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64 lines
2.3 KiB
64 lines
2.3 KiB
#!/usr/bin/env python3
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import os
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import time
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import sys
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from datetime import datetime
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def average(avg, sample):
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# Weighted avg between existing value and new sample
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return ((avg[0] * avg[1] + sample) / (avg[1] + 1), avg[1] + 1)
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if __name__ == '__main__':
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start_time = datetime.now()
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try:
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if len(sys.argv) > 1 and sys.argv[1] == "--charge":
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print("not disabling charging")
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else:
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print("disabling charging")
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os.system('echo "0" > /sys/class/power_supply/battery/charging_enabled')
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voltage_average = (0., 0) # average, count
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current_average = (0., 0)
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power_average = (0., 0)
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capacity_average = (0., 0)
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bat_temp_average = (0., 0)
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while 1:
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with open("/sys/class/power_supply/bms/voltage_now") as f:
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voltage = int(f.read()) / 1e6 # volts
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with open("/sys/class/power_supply/bms/current_now") as f:
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current = int(f.read()) / 1e3 # ma
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power = voltage * current
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with open("/sys/class/power_supply/bms/capacity_raw") as f:
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capacity = int(f.read()) / 1e2 # percent
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with open("/sys/class/power_supply/bms/temp") as f:
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bat_temp = int(f.read()) / 1e1 # celsius
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# compute averages
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voltage_average = average(voltage_average, voltage)
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current_average = average(current_average, current)
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power_average = average(power_average, power)
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capacity_average = average(capacity_average, capacity)
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bat_temp_average = average(bat_temp_average, bat_temp)
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print(f"{voltage:.2f} volts {current:12.2f} ma {power:12.2f} mW {capacity:8.2f}% battery {bat_temp:8.1f} degC")
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time.sleep(0.1)
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finally:
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stop_time = datetime.now()
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print("\n----------------------Average-----------------------------------")
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voltage = voltage_average[0]
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current = current_average[0]
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power = power_average[0]
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capacity = capacity_average[0]
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bat_temp = bat_temp_average[0]
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print(f"{voltage:.2f} volts {current:12.2f} ma {power:12.2f} mW {capacity:8.2f}% battery {bat_temp:8.1f} degC")
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print(f" {(stop_time - start_time).total_seconds():.2f} Seconds {voltage_average[1]} samples")
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print("----------------------------------------------------------------")
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# re-enable charging
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os.system('echo "1" > /sys/class/power_supply/battery/charging_enabled')
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print("charging enabled\n")
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