pynamics/diagnostics/os_diagnostics.py

from pybricks.parameters import Port
from uerrno import EAGAIN, EBUSY, ECANCELED, EINVAL, EIO, ENODEV, EOPNOTSUPP, EPERM, ETIMEDOUT
class OSDiagnostics:
    def __init__(self, hub, motorclass):
        self.motorclass = motorclass
        self.successfultests = 0
        self.failedtests = {}
    def testenodev(self):
        try:
            # Try to initialize a motor on an empty port (Port.A)
            print("Starting Test 6/9: ENODEV - Device Not Found Error")
            input("Make sure Port A doesn't have anything plugged in, then press Enter.")
            my_motor = self.motorclass(Port.A)
            print("OS detected a motor when there was nothing. You may have allowed missing motors. This is useful for debugging, but not recommended for production as it can cause issues with device control.")
        except OSError as ex:
            # If an OSError was raised, check the specific error code
            if ex.errno == ENODEV:
                print("There is no motor on this port. ENODEV can be thrown and caught.\nCompleted Test 6/9: ENODEV - SUCCESSFUL")
                self.successfultests += 1
            elif ex.errno == EIO:
                print("An unspecified error occurred (EIO).\nCompleted Test 6/9: ENODEV - FAILED")
                self.failedtests["ENODEV"] = "EIO - Unspecified Error"
            else:
                print(f"Another error occurred with code: {ex.errno}.\nCompleted Test 6/9: ENODEV - FAILED")
                self.failedtests["ENODEV"] = ex.errno
    def print_results(self):
        for key, value in self.failedtests():
            print(f"{key}: {value}")