本文選題：SC + UART�。� 參考：《儀表技術與傳感器》2014年05期

【摘要】：在ARM9處理器S3C2440上設計RS485通信接口,實現(xiàn)與總線上其他設備的通信,利用ARM9處理器內(nèi)部集成的UART外設和RSM485CT模塊組成RS485通信硬件接口,在嵌入式Linux系統(tǒng)下設計RS485通信程序?qū)崿F(xiàn)與RS485總線上的其他外設間的數(shù)據(jù)互通。實驗效果良好,表明該設計是行之有效的。文中在介紹了通信接口的硬件設計、Linux下RS485驅(qū)動設計、通信程序設計的同時,重點介紹了Linux系統(tǒng)下RS485通信程序的編寫方法以及RS485總線上設備通信的實現(xiàn)過程。
[Abstract]:The RS485 communication interface is designed on the ARM9 processor S3C2440 to realize the communication with other devices on the bus. The RS485 communication hardware interface is composed of the UART peripheral and RSM485CT module integrated within the ARM9 processor. The communication program of RS485 is designed in embedded Linux system to realize the data exchange with other peripherals on RS485 bus. The experimental results show that the design is effective. This paper introduces the hardware design of the communication interface and the design of the RS485 driver under Linux, and the design of the communication program. At the same time, the programming method of the RS485 communication program under the Linux system and the realization process of the device communication on the RS485 bus are emphatically introduced.
【作者單位】： 東莞理工學院電子工程學院;華南理工大學電子與信息學院;
【基金】：國家自然科學基金科學儀器基礎研究專款項目(11127508) 國家自然科學重大基金項目(10890095) 東莞市科技計劃項目(2012108102040)
【分類號】：TN919

【參考文獻】

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1 穆斌,羅s，

本文編號：1877552