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The CAN Bus Communication System Based on MCP2515 and $3C2440
Author(s):
LIU Jinmei
,
YAO Xiaoqiong
,
WEI Xuejie
Pages:
10
-
12
Year:
2012
Issue:
1
Journal:
Journal of North China Institute of Aerospace Engineering
Keyword:
Linux
;
S3C2440X
;
MCP2515
;
CAN BUS
;
SPI Interface
;
Abstract:
CAN总线在嵌入式系统开发中有着广泛的应用,多数嵌入式处理器没有CAN总线控制器,所以需要通过外部总线自己扩展CAN总线接口,使S3C2440芯片可以控制CAN总线数据的发送和接收,本文采用MCP2515总线控制器扩展S3C2440芯片的接口功能——利用SPI接口扩展CAN总线接口。本文详细介绍了CAN总线硬件的接口设计,并详细说明嵌入式Linux操作系统上CAN设备驱动程序的具体设计。
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