Transfer binary data from PC to Infiniium system

This program demonstrates using the :DISK:FILE:WRITe? query to transfer binary data from a file on the host computer PC to the system running the Infiniium application. The binary file is a screen image that is in the script's folder. Any png file will work as long as it is named test_image.png. The program transfers the file's data and not the file. The data is placed in a new file on the Infiniium system named test_image.png.

Example Script

disk-file-write.py

#!python3

"""This program illustrates transferring a file from the host
computer to the disk in the Infiniium XR8 oscilloscope.
"""

# Import modules.
import pyvisa
import sys

# Global variables.
oscilloscope_visa_address = "TCPIP0::localhost::hislip0,4880::INSTR"
timeout = 20000  # 20 seconds.
standard_folder = "C:\\Users\\pw5670\\Documents\\Keysight\\Infiniium\\"


def exit_program():
    """Exit program."""

    # Close connection to oscilloscope.
    sys.stdout.write("Closing oscilloscope connection.\n")
    Infiniium.write(":SYSTem:GTLocal")  # Unlock GUI.
    Infiniium.clear()  # Clear oscilloscope communications interface.
    Infiniium.close()  # Close communications interface to oscilloscope.
    rm.close()  # Close resource manager.
    print("End of program.")
    sys.exit()


def check_error_queue(when):
    """Check error queue."""

    errors_found = False
    while True:
        # Keep reading errors until "No error".
        error_string = Infiniium.query(":SYSTem:ERRor:NEXT? DIAGnostic")
        if error_string:  # If there is an error string value.

            if error_string.find("0,", 0, 2) == -1:  # Not "No error".
                errors_found = True
                print(f"ERROR: {error_string}")

            else:  # "No error"
                break

        else:  # :SYSTem:ERRor:NEXT? DIAGnostic should always return string.
            errors_found = True
            print("ERROR: :SYSTem:ERRor:NEXT? DIAGnostic returned nothing.")
            break

    if errors_found:
        print(f"Exited because error(s) found when: '{when}'")
        exit_program()


# ==========================================================
# Main program:
# ==========================================================

# Connect and initialize oscilloscope.
rm = pyvisa.ResourceManager("C:\\Windows\\System32\\visa64.dll")
try:
    Infiniium = rm.open_resource(oscilloscope_visa_address)
except Exception:
    print(
        f"Unable to connect to oscilloscope at {oscilloscope_visa_address}. Aborting program."
    )
    sys.exit()

Infiniium.timeout = timeout  # Set global timeout.
Infiniium.clear()  # Clear the instrument bus.
# Lock GUI happens automatically.

# Send file from the local computer to the oscilloscope disk.
print("Sending a binary file to the Infiniium system.")
image_file = f"{standard_folder}screen_image.png"
f = open(image_file, "rb")
file_bytes = f.read()
f.close()
message = f':DISK:FILE:WRITe? "{image_file}",'
Infiniium.write_binary_values(message, file_bytes, datatype="s")
success_or_failure = Infiniium.read().strip()
if success_or_failure == "1":
    print(f"File is on Infiniium system: {image_file}")
else:
    print(f"FAILURE writing file to Infiniium system: {image_file}")

# Check error queue.
check_error_queue("End of program")

# Exit program.
exit_program()