Imported from GitHub: aserebryakov/arduino-fun · commit b37e82b · license MIT

Description

This is the repo for arduino sketches.

README

Volume Control with PC Busy

Idea

To build a device that will contain following functionalities:

• Volume control (volume up, volume down, mute)
• Mouse move emulator
• Keyboard input emulator

User Interface

• 5-pin rotary encoder to control volume
• button to turn on/off mouse move emulation (with status LED)
• button to turn on/off keyboard input emulation (with status LED)

Software Design

---
title: Rotary Encoder
---
classDiagram
    class PIN_CHANGE {
        <<enumeration>>
        LOW_HIGH,
        HIGH_LOW,
        NO_CHANGE
    }

    class RotaryEncoderPin {
        <<interface>>
        + readPinChange() PIN_CHANGE
        + readPinStatus() bool
    }

    class RotaryEncoderPinImpl {
        + ctor(number, pin_mode)
    }

    class RotaryEncoderPinMock

    class RotaryEncoder {
        + ctor(dt_pin, clk_pin, sw_pin)
        + setTurnClockwiseHandler()
        + setTurnCounterClockwiseHandler()
        + setPushButtonHandler()
        + readStatus()
        - onClockwise
        - onCounterClockwise
        - onPushButton
        - dt_pin : RotaryEncoderPin
        - clk_pin : RotaryEncoderPin
        - sw_pin : RotaryEncoderPin
    }

    PIN_CHANGE --> RotaryEncoderPin

    RotaryEncoderPin <|-- RotaryEncoderPinImpl
    RotaryEncoderPin <|-- RotaryEncoderPinMock

    RotaryEncoder *-- RotaryEncoderPin

Mouse Emulator Scheduling Example

sequenceDiagram
    participant Scheduler
    participant Controller
    participant RotaryEncoder
    participant MouseEmulator

    loop
        Controller ->> RotaryEncoder : readStatus()
        activate RotaryEncoder
        note over RotaryEncoder : call handlers
        RotaryEncoder -->> Controller : 
        deactivate RotaryEncoder

        Controller ->> MouseEmulator : readStatus()
        activate MouseEmulator

        alt START
            MouseEmulator -->> Controller : 
            Controller ->> Scheduler : addTask(mouse_callback)
            Scheduler -->> Controller : 
        else STOP
            MouseEmulator -->> Controller : 
            deactivate MouseEmulator
            Controller ->> Scheduler : removeTask(mouse_callback)
            Scheduler -->> Controller : 
        end
        
        Controller ->> Scheduler : tick(10ms)
        Scheduler -->> Controller : 
        
        note over Controller : delay(10ms)
    end

Scheduler

sequenceDiagram
    participant Controller
    participant Scheduler

    Controller ->> Scheduler : addPeriodicTask(callback, period)

    Scheduler -->> Controller : task id
    note over Scheduler : store callback
    note over Scheduler : store period as time to next call

    Controller ->> Scheduler : tick(interval)
    note over Scheduler : substract value from task

    alt expired
        note over Scheduler : call callback and reset period
    else
        note over Scheduler : do nothing
    end

    Scheduler -->> Controller :