Each port is controlled by three registers, which are also defined variables in the arduino language. There are three port registers that we can alter to set the status of the digital and analogue I/O pins.

Comme pour beaucoup de monde, lorsque je souhaitais transférer mon programme dans le Arduino, un message PORT COM non branché apparaissait. The PORT register controls whether the pin is HIGH or LOW, and the PIN register reads the state of INPUT pins set to input with pinMode(). du coup mon arduino apparait bien dans l'onglet port COM mais il y a un warning sur l'iconne et il n'apparait pas dans le logiciel arduino j'ai a peu pres tout essayé - changer de port usb - changer d'ordinateur - changer de systeme d'exploitation - reinstaller les drivers encore et encore

A port register can be thought of as a special byte variable that we can change which is read by the microcontroller, therefore controlling the state of various I/O ports. We have three port registers to … Problème port com Arduino Voila un petit retour sur expérience d'un problème de transfert d'application sur un Arduino UNO avec un PC Windows 8. the answer may lie on the FTDI chip which was replaced by CH340G USB interface chip. if you are someone who have a cheaper arduino nano, (welcome aboard!) Arduino Nano Com Port Config : having trouble detecting the port when programming the arduino nano? The DDR register, determines whether the pin is an INPUT or OUTPUT.