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0.1.0 ADG2128_RT
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‎libraries/ADG2128_RT/.arduino-ci.yml

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platforms:
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rpipico:
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board: rp2040:rp2040:rpipico
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package: rp2040:rp2040
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gcc:
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features:
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defines:
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- ARDUINO_ARCH_RP2040
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warnings:
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flags:
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packages:
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rp2040:rp2040:
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url: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
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compile:
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# Choosing to run compilation tests on 2 different Arduino platforms
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platforms:
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- uno
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# - due
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# - zero
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# - leonardo
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- m4
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- esp32
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- esp8266
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# - mega2560
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- rpipico
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libraries:
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- "printHelpers"

‎libraries/ADG2128_RT/.github/FUNDING.yml

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# These are supported funding model platforms
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github: RobTillaart
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custom: "https://www.paypal.me/robtillaart"

‎libraries/ADG2128_RT/.github/workflows/arduino-lint.yml

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name: Arduino-lint
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on: [push, pull_request]
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jobs:
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lint:
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runs-on: ubuntu-latest
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timeout-minutes: 5
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steps:
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- uses: actions/checkout@v4
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- uses: arduino/arduino-lint-action@v1
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with:
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library-manager: update
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compliance: strict

‎libraries/ADG2128_RT/.github/workflows/arduino_test_runner.yml

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name: Arduino CI
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on: [push, pull_request]
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jobs:
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runTest:
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runs-on: ubuntu-latest
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timeout-minutes: 20
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steps:
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- uses: actions/checkout@v4
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- uses: ruby/setup-ruby@v1
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with:
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ruby-version: 2.6
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- run: |
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gem install arduino_ci
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arduino_ci.rb

‎libraries/ADG2128_RT/.github/workflows/jsoncheck.yml

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name: JSON check
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on:
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push:
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paths:
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- '**.json'
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pull_request:
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jobs:
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test:
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runs-on: ubuntu-latest
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timeout-minutes: 5
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steps:
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- uses: actions/checkout@v4
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- name: json-syntax-check
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uses: limitusus/json-syntax-check@v2
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with:
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pattern: "\\.json$"

‎libraries/ADG2128_RT/ADG2128.cpp

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//
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// FILE: ADG2128.cpp
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// AUTHOR: Rob Tillaart
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// DATE: 2025-02-28
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// VERSION: 0.1.0
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// PURPOSE: Arduino library for ADG2128 8x8 (cross-point) matrix switch with I2C.
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// URL: https://github.com/RobTillaart/ADG2128
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#include "ADG2128.h"
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#define ADG2128_LATCHED_MODE 0x00
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#define ADG2128_DIRECT_MODE 0x01
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ADG2128::ADG2128(uint8_t address, TwoWire *wire)
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{
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_address = address;
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_wire = wire;
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_error = 0;
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_mode = ADG2128_DIRECT_MODE;
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_reset = 255;
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}
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bool ADG2128::begin()
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{
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// reset variables
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_error = 0;
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if ((_address < 0x70) || (_address > 0x77))
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{
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_error = -1;
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return false;
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}
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if (! isConnected())
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{
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return false;
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}
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return true;
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}
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bool ADG2128::isConnected()
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{
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_wire->beginTransmission(_address);
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return (_wire->endTransmission() == 0);
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}
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uint8_t ADG2128::getAddress()
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{
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return _address;
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}
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/////////////////////////////////////////////
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//
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// SWITCHES
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//
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void ADG2128::on(uint8_t row, uint8_t col)
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{
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if ((row > 7 ) || (col > 11)) return;
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uint8_t pins = 0x80; // 0x80 == ON
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if (col < 6) pins |= (col << 3) + row;
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else pins |= ((col + 2) << 3) + row;
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_send(pins, _mode);
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}
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void ADG2128::off(uint8_t row, uint8_t col)
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{
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if ((row > 7 ) || (col > 11)) return;
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uint8_t pins = 0x00; // 0x00 == OFF
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if (col < 6) pins |= (col << 3) + row;
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else pins |= ((col + 2) << 3) + row;
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_send(pins, _mode);
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}
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bool ADG2128::isOn(uint8_t row, uint8_t col)
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{
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if ((row > 7 ) || (col > 11)) return false;
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uint8_t value = isOn(col);
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return (value & (1 << row)) > 0;
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}
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uint8_t ADG2128::isOnMask(uint8_t col)
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{
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if (col > 11) return false;
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// Table 8 datasheet
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uint8_t mask = 0x34; // == 0b00110100;
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if (col & 0x08) mask |= 0x02;
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if (col & 0x04) mask |= 0x01;
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if (col & 0x02) mask |= 0x40;
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if (col & 0x01) mask |= 0x08;
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return _readback(mask);
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}
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/////////////////////////////////////////////
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//
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// MODE
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//
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// default direct (transparent) mode
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void ADG2128::setMode(bool latched)
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{
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_mode = latched ? ADG2128_LATCHED_MODE : ADG2128_DIRECT_MODE;
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}
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bool ADG2128::isLatchedMode()
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{
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return _mode == ADG2128_LATCHED_MODE;
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}
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bool ADG2128::isDirectMode()
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{
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return _mode == ADG2128_DIRECT_MODE;
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}
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/////////////////////////////////////////////
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//
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// RESET
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//
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void ADG2128::setResetPin(uint8_t resetPin)
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{
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_reset = resetPin;
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pinMode(_reset, OUTPUT);
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digitalWrite(_reset, HIGH);
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}
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void ADG2128::pulseResetPin()
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{
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digitalWrite(_reset, LOW);
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// need delay(1);
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digitalWrite(_reset, HIGH);
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}
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/////////////////////////////////////////////
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//
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// DEBUG
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//
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int ADG2128::getLastError()
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{
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int e = _error;
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_error = 0;
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return e;
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}
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///////////////////////////////////////////////
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//
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// PRIVATE
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//
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int ADG2128::_send(uint8_t pins, uint8_t value)
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{
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_wire->beginTransmission(_address);
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_wire->write(pins);
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_wire->write(value);
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_error = _wire->endTransmission();
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return _error;
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}
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int ADG2128::_readback(uint8_t value)
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{
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_wire->beginTransmission(_address);
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_wire->write(value);
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_error = _wire->endTransmission();
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uint8_t bytes = _wire->requestFrom(_address, (uint8_t)2);
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if (bytes != 2)
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{
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_error = -1;
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return 0;
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}
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_wire->read(); // skip dummy data
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return _wire->read();
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}
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// -- END OF FILE --
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‎libraries/ADG2128_RT/ADG2128.h

