How to use digital pins on ppk2

[maddy81]

Hello,

I wnat to know how we can use the digital pins of the ppk2 I want to send a high signal from my stm32 to ppk2 and than it should start reading the current drawn by my stm32. I am using the ppk2 in source mode. Kindly if someone know please guide.

Thanks in advance

[RoyBellingan]

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.

[AntoineBricard]

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