Архив за день: 2021-03-16

Самодельный «драйвер» для графического планшета GAOMON M106K для Linux на Python

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Для графического планшета GAOMON M106K пару лет назад драйвера для Linux не было. Скорее всего, до сих пор нет. Поэтому пару лет назад написал для себя скрипт на Python, с помощью которого планшет у меня заработал в Ubuntu и Raspbian.

Сначала про подготовку к запуску скрипта. Нужно будет кое-что установить (под root`ом):

# apt-get install python3-pip && \
pip3 install --upgrade pip && \
pip3 install setuptools && \
pip3 install Xlib && \
pip3 install pyautogui

Библиотека pyautogui по умолчанию работает не очень (перемещение курсора дёрганое), поэтому нужно поправить в ней один файл (версия питона может отличаться):

# cp __init__.py /usr/local/lib/python3.4/dist-packages/pyautogui/__init__.py

После этого нужно проверить в скрипте planshet.py имя файла устройства (у меня он подключался под именем /dev/hidraw2) и запустить его под root`ом (иначе не будет прав на чтение из файла устройства).

Сам «драйвер» planshet.py:

#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
"driver" for GAOMON M106K by Maxim Kuznetsov http://kmsvsr.ru
To install needed packages and modules run "install.sh" as superuser
Don`t forget to replace or edit /usr/local/lib/python.../dist-packages/pyautogui/__init__.py
before use
"sudo ./planshet.py" to run. Sudo is for access to read from device /dev/hidraw0
Works in Linux Mint 18
"""

import time
import struct
# https://pyautogui.readthedocs.io/en/latest/mouse.html#the-mousedown-and-mouseup-functions
import pyautogui


MONITOR_HEIGHT = 1050
MONITOR_WIDTH = 1400


def start_driver():
    """Open device and start to process input actions"""
    # init
    with open("/dev/hidraw2", "rb") as device_file:
        lm_pressed = False
        rm_pressed = False
        mm_pressed = False
        last_move_time = int(round(time.time() * 1000))

        # endless cycle of reading data from device
        while True:
            data = device_file.read(8) # 8 is for my GAOMON M106K
            values = struct.unpack('HHHH',data)
            print(
                f"Buttons: {hex(values[0])}; "
                f"X: {hex(values[1])}; "
                f"Y: {hex(values[2])}; "
                f"Press: {hex(values[3])}"
            )
            # https://stackoverflow.com/questions/1181464/controlling-mouse-with-python
            current_time = int(round(time.time() * 1000))
            deadline_time = last_move_time + 15
            if deadline_time < current_time:
                x_pos = values[1] * MONITOR_WIDTH / 0x7fff
                y_pos = values[2] * MONITOR_HEIGHT / 0x7fff
                buttons = values[0]
                press = values[3]
                pyautogui.moveTo(x_pos, y_pos)
                last_move_time = current_time
                # Left mouse button is touch by pen
                if press > 0:
                    if not lm_pressed:
                        pyautogui.mouseDown(button='left')
                        lm_pressed = True
                else:
                    if lm_pressed:
                        pyautogui.mouseUp(button='left')
                        lm_pressed = False

                # Right mouse button is touch by pen with bottom button on it
                if buttons == 0xc20a:
                    if not rm_pressed:
                        pyautogui.mouseDown(button='right')
                        rm_pressed = True
                else:
                    if rm_pressed:
                        pyautogui.mouseUp(button='right')
                        rm_pressed = False

                # Middle mouse button is touch by pen with top button on it
                if buttons == 0xc40a:
                    if not mm_pressed:
                        pyautogui.mouseDown(button='middle')
                        mm_pressed = True
                else:
                    if mm_pressed:
                        pyautogui.mouseUp(button='middle')
                        mm_pressed = False


if __name__ == "__main__":
    start_driver()

Весь «драйвер» получился чуть больше 50 строчек кода. Может быть кому-нибудь пригодится подключить так же другую модель планшета или ещё какое-нибудь необычное устройство ввода, для которого нет нормального драйвера под Linux.

Из недоделок: не работают кнопки на планшете, либо они подключаются другим устройством, либо через /dev вообще не доступны, лишку не разбирался.

