基于MCP2515的CAN总线扩展  

Expansion of CAN Bus Based on the Mcp2515

作　　者：吕宝锋[1] 

机构地区：[1]陕西凌云电器集团有限公司设计所,陕西宝鸡721006

出　　处：《电子科技》2012年第6期44-46,94,共4页Electronic Science and Technology

摘　　要：随着数字信号处理器TMS320F2812的广泛应用,扩展TMS320F2812的CAN总线接口成为一种趋势。针对本公司某测试设备的整体设计要求,利用具有SPI接口的独立CAN控制器MCP2515通过TMS320F2812的SPI接口,实现TMS320F2812的CAN总线扩展,满足了该测试设备的控制精度、处理速度以及对外双冗余CAN总线接口的设计要求,具有较强的工程实用价值。With the wide application of digital signal processor TMS320F2812, it has become a trend to expand the CAN bus interface of TMS320F2812. In order to meet the overall design requirements of a test equipment in Shaanxi Lingyun Electronics Group CO. , LTD. , we achieve the CAN bus expansion of the TMS320F2812 by using stand-alone CAN controller MCP2515 which has an SPI interface through the SPI interface of TMS320F2812 and meet the control accuracy and processing speed of the test equipment as well as the design requirement of the external double redundancy CAN bus interface. It is of great practical value.

关 键 词：MCP2515 CAN总线 SPI总线 TMS320F2812 

分 类 号：TP342.3[自动化与计算机技术—计算机系统结构]