How to use digital pins on ppk2 #55

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1. RoyBellingan commented on Oct 7, 2025

   

   RoyBellingan

   on Oct 7, 2025

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   I am having issue too understanding how to use the digital IN, the first issue, is not clear what is the treshold voltage, the second I connected the Vout to D0, set voltage to 3.3 and looks like nothing is beeing detected.
2. AntoineBricard commented on Jul 22, 2026

   

   AntoineBricard

   on Jul 22, 2026

   Last edited by AntoineBricard

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   Hi,
   I also would like to use the LOGIC PORT pin to read the state of button. Is it possible ?
   I wire ppk2 as below:
   

   About the soft environment:

   • Windows 10
   • python 3.14
   • ppk2_api==0.9.2

   And below is the code I'm using:

   def read_logic_port(self):
           # Clear buffer to ensure fresh data
           self.ppk2_device.get_data()
           time.sleep(0.1)
   
           self.ppk2_device.start_measuring()
           time.sleep(0.2)
   
           val = self.ppk2_device.get_data()
           if val !=b'':
               sample, raw_digital = self.ppk2_device.get_samples(val) # First element of list is for ADC
   
           digital_channels = self.ppk2_device.digital_channels(raw_digital)
           for ch in digital_channels:
               # Print last 10 values of each channel
               print(f"Logic port: {ch[-10:]}")
           print()
   
           self.ppk2_device.stop_measuring()
   
           #print(f"Logic port: {samples}")
   

   The PPK2 is set as "Ampere meter" with source voltage=5000mV.
   Toggle DUT power is disabled.

   My issue is that the pin level doesn't change and is always indicated as array of 0. Did I miss something ?

   Best regards,
   Antoine