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ports/rp2/WAVESHARE_RP2350_PIZERO: add board definition#19211

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ports/rp2/WAVESHARE_RP2350_PIZERO: add board definition#19211
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@duskwuff duskwuff commented May 11, 2026

Summary

Adds a port for the Waveshare RP2350-PiZero board.

Testing

I've tested this board definition on boards with and without PSRAM mounted and verified that it works correctly in both cases. Internal flash is exposed over MSC, and the SD card can be mounted and viewed using:

import os, sdcard
from machine import Pin, SPI
sd_spi = SPI(1, sck=Pin("SD_CLK", Pin.OUT), miso=Pin("SD_MISO", Pin.OUT), mosi=Pin("SD_MOSI", Pin.IN, pull=Pin.PULL_UP))
os.mount(sdcard.SDCard(spi=sd_spi, cs=Pin("SD_CS", Pin.OUT)), "/sd")

Trade-offs and Alternatives

None?

The MICROPY_HW_USB_MSC configuration might be worth enabling by default for all RP2350 ports.

Generative AI

No AI tools were used in preparing this pull request.

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github-actions Bot commented May 11, 2026 •
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Code size report:

Reference:  py/emitinlinerv32: Fix UBsan diagnostics for left-shift of mp_int_t. [8ecd995]
Comparison: rp2/boards/WAVESHARE_RP2350_PIZERO: Add board definition. [merge of 8876c7f]
  mpy-cross:    +0 +0.000% 
   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
      esp32:    +0 +0.000% ESP32_GENERIC
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO_W
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
  qemu rv32:    +0 +0.000% VIRT_RV32

@duskwuff
rp2/boards/WAVESHARE_RP2350_PIZERO: Add board definition.
8876c7f 
Signed-off-by: dusk <dusk@woofle.net>
@agatti agatti added port-rp2 board-definition New or updated board definition files. Combine with a port- label. labels May 11, 2026
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board-definition New or updated board definition files. Combine with a port- label. port-rp2

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@duskwuff @agatti