My only experience with hardware and LabVIEW is controlling instruments using visa. I have an I2C problem I am trying to debug and maybe someone knows if NI makes hardware that will work for me.
I want to trigger an oscilloscope on an I2C write to a specific 24C32 EEPROM address so I can look at the activity preceding that. Could one of the DAQ cards do this and would I need LV Real Time?
I have a Total Phase I2C monitor and I can log the transactions. But some of the transactions are corrupt and there are mysterious erroneous writes to a few different EEPROM memory locations. Interestingly it writes the address of the I2C device to these locations. So I need to look at the waveform immediately preceding one of these unexplained writes.
Maybe the DAQ card can be the scope if I use analog inputs. If I capture the clock and data is there a vi that already exists that will decode the bit stream?
The way I might go about this is with a PIC microcontroller. I can write a program for that which I can send commands to through LabVIEW. I could tell the PIC to make a digital line go high when it sees a particular bit stream and use that to trigger the scope.
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LabVIEW 2012
