ป้ายไฟวิ่งดอทเมตริกซ์

// Use the Parola library to scroll text on the display

//

// Demonstrates the use of the scrolling function to display text received

// from the serial interface

//

// User can enter text on the serial monitor and this will display as a

// scrolling message on the display.

// Speed for the display is controlled by a pot on SPEED_IN analog in.

// Scrolling direction is controlled by a switch on DIRECTION_SET digital in.

// Invert ON/OFF is set by a switch on INVERT_SET digital in.

//

// UISwitch library can be found at https://github.com/MajicDesigns/MD_UISwitch

// MD_MAX72XX library can be found at https://github.com/MajicDesigns/MD_MAX72XX

//

#include <MD_Parola.h>

#include <MD_MAX72xx.h>

#include <SPI.h>

// set to 1 if we are implementing the user interface pot, switch, etc

#define USE_UI_CONTROL 0

#if USE_UI_CONTROL

#include <MD_UISwitch.h>

#endif

// Turn on debug statements to the serial output

#define DEBUG 0

#if DEBUG

#define PRINT(s, x) { Serial.print(F(s)); Serial.print(x); }

#define PRINTS(x) Serial.print(F(x))

#define PRINTX(x) Serial.println(x, HEX)

#else

#define PRINT(s, x)

#define PRINTS(x)

#define PRINTX(x)

#endif

// Define the number of devices we have in the chain and the hardware interface

// NOTE: These pin numbers will probably not work with your hardware and may

// need to be adapted

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW

#define MAX_DEVICES 4

#define CLK_PIN   13

#define DATA_PIN  11                                                                                                                                                                                            

#define CS_PIN    10

// HARDWARE SPI

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

// SOFTWARE SPI

//MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// Scrolling parameters

#if USE_UI_CONTROL

const uint8_t SPEED_IN = A5;

const uint8_t DIRECTION_SET = 8;  // change the effect

const uint8_t INVERT_SET = 9;     // change the invert

const uint8_t SPEED_DEADBAND = 5;

#endif // USE_UI_CONTROL

uint8_t scrollSpeed = 25;    // default frame delay value

textEffect_t scrollEffect = PA_SCROLL_LEFT;

textPosition_t scrollAlign = PA_LEFT;

uint16_t scrollPause = 2000; // in milliseconds

// Global message buffers shared by Serial and Scrolling functions

#define BUF_SIZE 75

char curMessage[BUF_SIZE] = { "" };

char newMessage[BUF_SIZE] = { "Sisaket Polytechtical College" };

bool newMessageAvailable = true;

#if USE_UI_CONTROL

MD_UISwitch_Digital uiDirection(DIRECTION_SET);

MD_UISwitch_Digital uiInvert(INVERT_SET);

void doUI(void)

{

  // set the speed if it has changed

  {

    int16_t speed = map(analogRead(SPEED_IN), 0, 1023, 10, 150);

    if ((speed >= ((int16_t)P.getSpeed() + SPEED_DEADBAND)) ||

      (speed <= ((int16_t)P.getSpeed() - SPEED_DEADBAND)))

    {

      P.setSpeed(speed);

      scrollSpeed = speed;

      PRINT("\nChanged speed to ", P.getSpeed());

    }

  }

  if (uiDirection.read() == MD_UISwitch::KEY_PRESS) // SCROLL DIRECTION

  {

    PRINTS("\nChanging scroll direction");

    scrollEffect = (scrollEffect == PA_SCROLL_LEFT ? PA_SCROLL_RIGHT : PA_SCROLL_LEFT);

    P.setTextEffect(scrollEffect, scrollEffect);

    P.displayClear();

    P.displayReset();

  }

  if (uiInvert.read() == MD_UISwitch::KEY_PRESS)  // INVERT MODE

  {

    PRINTS("\nChanging invert mode");

    P.setInvert(!P.getInvert());

  }

}

#endif // USE_UI_CONTROL

void readSerial(void)

{

  static char *cp = newMessage;

  while (Serial.available())

  {

    *cp = (char)Serial.read();

    if ((*cp == '\n') || (cp - newMessage >= BUF_SIZE-2)) // end of message character or full buffer

    {

      *cp = '\0'; // end the string

      // restart the index for next filling spree and flag we have a message waiting

      cp = newMessage;

      newMessageAvailable = true;

    }

    else  // move char pointer to next position

      cp++;

  }

}

void setup()

{

  Serial.begin(57600);

  Serial.print("\n[Parola Scrolling Display]\nType a message for the scrolling display\nEnd message line with a newline");

#if USE_UI_CONTROL

  uiDirection.begin();

  uiInvert.begin();

  pinMode(SPEED_IN, INPUT);

  doUI();

#endif // USE_UI_CONTROL

  P.begin();

  P.displayText(curMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);

}

void loop()

{

#if USE_UI_CONTROL

  doUI();

#endif // USE_UI_CONTROL

  if (P.displayAnimate())

  {

    if (newMessageAvailable)

    {

      strcpy(curMessage, newMessage);

      newMessageAvailable = false;

    }

    P.displayReset();

  }

  readSerial();

}

โค้ดในการปฏิบัติจริงบนชุดฝึก Ai

// Use the Parola library to scroll text on the display

//

// Demonstrates the use of the scrolling function to display text received

// from the serial interface

//

// User can enter text on the serial monitor and this will display as a

// scrolling message on the display.

