![]() ![]() As per our requirements we can just plug and play with this board as everything is built in that makes it readily available.Īrduino Mega 2560 is an amazing microcontroller board for the projects that need large amount of input output pins or if high processing power is required. We don’t need to attach extra components or devices to make this board in running condition to use. It is programmed in Arduino IDE software like all other boards in terms of coding. Instead it uses ATmega16U2 programmed as a USB-to-serial converter. Arduino MEGA 2560 is different from all other boards of Arduino that came before as they don’t use the FTDI USB-to-serial driver chip. It can have more memory space as compared to other boards of Arduino. This board is the successor of Arduino MEGA. It is way more powerful than Arduino UNO and also twice as long from it. INTRODUCTION TO Arduino mega 2560Īrduino MEGA 2560 board is just like a brother of Arduino UNO board. We will also highlight some application and projects that are made from this board and much more. You will also get to know about the specifications of this board, pins configuration, components, software that is used to program this board, memory, power requirements and additional shields that can be used with board. After reading this article you will get to know that how this board is different from other boards of Arduino, in which condition or under which specifications we should use this board and why we should prefer this board over others. *out |= bit // set the bit e.g.In this article we are going to discuss briefly about Arduino Mega 2560 board. SREG = oldSREG // restore state register (enable interrupts) ![]() Set the Arduino pin 13 as output (equivalent to pinMode(13,OUTPUT)) DDRB |= 1 0101 You don't need to care about MCUCR, unless you want to disable pull-up on all pins. Port B and bit 7.īit 7 in DDR B controls the direction (input/output)īit 7 in PORT B controls the output (high/low) You can find which Arduino pin is connected to which ATMega pin in schematic.Įxample: Controlling Arduino pin 13 find the port and bit for Arduino pin 13īy looking at the pinout map above, you will find "PB7" next to pin 13.Īrduino pin 13 is connected to ATMega2560 pin P B7 on the Arduino circuit board. The pinout map above is derived from the schematic. Look at the schematic for Arduino Mega and the ATMega2560 Datasheet The tan box in the pinout map below shows the pin name assigned by Atmel (who makes the chip). To toggle a given Arduino pin, you will need the x (port) and n (bit) to locate the registers and bits. “x” represents the numbering letter for the port, and “n” represents the bit number.įinding the registers for a given Arduino pin PUD in MCUCR disables all pull-up resistors if it is set to 1. PORTxn bit in PORTx register controls the output (high/low digitalWrite()) Three bits in three registers control the state of a GPIO pin:ĭDxn bit in DDRx register controls the direction (input/output pinMode()) The I/O section from the ATMega2560 datasheet (linked below) explains how to configure and toggle a GPIO (General Purpose Input/Output) pin. 4 pinMode() and digitalWrite() under the hood.3.3 set the Arduino pin 13 as input (equivalent to pinMode(13,INPUT)).3.2 set the Arduino pin 13 as output (equivalent to pinMode(13,OUTPUT)).3.1 find the port and bit for Arduino pin 13.2 Finding the registers for a given Arduino pin. ![]()
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