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采用STM32读ADS1198数据，读取的数据很正常，配置寄存器，配置采样率为500SPS，采500个点时间理论为1S，我却花了4S；配置成1K采样率，采500个点时间比之前稍微少了点，但也是4S左右，感觉采样率不受我控制。
根据手册, Data Rate: 125SPS to 8kSPS
你这个速率完全支持. 不应该是芯片有问题, 估计是你的设置或者软件的问题,
可以先捕捉一下通信波形验证一下配置的数据和通信时序
