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Comment This is something new (Score 5, Insightful) 145

The RP2040 does things that an STM32 or ESP can't. The big feature for me is the programmable state machine on each IO pin. It allows deterministic timing for custom protocols. You can implement WS2812, DVI or whatever new serial protocol comes along without loading down the main processor. It could also be used for motor control or a SMPS driver that requires tight timings and fast updates. There are other microcontrollers that do this like the PSoC or Propeller 2 but they are more than double the price.

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