Arduino — прошивка для гирлянды

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/**************************************/
const int lowestPin = 2;//the lowest one attach to
const int highestPin = 11;//the highest one attach to 

const int redPin = 11;
const int yellowPin = 9;
const int greenPin = 7;

/**************************************/
void setup()
{
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
     pinMode(thisPin,OUTPUT); //initialize thisPin as an output
  }
} 
/****************************************/
void loop()
{
  
  //iterate over the pins
  //turn the led on from lowest to the highest
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
    digitalWrite(thisPin,HIGH);//turn this led on
    delay(100);//wait for 100 microseconds
  }
  //fade from the highest to the lowest
  for(int thisPin = highestPin;thisPin>=lowestPin;thisPin--)
  {
    digitalWrite(thisPin,LOW);//turn this led off
    delay(100);//wait for 100 microseconds
  }
  for(int thisPin = highestPin;thisPin>=lowestPin;thisPin--)
  {
    digitalWrite(thisPin,HIGH);//turn this led off
    delay(100);//wait for 100 microseconds
  }
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
    digitalWrite(thisPin,LOW);//turn this led on
    delay(100);//wait for 100 microseconds
  }
  
}

Arduino — прошивка для светофора, ночника, и вообще со светодиодами поиграться

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//Flowing LED Lights
/* Eight LEDs will light up one by one from left to right, and then go out one by one from right to left.
After that, the LEDs will light up one by one from right to left, and then go out one by one from left to right.
This process will repeat indefinitely.*/
//www.RobotLinking.com
//2015.5.7
/**************************************/
const int lowestPin = 2;//the lowest one attach to
const int highestPin = 11;//the highest one attach to 


const int redPin = 11;
const int yellowPin = 9;
const int greenPin = 7;

int  lastPin = 2;
int lastlastPin = 2;

/**************************************/
void setup()
{
  //set pins 1 through 6 as output  
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
     pinMode(thisPin,OUTPUT); //initialize thisPin as an output
  }
} 
/****************************************/
void loop()
{
  /*
  //iterate over the pins
  //turn the led on from lowest to the highest
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
    digitalWrite(thisPin,HIGH);//turn this led on
    delay(100);//wait for 100 microseconds
  }
  //fade from the highest to the lowest
  for(int thisPin = highestPin;thisPin>=lowestPin;thisPin--)
  {
    digitalWrite(thisPin,LOW);//turn this led off
    delay(100);//wait for 100 microseconds
  }
  for(int thisPin = highestPin;thisPin>=lowestPin;thisPin--)
  {
    digitalWrite(thisPin,HIGH);//turn this led off
    delay(100);//wait for 100 microseconds
  }
  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
    digitalWrite(thisPin,LOW);//turn this led on
    delay(100);//wait for 100 microseconds
  }
  */
  
  /*
  //svetofor
  //red
  digitalWrite(yellowPin, LOW);
  digitalWrite(redPin, HIGH);
  delay(5000);
  //yellow red
  digitalWrite(yellowPin, HIGH);
  delay(2000);
  //green
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, HIGH);
  delay(5000);
  //yellow
  digitalWrite(greenPin, LOW);
  digitalWrite(yellowPin, HIGH);
  delay(2000);
*/

  for(int thisPin = lowestPin;thisPin <= highestPin;thisPin++)
  {
    digitalWrite(thisPin,HIGH);
    digitalWrite(lastlastPin,LOW);
    lastlastPin = lastPin;
    lastPin = thisPin;
    delay(5000);//wait for 100 microseconds
  }

}

Arduino — прошивка для дверного звонка

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Сделал звонок больше 2 лет назад, до сих пор работает без проблем. Исходник:

/*************************************************
 * Public Constants
 *************************************************/

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978


 
// notes in the melody:
int melody[] = {
  NOTE_C5, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_G5, NOTE_A5, NOTE_B5, NOTE_C6};
int duration = 500;  // 500 miliseconds
 
const int voicePin = 12;     // passive buzzer
const int buttonPin = 2;     // the number of the pushbutton pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

 
void setup() {
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);
}
 
void loop() {  
  
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);
  
  if(buttonState == HIGH){
    //shut your mouth
    tone(voicePin, NOTE_D5, 400); delay(400);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_G5, 200); delay(200);
    tone(voicePin, NOTE_AS5, 400); delay(400);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_G5, 200);  delay(200);
    tone(voicePin, NOTE_A5, 400); delay(400);
    tone(voicePin, NOTE_G5, 200); delay(200);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_AS5, 200); delay(200);
    tone(voicePin, NOTE_AS5, 200); delay(200);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_G5, 400); delay(200);
    //tone(voicePin, NOTE_D5, 400); delay(400);
    
    tone(voicePin, NOTE_D5, 400); delay(400);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_G5, 200); delay(200);
    tone(voicePin, NOTE_AS5, 400); delay(400);
    tone(voicePin, NOTE_A5, 200); delay(200);
    tone(voicePin, NOTE_G5, 200); delay(200);
    tone(voicePin, NOTE_F5, 400); delay(400);
    tone(voicePin, NOTE_G5, 200); delay(200);
    tone(voicePin, NOTE_F5, 200); delay(200);
    tone(voicePin, NOTE_E5, 200); delay(200);
    tone(voicePin, NOTE_E5, 200); delay(200);
    tone(voicePin, NOTE_F5, 200); delay(200);
    tone(voicePin, NOTE_E5, 200); delay(200);
    tone(voicePin, NOTE_D5, 400); delay(400);
    
     
    // restart after two seconds 
    delay(2000);
  }
  
  delay(300);
}