[Arduino]WiFi Shield & Motor Driver 제어

Step 1 : H/W

• TA8050P ( Motor Driver )
• Features
• Bidrectional DC motor driver
• Current capacity : 1.5A
• Four modes : Forward, Reverse, Stop, and Brake
• Block Diagram and Pin Layout

• Pin Description
  

• H/W Layout

• WizFi250-EVB(Wi-Fi Shield)
  

• Feature
  

• Arduino Pin Compatible
  

• Single band 2.4GHz IEEE 802.11b/g/n

• Intergrated RF power amplifier

• Supports wiress data rates up to 65Mbit/s

• 1MB Flash Memory, 128KB SRAM, 1MB Serial Flash

• Serial Interface : UART, SPI

• EVB-Interface

• 
  

• EVB-Schematic

• http://wizwiki.net/wiki/doku.php?id=products:wizfi250:wizfi250evbsch:start

Step 2: WizFi250 Arduino Library Download

• 아래 주소에서 WizFi250 Library를 다운로드 한 후, RC car 예제를 이용하면 된다.

• https://github.com/Wiznet/Arduino_WizFi250

• Source Code

#include <Arduino.h>

#include <SPI.h>

#include <IPAddress.h>

#include "WizFi250.h"

#include "WizFi250_udp.h"

#define SSID "kaizen_home1"

#define KEY "qwertyuiop"

#define AUTH ""

//#define DEBUG

#define LEFT_1 5

#define LEFT_2 6

#define RIGHT_1 7

#define RIGHT_2 8

#define REMOTE_PORT 5000

#define LOCAL_PORT 5000

IPAddress ip (192,168,15,1);

IPAddress gateway (192,168,15,1);

IPAddress mask (255,255,255,0);

IPAddress timeServer (0,0,0,0);

WizFi250 wizfi250;

WizFi250_UDP Udp(timeServer,LOCAL_PORT,REMOTE_PORT);

boolean Wifi_setup = false;

void setup()

{

Serial.begin(9600);

Serial.println("\r\nSerial Init");

wizfi250.begin();

wizfi250.setDebugPrint(4);

wizfi250.hw_reset();

        RCpinSetup();

wizfi250.sync();

wizfi250.setDhcp();

for(int i=0; i<10; i++)

{

if( wizfi250.join(SSID,KEY,AUTH) == RET_OK )

{

Wifi_setup = true;

break;

}

}

}

void loop()

{

uint8_t cmd;

if( Wifi_setup )

{

wizfi250.RcvPacket();

if( Udp.available() )

{

cmd = Udp.recv();

if( cmd == (uint8_t)'1') // Forward

{

                            Serial.println("Forward");

                            moveForward();

}

else if( cmd == (uint8_t) '2') // Backward

{

                            Serial.println("Backward");

                            moveBackward();

}

else if( cmd == (uint8_t) '3') // Turn Right

{

                            Serial.println("Turn Right");

                            turnRight();

}

else if( cmd == (uint8_t) '4')

{

                            Serial.println("Turn Left");

                            turnLeft();

}

                        cmd = NULL;

}

else

{

Udp.begin();

}

}

}

void RCpinSetup()

{

pinMode(LEFT_1, OUTPUT);

pinMode(LEFT_2, OUTPUT);

pinMode(RIGHT_1, OUTPUT);

pinMode(RIGHT_2, OUTPUT);

}

void moveForward()

{

digitalWrite(LEFT_2, LOW);

digitalWrite(RIGHT_2, LOW);

delay(200);

digitalWrite(LEFT_2, HIGH);

digitalWrite(RIGHT_2,HIGH);

}

void moveBackward()

{

digitalWrite(LEFT_1, LOW);

digitalWrite(RIGHT_1, LOW);

delay(200);

digitalWrite(LEFT_1, HIGH);

digitalWrite(RIGHT_1,HIGH);

}

void turnRight()

{

        digitalWrite(LEFT_1, LOW);

        digitalWrite(RIGHT_2, LOW);

        delay(200);

        digitalWrite(LEFT_1, HIGH);

        digitalWrite(RIGHT_2,HIGH);

}

void turnLeft()

{

        digitalWrite(LEFT_2, LOW);

        digitalWrite(RIGHT_1, LOW);

        delay(200);

        digitalWrite(LEFT_2, HIGH);

        digitalWrite(RIGHT_1,HIGH);

}

Step 3: Demo Video

참고

• [TA8050P 그림], http://mclab.silla.ac.kr/lecture/201201/es/es-arduino-lecture-09.pdf
• [TA8050P DataSheet], http://pdf1.alldatasheet.com/datasheet-pdf/view/31394/TOSHIBA/TA8050P.html
• [WizFi250], http://wizwiki.net/wiki/doku.php?id=products:wizfi250:start