import numpy as np

# global variables set in other files
XY_DEVICE = None
Z_DEVICE = None
ARDUINO = None

X_AXIS = None  # object structure: (device, channel, arduino pin, axis index)
Y_AXIS = None
Z_AXIS = None

AXES = None  # list containing [X_AXIS, Y_AXIS, Z_AXIS]

app = None

AXIS_NAMES = ["X-Axis", "Y-Axis", "Z-Axis"]

global CONFIG_FILE

global XY_PORT
global Z_PORT
global RELAY_PINS

global PORTS

# Default Constants:
default_arrays = {
    "coil_const": np.array([38.6, 38.45, 37.9]) * 1e-6,  # Coil constants [x,y,z] [T/A]
    "ambient_field": np.array([30, 30, 30]) * 1e-6,  # ambient magnetic field in measurement area [T]
    "resistance": np.array([1.7, 1.7, 1.7]),  # resistance of [x,y,z] circuits [Ohm]
    "max_watts": np.array([15, 15, 15], dtype=float),  # max. allowed power for [x,y,z] circuits [W]
    "max_volts": np.array([16, 16, 16], dtype=float),  # max. allowed voltage, limited to 16V by used diodes! [V]
}
defaults = {
    "xy_port": "COM1",  # Serial port where PSU for X- and Y-Axes is connected
    "z_port": "COM2",  # Serial port where PSU for Z-Axis is connected
    "relay_pins": [15, 16, 17]  # pin on the arduino for reversing [x,y,z] polarity
}