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ESP32 board words for GPIO, ADC, timing, UART, I2C, and PWM.

This section is a lookup table for the hardware words currently worth documenting publicly.

Start with the simple board surface:

  • Base image for seeded pins, LED helpers, ADC, timing, and convenience words
  • GPIO for digital input and output
  • Timing for ms and millis

Then use the more specific peripheral pages only when your circuit needs them:

  • I2C for sensors and register-style devices
  • UART for auxiliary serial devices
  • PWM and LEDC for brightness and servo-style pulse work

Examples use esp32_devkit_v1 because that is the board identifier used during development. It names the development-board shape, not a promise that only that exact retail board can work. Most classic Tensilica ESP32 dev boards should be plausible. Newer RISC-V ESP32 variants have not been tried yet.

01

Base Image

Seeded pins, timing, GPIO, LED, and ADC helpers that live in the board base image.

05

GPIO

Digital pin input and output words, plus the Frothy helper layer over them.

06

Timing

Board timing words for sleeping and reading monotonic uptime.

09

I2C

Source-board I2C bus, device, probe, byte, and register words.

10

UART

Auxiliary UART handles and console-routing words for boards that expose them.

11

PWM and LEDC

ESP32 LEDC words for PWM duty, frequency, fade, and servo-style pulses.