【摘要】 船舶航行时的各种状态数据和驾驶室内各种声音是失事后事故调查分析的主要依据.通过对船舶航行数据记录仪要记载的数据分析,确定了以Vxworks作为记录设备的软件平台,选取基于ISA总线的音频采集控制芯片为ES1869F,并分析了ES1869F的硬件连接方式以及连接注意事项.通过对PnP的配置和DMA传输方式的选取,完成了ES1869F的初始化和工作方式的选取,编写ES1869F驱动接口函数,实现了音频采集.更多还原

【Abstract】 Various kinds of state data and the driver’s cabin sounds when shipping sails are main bases in the accident investigation and analysis after shipwreck.Through analyzing the object,VxWorks is chosen as the OS,and ES1969F Audio Chip with ISA interface is chosen as the main control chip.The connection with ISA is analyzed.By choosing the configuruation of PnP and the DMA model,the initialization and the working model of ES1869F are determined,finishing the function of gathering sounds.更多还原