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您好,
您是按照datasheet Figure 93. 上电时的初始流程 进行初始化的吗?
datasheet 9.5.2.10 章节有读取寄存器时序图,您可以用示波器抓取SPI通信波形以检查读取时序是否满足要求:
下面FAQ 有SPI 调试常见问题和EVM code ,希望对您有帮助:
[FAQ] Common Questions for TI's ADS129x Family of Bio-Potential ADCs