FastLED (FastLED) errors

3 recurring problems engineers report in FastLED (FastLED), ranked by impact.

#169 by errors trackedVerification

Recurring FastLED (FastLED) errors, by impact

  1. 1On STM32 with hardware SPI, SPI.begin puts pins in alternate function, then writeBit drove them through FastPin ODR writes which do not reach the pads in that mode, so FLAG_START_BIT output could be lost. The schematic D0 and the library D0 were not the same copper.Verification · Agent failure · 1 report66
  2. 2One generic pin table drove the wrong pad on Silicon Labs boards because the vendor core maps Arduino pins per variant, so FastPin drove a different pad than digitalWrite. On the SparkFun Thing Plus Matter, D0 is PC7 not PA0 and D8 is PD0 not PB0.Verification · Agent failure · 1 report66
  3. 3The same pin-mux problem as #5175 occurs on SAM3X, where SPI pin-mux writes never reached the pads. Mentioned in the #5173 and #5175 finding as the same failure on another platform.Verification · Agent failure · 1 report66

How it fails

  1. Agent failure3

Sourced from public community reports. Costs and delays on individual entries are modeled estimates, not measurements.