ws2812: support high-MHz ARMv6M chips like the RP2040 #391
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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.
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Thanks @aykevl |
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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.