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by mmoskal
1541 days ago
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With 80k of firmware, you can just put it all in RAM ;) The M0 is not much slower than M4 when running at the same clock, and the RP2040 can run quite fast. Of course it's different if you comparing to M4F and need float32. If you end up putting code in SPI flash and you need predictable latency, you will need to put ISRs and everything they depend on in RAM [0]. However, if you don't need down-to-microsecond latency, then it's just fine. [0] eg https://github.com/lancaster-university/codal-rp2040/blob/ma... |
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