Embedded 101: RP2040 GPIO Guide — Banks, Functions, Electrical Specs & Interrupts
This article introduces RP2040 GPIO pins, pin multiplexing function selection, external interrupts and configurable electrical parameters of IO pads.
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Project description
【Preliminary Note】The original hardware example in this article was written based on the RP2040. The actual hardware used in this hands-on demonstration features the W55RP20 as the main controller chip. The circuit logic and UF2 flashing operation principles are universally applicable, with only the main controller model differing. The original chip model mentioned in the circuit descriptions below is provided for reference purposes only. The RP2040 features 36 multi-function general-purpose input/output pins, which are divided into two groups: QSPI Group: A total of 6 pins, namely QSPI_SS…
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