ARM embedded development board, embedded development board design, software and hardware design

ARM embedded development board, embedded development board design, software and hardware design

1. Characteristics of RF control board:

1. The working frequency is 13.56MHz, and the wavelength of this frequency is about 22m;

2. Except for metal materials, the wavelength of this frequency can pass through most materials, but it often reduces the reading distance. The sensor needs to be a distance away from the metal;

3. This frequency band is recognized in all countries and has no restrictions;

4. Sensors are generally in the form of electronic labels;

5. Although the magnetic field area of this frequency decreases rapidly, it can produce a relatively uniform read-write area;

6. The system has anti-collision characteristics and can read multiple electronic labels at the same time;

7. Some data information can be written into the label;

8. The data transmission rate is faster than low frequency, and the price is not very expensive.

Advantages of ARM embedded development board

1. Convenience, mainly reflected in the later development, that is, directly developing applications on the operating system. Unlike MCU, everything has to be rewritten. The early stage of operating system transplantation still needs people to do it.

2. Security, which is a feature of Linux. The Linux kernel is separated from the user space memory management, and the system will not die due to a single program error of the user. This has not been seen in the software development of single chip microcomputer.

3. Introduce the process management and scheduling system to make the system run more efficiently. Most of the traditional MCU development is based on interrupt front and back technology, which has limitations on multi task management