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TDC1000: TDC1000寄存器设定的阈值与实际的现象不符合

Part Number: TDC1000

TDC1000_Config0 A7
TDC1000_Config1 47
TDC1000_Config2 02
TDC1000_Config3 04
TDC1000_Config4 5F
TDC1000_TOF-1 E3
TDC1000_TOF-0 FF
TDC1000_Error_Flags 03
TDC1000_Timeout 03
TDC1000_Clock_Rate 07

我把阈值设为-220mv,回波信号达到阈值后在第一个过零点没有产生STOP信号,在第二个过零点产生STOP信号