Uses APB clock source for shorter pulse lengths

[JoeyStrandnes]

Utilizes APB clock source

The default configuration did not allow for short enough pulses when sending data to WS2812B LED's

Changes

• APB clock source
• Updated timings for T0H, T1H & TL
• Changes clock divide from 2 to 1

Tests

• Compiles and runs on ESP32s2 (Not tested on regular ESP32)
• Checked timings according to WS2812B datasheet
• Tested on 136 WS2812B/ WS2812B-MINI LED's

APB clock source

Standard clock source

[lukecyca]

Thanks for this. I am now using it and it seems to be a good improvement.

[bcran]

I see this was closed without being merged, but it looks like a good improvement.