forked from zietzm/Helmholtz_Test_Bench
Martin Zietz
38 lines
1005 B
Python
38 lines
1005 B
Python
# import time
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from pyps2000b import PS2000B
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import globals as g
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def set_devices(xPort, yPort, zPort):
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g.xDevice = PS2000B.PS2000B(xPort)
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g.yDevice = PS2000B.PS2000B(yPort)
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g.zDevice = PS2000B.PS2000B(zPort)
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def current_vec(mag_vec): # calculates needed current in each axis for given magnetic field vector
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i_vec = mag_vec/g.Coil_const
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return i_vec
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def set_current_vec(i_vec):
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set_current(g.xDevice, i_vec[0])
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set_current(g.yDevice, i_vec[1])
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set_current(g.zDevice, i_vec[2])
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def set_current(device, value):
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# ToDo: Check behaviour with only current or only voltage set
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# ToDo: Check behaviour when trying to set too high currents
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if value > 0:
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device.current1 = value
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device.voltage2 = 0
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elif value < 0:
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device.voltage1 = 0
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device.current2 = -value
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elif value == 0:
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device.voltage1 = 0
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device.voltage2 = 0
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else:
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raise ValueError("Invalid current value. (This should never happen.)")
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