bits of 1, where n is the number of LEDs in the string.*

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