What is the bootloader Arduino®?
Bootloader Arduino® is a small piece of software burned into the chip in all Arduino® boards. Its purpose is to facilitate easy and quick reprogramming. The Arduino® bootloader is open source, which means it can be freely copied, modified and redistributed and is only useful on Arduino® systems. Most desktops use the bootloader to load the computer's operating system into memory or to start the operating system along the way of loading itself. The bootloader is also used on the machines configured to start multiple operating systems and asks the user to choose which operating system to use. Despite their relative simplicity, the Arduino® devices are basically very small computers of general purpose and require bootloader when you turn on.
The default bootloader Arduino® passes through the sequence to determine what software to load into short -term memory. If Radaje connected to a computer with a USB cable, Xbee® radio or serial connection with bootloader attempts to download new software from Ptubs. Arduino® programs are also referred to as Arduino® sketches. Once the sketch is withdrawn, it will be written in the long -term memory and then loaded back into the short -term memory to start. If the board is not connected to the computer or if it is unable to download new software, the last written program from the long -term memory loads.
Bootloader Arduino® is particularly useful because it eliminates the need for an external programming device that is usually necessary to change software on similar devices. Arduino® inventions usually operate their software directly from chips without the benefit of magnetic storage devices. This approach is faster and cheaper than the use of magnetic storage. The main disadvantage of shoeloader is that it uses part of the limited space on chips and minimizes space available for software.
Some users have been frustrated by a limitation of the Arduino® bootloader and resorted to the after afterUse of an external programming device to remove bootloader and manually adding new programs. Although this technique increases the available space and somewhat increases the speed of software, it is relatively time consuming and is not recommended for most users. Other users have written alternative Arduino® bootloaders, some of which are open resources and are available for free online.