The device changes incoming parallel information (within the microcontroller/PC) to serial data which can be sent on a communication line.Īt the destination, a second UART re-assembles the bits into complete bytes. Most PIC microcontrollers have an internal UART at a specific pins of the microcontrollers but this feature can also be implemented with any pin with Software in most of the compilers like MPLAB XC8.
UART is also a common integrated feature in most microcontrollers today which is useful for communicating serial data (text, numbers, etc.) to your PC. The Universal Asynchronous Receiver/Transmitter (UART) controller is the key component of the serial communications between a device and a PC or between devices. Figure 1: PIC18F26K20 Connected to PC via MAX232Ī serial port interface can be used for serial communication of data (send and receive) where data is sent or received one bit at a time between a personal computer (PC) and various devices supporting this type of protocol like PIC microcontrollers, GPS, GSM modem etc. While other interfaces like Ethernet, FireWire, and USB all send data as a serial stream, the term “serial port” usually identifies hardware more or less compliant to the RS-232 standard, intended to interface with a modem or with a similar communication device. RS232 Serial communication is still widely used in industrial application and with many electronic devices like modems but it is being replaced by the USB in portable devices.
0 kommentar(er)
