Application Of Real-Time Multitasking Operating System In Microprinter

The intelligentized embedded system and the interlinkage of embedded system result in the increasing complexity of software that resides in embedded system. The approach to develop software of embedded system with assembly language does not meet the request of application. Introducing Real Time Operating System (RTOS) as a development kit would become the key approach to implement software of embedded system. In this paper, the author firstly analyses the performance of RTOS and the advantage introduced by RTOS to software implementation, which would guide the designer to apply RTOS correctly. And then, with 80C5 1XA CPU, thermal printer software is developed on basis of CMX-RTOS. The author investigates the structure of thermal printer software, and rationally divides the whole software into task modules that are programmed individually. As a result, a sample of thermal printer product is worked out, the test result of which indicates that it is feasible to implement its software with RTOS. Finally, the author sums up the skill of using RTOS and puts forward the points for attention on basis of experience with RTOS, which will benefit the generalization of RTOS to application of embedded system or industry control area.