38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
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from ina219 import INA219, DeviceRangeError
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from time import sleep
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SHUNT_OHMS = 0.1
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#MAX_EXPECTED_AMPS = 2.0
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MAX_EXPECTED_AMPS = 0.3
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ina = INA219(SHUNT_OHMS, MAX_EXPECTED_AMPS)
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#ina.configure(ina.RANGE_16V, ina.GAIN_1_40MV)
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ina.configure(ina.RANGE_16V)
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marchearret = ''
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def read_ina219():
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try:
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print('Bus Voltage: {0:0.3f}V'.format(ina.voltage()))
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print('Shunt Voltage: {0:0.3f}mV'.format(ina.shunt_voltage()))
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print('Bus Current: {0:0.3f}mA\n'.format(ina.current()))
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fichier = open("data_mot_bloque.txt", "a")
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fichier.write('{0:0.3f}'.format(ina.voltage()))
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fichier.write(' {0:0.3f}'.format(ina.current()))
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iv = ina.voltage()*0.005
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fichier.write(' {0:0.3f}'.format(iv))
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ia = ina.current()*0.005
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fichier.write(' {0:0.3f}\n'.format(ia))
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fichier.close()
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except DeviceRangeError as e:
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# Current out of device range with specified shunt resister
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print(e)
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while marchearret != 'q':
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marchearret = input('Tapez ENTER pour enregistrer une mesure, q pour quitter et n pour une nouvelle série de mesure : ')
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read_ina219()
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if marchearret == 'n':
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fichier = open("data_mot_bloque.txt", "a")
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fichier.write('\n\n')
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fichier.close()
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