Port registers arduino mega - Mega internal registers map - DIY Drones
Benchmarking Arduinos one option would be to use the registers of the AVR chip When you switch to using direct port manipulation of an Arduino.
Arduino Mega 2560 Datasheet. Overview but OSX and Linux machines will recognize the board as a COM port automatically. The Arduino software includes a serial.
But how much? This article is not to teach you how to useIO registers, you can read about it on the Arduino Port Manipulation page.
modbusarduino A library that allows your Arduino to communicate via Modbus protocol, acting as a slave (master in development). Supports serial (RS232, RS485.
PORTD maps to Arduino digital pins 0 to 7. DDRD The Port D Data write a bunch of hardware pins simultaneously via the port registers than it would using a for.
Arduino Modbus RTU ADC. it is capable of sampling 5 analog values and storing them storing them in 5 sequential registers. consider using an Arduino Mega.