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Other Parts Discussed in Thread: ADS1220
ads1220 接应变片压力传感器，读取数据不变化。
我在 DRDY 下降沿之后发送24个时钟， 每个时钟时间是10us。 得到ads1220的输出 始终不变化。
ads1220的寄存器配置 0x3E 0x14 0x48 0x00
原理图
