| PPC8270通过SPI与AD7890进行通信的实现 |
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| 引用本文： | 冯军波.PPC8270通过SPI与AD7890进行通信的实现[J].航空计算技术,2017,47(3). |
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| 作者姓名： | 冯军波 |
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| 作者单位： | 中航工业西安航空计算技术研究所,陕西 西安,710068 |
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| 摘 要： | 串行数/模转换器AD7890常用于采集电压数据,为了将采集到的数据便捷地传给处理器,可以采用处理器PPC8270内部的SPI总线作为媒介,实现与AD7890之间的通信.给出了SPI的基本结构以及驱动程序,并设计了测试程序,测试结果表明采集器与处理器之间数据传输正确.
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| 关 键 词： | PPC SPI 串行数/模转换器 |
Implementation of PPC8270 Communicates with AD7890 through SPI |
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| FENG Jun-bo.Implementation of PPC8270 Communicates with AD7890 through SPI[J].Aeronautical Computer Technique,2017,47(3). |
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| Authors: | FENG Jun-bo |
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| Abstract: | The Serial A/D converter AD7890 is commonly used to collect voltage data.In order to transfer the collected data to the processor conveniently,the SPI bus within the processor PPC8270 can be used as the medium to realize the communication with the AD7890.This paper gives the basic structure and driver of SPI,and designs the test program.The test result shows that the data is transmitted correctly between the collector and the processor. |
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| Keywords: | PPC SPI serial A/D converter |
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