I2C 调试记录之——无应答 （ACK） 信号

Author：DriverMonkey

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以下是我的调试日志，目前无应答信号的原因未明

 

I have tried to use MCU to control the active Probes(ZS1000) by writing Regsiter(0x46).
When write the I2C register(0x46) , there is no ACK signal come back to MCU(see following picture ).

 

I have tested writing Regsiter(0x46) onWave Runner 640zi, as you told me before.
It's very odd. The Wave Runner 640zistill can write  and read data from the Regsiter(0x46 for writing, 0x47 for reading) ,without any active probe plugging in.