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ws2812: support high-MHz ARMv6M chips like the RP2040 #391

Merged
merged 1 commit into from
Mar 10, 2022
Merged

ws2812: support high-MHz ARMv6M chips like the RP2040 #391

merged 1 commit into from
Mar 10, 2022

Commits on Mar 1, 2022

  1. ws2812: support high-MHz ARMv6M chips like the RP2040 

    The possible branch distance is a lot shorter on ARMv6M (Cortex-M and
Cortex-M0+) for conditional branches. Therefore, convert this long
conditional branch into an unconditional branch.

This probably makes the code a little bit slower but because it is in
the low period of the WS2812 signal it shouldn't matter for the
protocol. And it avoids difficult workarounds specifically for the
RP2040.
    @aykevl
    aykevl committed Mar 1, 2022
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