// Speed for the display is controlled by a pot on SPEED_IN analog in.

// Scrolling direction is controlled by a switch on DIRECTION_SET digital in.

// Invert ON/OFF is set by a switch on INVERT_SET digital in.

//

// UISwitch library can be found at https://github.com/MajicDesigns/MD_UISwitch

// MD_MAX72XX library can be found at https://github.com/MajicDesigns/MD_MAX72XX

//

#include <MD_Parola.h>

#include <MD_MAX72xx.h>

#include <SPI.h>

// set to 1 if we are implementing the user interface pot, switch, etc

#define USE_UI_CONTROL 0

#if USE_UI_CONTROL

#include <MD_UISwitch.h>

#endif

// Turn on debug statements to the serial output

#define DEBUG 0

#if DEBUG

#define PRINT(s, x) { Serial.print(F(s)); Serial.print(x); }

#define PRINTS(x) Serial.print(F(x))

#define PRINTX(x) Serial.println(x, HEX)

#else

#define PRINT(s, x)

#define PRINTS(x)

#define PRINTX(x)

#endif

// Define the number of devices we have in the chain and the hardware interface

// NOTE: These pin numbers will probably not work with your hardware and may

// need to be adapted

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW

#define MAX_DEVICES 4

#define CLK_PIN   13

#define DATA_PIN  11                                                                                                                                                                                            

#define CS_PIN    10

// HARDWARE SPI

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

// SOFTWARE SPI

//MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// Scrolling parameters

#if USE_UI_CONTROL

const uint8_t SPEED_IN = A5;

const uint8_t DIRECTION_SET = 8;  // change the effect

const uint8_t INVERT_SET = 9;     // change the invert

const uint8_t SPEED_DEADBAND = 5;

#endif // USE_UI_CONTROL

uint8_t scrollSpeed = 25;    // default frame delay value

textEffect_t scrollEffect = PA_SCROLL_LEFT;

textPosition_t scrollAlign = PA_LEFT;

uint16_t scrollPause = 2000; // in milliseconds

// Global message buffers shared by Serial and Scrolling functions

#define BUF_SIZE 75

char curMessage[BUF_SIZE] = { "" };

char newMessage[BUF_SIZE] = { "Sisaket Polytechtical College" };

bool newMessageAvailable = true;

#if USE_UI_CONTROL

MD_UISwitch_Digital uiDirection(DIRECTION_SET);

MD_UISwitch_Digital uiInvert(INVERT_SET);

void doUI(void)

{

  // set the speed if it has changed

  {

    int16_t speed = map(analogRead(SPEED_IN), 0, 1023, 10, 150);

    if ((speed >= ((int16_t)P.getSpeed() + SPEED_DEADBAND)) ||

      (speed <= ((int16_t)P.getSpeed() - SPEED_DEADBAND)))

    {

      P.setSpeed(speed);

      scrollSpeed = speed;

      PRINT("\nChanged speed to ", P.getSpeed());

    }

  }

  if (uiDirection.read() == MD_UISwitch::KEY_PRESS) // SCROLL DIRECTION

  {

    PRINTS("\nChanging scroll direction");

    scrollEffect = (scrollEffect == PA_SCROLL_LEFT ? PA_SCROLL_RIGHT : PA_SCROLL_LEFT);

    P.setTextEffect(scrollEffect, scrollEffect);

    P.displayClear();

    P.displayReset();

  }

  if (uiInvert.read() == MD_UISwitch::KEY_PRESS)  // INVERT MODE

  {

    PRINTS("\nChanging invert mode");

    P.setInvert(!P.getInvert());

  }

}

#endif // USE_UI_CONTROL

void readSerial(void)

{

  static char *cp = newMessage;

  while (Serial.available())

  {

    *cp = (char)Serial.read();

    if ((*cp == '\n') || (cp - newMessage >= BUF_SIZE-2)) // end of message character or full buffer

    {

      *cp = '\0'; // end the string

      // restart the index for next filling spree and flag we have a message waiting

      cp = newMessage;

      newMessageAvailable = true;

    }

    else  // move char pointer to next position

      cp++;

  }

}

void setup()

{

  Serial.begin(57600);

  Serial.print("\n[Parola Scrolling Display]\nType a message for the scrolling display\nEnd message line with a newline");

#if USE_UI_CONTROL

  uiDirection.begin();

  uiInvert.begin();

  pinMode(SPEED_IN, INPUT);

  doUI();

#endif // USE_UI_CONTROL

  P.begin();

  P.displayText(curMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);

}

void loop()

{

#if USE_UI_CONTROL

  doUI();

#endif // USE_UI_CONTROL

  if (P.displayAnimate())

  {

    if (newMessageAvailable)

    {

      strcpy(curMessage, newMessage);

      newMessageAvailable = false;

    }

    P.displayReset();

  }

  readSerial();

}