pico_tinygo_buttons

Raspberry Pi Pico TinyGo Buttons

Overview

This project is a library for handling multiple buttons on Raspberry Pi Pico by TinyGo.

• confirmed with TinyGo 0.27.0

This project features to detect:

• Single Push event
• Repeated Single Push event
• Multiple Push event (exclusive with Repeated Single)
• Long (Long) Push event (exclusive with Repeated Single)

Supported Board and Device

• Raspberry Pi Pico
• 5 Way Switch + 2 Buttons

Pin Assignment & Connection

5 Way Switch + 2 Buttons

How to build

• Build is confirmed only in TinyGo Docker environment with Windows WSL2 integration
• Before starting docker, clone repository to your local enviroment (by GitBash etc.)

> cd /d/somewhere/share
> git clone -b main https://github.com/elehobica/pico_tinygo_buttons.git

• Docker

> wsl
(in WSL2 shell)
$ docker pull tinygo/tinygo:0.27.0
$ docker images
$ docker run -it -v /mnt/d/somewhere/share:/share tinygo/tinygo:0.27.0 /bin/bash
(in docker container)
# cd /share

(copy repository for docker native directory for best performance of WSL2, otherwise stay /share)
(# cp -r /share/pico_tinygo_buttons ~/ && cd ~ )

# cd pico_tinygo_buttons

• Go Module Configuration

# go mod init github.com/elehobica/pico_tinygo_buttons
# go mod tidy

• TinyGo Build

# tinygo build -target=pico --serial uart -o pico_tinygo_buttons.uf2

(copy UF2 back to Windows local if working on docker native directory)
(# cp pico_tinygo_buttons.uf2 /share/pico_tinygo_buttons/ )

• Put UF2

Then, go back to Windows environment and put "pico_tinygo_buttons.uf2" on RPI-RP2 drive

Usage Guide

Button Function Assignment

• Multiple / Long / LongLong detection for Center button
• Single / Repeated Single detection for Left/Right/Up/Down buttons
• Single detection for Set/Reset buttons

Note

• If Multiple detection enabled, time lag defined by 'actFinishCnt' is needed to determine action
• Repeat count information of Repeated Single detection is served for UI items to accelerate something by continuous button push
• Use NewButtonConfig() for customizing button detection parameters other than default configurations
• Trriple clicks of Center button shows processing time of button scan function (in this example project)

Log Example

=========================
== pico_tinygo_buttons ==
=========================
center: 1
left: 1
right: 1
up: 1
up: 1
right: 1
down: 1
down: 1 (Repeated 1)
down: 1 (Repeated 2)
center: 2
set: 1
reset: 1
center: Long
center: LongLong
center: 3
time 41us (scan: 650)