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#pragma once
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//
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// FILE: ADG2128.h
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// AUTHOR: Rob Tillaart
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// DATE: 2025-02-28
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// VERSION: 0.1.0
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// PURPOSE: Arduino library for ADG2128 8x12 (cross-point) matrix switch with I2C.
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// URL: https://github.com/RobTillaart/ADG2128
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//
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#include "Arduino.h"
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#include "Wire.h"
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#define ADG2128_LIB_VERSION (F("0.1.0"))
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#define ADG2128_DEFAULT_ADDRESS 0x70
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// ERROR CODES
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// values <> 0 are errors.
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#define ADG2128_OK 0x00
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#define ADG2128_CRC_ERROR 0x01
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#define ADG2128_NOT_READY 0x10
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#define ADG2128_REQUEST_ERROR 0x11
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class ADG2128
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{
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public:
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ADG2128(uint8_t address = ADG2128_DEFAULT_ADDRESS, TwoWire *wire = &Wire);
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bool begin();
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bool isConnected();
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uint8_t getAddress();
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// SWITCH
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void on(uint8_t row, uint8_t col);
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void off(uint8_t row, uint8_t col);
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bool isOn(uint8_t row, uint8_t col);
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uint8_t isOnMask(uint8_t col); // get a whole column at once as bit mask.
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// WRAPPERS.
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void on(uint8_t sw) { on(sw / 12, sw % 12); };
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void off(uint8_t sw) { off(sw / 12, sw % 12); };
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uint8_t isOn(uint8_t sw) { return isOn(sw / 12, sw % 12); };
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// MODE
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// default direct (transparent) mode
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void setMode(bool latched = false);
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bool isLatchedMode();
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bool isDirectMode();
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// RESET
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void setResetPin(uint8_t resetPin);
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// reset ==> all switches off, registers ==> 0.
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void pulseResetPin();
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// DEBUG
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int getLastError();
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private:
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uint8_t _address = 0x2A;
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TwoWire* _wire;
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int _send(uint8_t pins, uint8_t value);
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int _readback(uint8_t value);
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int _error;
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uint8_t _mode;
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uint8_t _reset;
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};
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// -- END OF FILE --
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‎libraries/ADG2128_RT/CHANGELOG.md

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# Change Log ADG2128
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](http://keepachangelog.com/)
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and this project adheres to [Semantic Versioning](http://semver.org/).
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## [0.1.0] - 2025-02-28
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- initial version
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‎libraries/ADG2128_RT/LICENSE

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MIT License
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Copyright (c) 2025-2025 Rob Tillaart
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

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