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AD2: how to avoid I2C conflicting with DIOs?

AD2: how to avoid I2C conflicting with DIOs?

Hello, I wrote a Python script to use AD2 as I2C master, controlling two additional digital pins at the same time. I2C is set as per example: dwf.FDwfDigitalI2cRateSet(hdwf, c_double(1e5)) # 100kHz dwf.FDwfDigitalI2cSclSet(hdwf, c_int(0)) # SCL = DIO-0 dwf.FDwfDigitalI2cSdaSet(hdwf, c_int(1)) # SDA = DIO-1 dwf.FDwfDigitalI2cClear(hdwf, byref(iNak)) While I though that setting DIO2 and DIO3 as outputs would no conflict with I2C: #dwf.FDwfDigitalIOOutputEnableSet(hdwf,
Hi @Walter76 With the default clock-stretching option the I2C uses the least significant IOs (DIO 0-9) for state machine, "ROM logic". You could use the higher DIO lines (10-15) : dwf.FDwfDigitalIOOutputEnableSet(hdwf, c_int(0xFC00))     dwf.FDwfDigitalIOOutputSet(hdwf, c_int(0xFC00))  or disable the clock stretching with dwf.FDwfDigitalI2cStretchSet(hdwf, c_int(0)) Also note that you have set output-enable and high-value to different bits, 0x00C0 and 0x000C