摘要
以三星S3C2440(ARM9)处理器和Linux 2.6.32为开发平台,介绍了TI公司生产的16位分辨率的串行AD转换器的工作原理,设计了S3C2440和ADS8344E基于SPI的接口电路,论述了嵌入式Linux下的ADS8344E的驱动程序开发和编译加载过程,编写了相应的驱动程序和采集系统的测试程序。该驱动已用于湿气流量信号采集系统中,测试结果表明:驱动工作正常,各通道的采样结果正确。
Based on S3C2440（ converter with 16-bit resolution ARM9 ） microprocessor and Linux 2.6.32, the working principle of serial AD was introduced,and the interface circuit based on SPI conmmnication between S3C2440 and ADS8344E was designed, as well as the ADS8344E driver＇s development and compiling and loading under the embedded Linux were discussed,including the writing of corresponding driver and test prograins. The driver applied to the acquisition system for the wet gas＇ s flow signal shows that this driver works well and the channel sampling results are right.
出处
《化工自动化及仪表》
CAS
2013年第10期1292-1295,共4页
Control and Instruments in Chemical Industry
