A brief summary of serial ports communication is offered in this paper. This article puts emphasis on analysis and discussion about solutions of multi serial ports communication programming provided by Moxa corporation.
The program is a communicating & controlling program about multi serial ports based on Delphi, it can control orderly the testing system on a spot contact resistance. The control program achieves the functions: locating the probe position precisely and automatically, adjusting the normal contact force by setting control parameters, triggering the voltage meter and reading test datum automatically.
Increasing baud,using multi serial ports worked parallel,condensing communication data and optimizing the program were used simultaneously to improve the real-time property.
This article analyzes the interrupt choking effect when multi serial ports share one 8259抯 interrupt request number, and discusses the processing methods to avoid interrupt choking effect in interrupt service routine.
This paper has given a design of laser atmospheric data and audio transfer system,which with laser as information carrier,single chip microcontroller as manage comuter and DSP as the high speed audio compression parts.The audio signal from microphone,converted by A/D,compressed by DSP,forming a serial string with a speed of 2.4 to 9.6kbps.In the same time ,serial string with a speed of 2.4 to 9.6kbps can be extracted to digital audio signal of 8kHz13bit.Under the supervising of CPU,the compress...
A brief summary of serial ports communication is offered in this paper. This article puts emphasis on analysis and discussion about solutions of multi serial ports communication programming provided by Moxa corporation.
The paper presents a new method that is used to communicate dynamically between multi serial ports or peripherals and one PC. The theory of serial communication is discussed. The multi serial communication based on multithreading technigue with WIN32API is presented. Meanwhile, the elements of influencing serial communication are researched. The method resolves the question of real time responding in the serial communication validly, reduces losing ra...