なかのにっき

Welcome to the Python installation manager configuration helper.

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Windows is not configured to allow paths longer than 260 characters.

Python and some other apps can exceed this limit, but it requires changing a
system-wide setting, which may need an administrator to approve, and will
require a reboot. Some packages may fail to install without long path support
enabled.
Update setting now? [y/N]

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The global shortcuts directory is not configured.

Configuring this enables commands like python3.14.exe to run from your
terminal, but is not needed for the python or py commands (for example, py
-V:3.14).

We can add the directory (C:\Users\nakano\AppData\Local\Python\bin) to PATH
now, but you will need to restart your terminal to use it. The entry will be
removed if you run py uninstall --purge, or else you can remove it manually when
uninstalling Python.
Add commands directory to your PATH now? [y/N]

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You do not have the latest Python runtime.

Install the current latest version of CPython? If not, you can use 'py install
default' later to install.

Install CPython now? [Y/n]

view online help? [y/N]

C:\Users\nakano>python3 --version
Python 3.14.2

C:\Users\nakano> python3 -i 

C:\Users\nakano>pip install pyvisa
'pip' は、内部コマンドまたは外部コマンド、
操作可能なプログラムまたはバッチ ファイルとして認識されていません。

C:\Users\nakano>python3 -m pip install pyvisa
Collecting pyvisa
  Downloading pyvisa-1.15.0-py3-none-any.whl.metadata (7.1 kB)
Collecting typing_extensions>=4.0.0 (from pyvisa)
  Downloading typing_extensions-4.15.0-py3-none-any.whl.metadata (3.3 kB)
Downloading pyvisa-1.15.0-py3-none-any.whl (179 kB)
Downloading typing_extensions-4.15.0-py3-none-any.whl (44 kB)
Installing collected packages: typing_extensions, pyvisa
[....]
WARNING: The scripts pyvisa-info.exe and pyvisa-shell.exe are installed in 'C:\Users\nakano\AppData\Local\Python\pythoncore-3.14-64\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed pyvisa-1.15.0 typing_extensions-4.15.0

U:\common\archive\WinDriver

import pyvisa
import sys
from time import sleep

class R6144:
    def __init__(self, rm, visaId):
        try:
            self.R6144 = rm.open_resource(visaId)    #R6144
        except:
            print("Cannot connect to R6144")
            while True:
                key = input("Press Enter to exit.")
                if not key:
                    break
            sys.exit()
        print("R6144 is ready for Voltage Output Op.")

    def sendcmd(self, cmdstr):
        self.R6144.write(cmdstr)

def VoltStr(arg1):
    if arg1[0] not in "+-":
        print("Error: argument must start with + or -")
        sys.exit(1)
    try:
        value = float(arg1)
    except ValueError:
        print("Error: invalid numeric value")
        sys.exit(1) 
    if not -2.0 <= value <= 2.0:
        print("Error: value out of range (-2 to +2)")
        sys.exit(1) 
    return format(value, "+.3f")

if len(sys.argv) < 2:
    print("Usage: python3 R6144.py [+|-] volt_val")
    sys.exit(1)

vout = VoltStr(sys.argv[1])

print(vout)

rm = pyvisa.ResourceManager()
r6144 = R6144(rm, 'GPIB0::10::INSTR')

r6144.sendcmd(f"V5 D{vout}V") # V5 can output -16 ~ +16 V

r6144.sendcmd("E")
sleep(3)
r6144.sendcmd("H")