69 lines
1.4 KiB
Python
69 lines
1.4 KiB
Python
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"""
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https://blog.gtwang.org/iot/raspberry-pi-vcgencmd-hardware-information/
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"""
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from biopro.util.sys import system_call
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from biopro.util.text import part_suffix
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_RUNTIME_COMPILE = False
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def measure_clock(clock: str) -> int:
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"""
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:param clock: could be arm, core, h264, isp, v3d, uart, pwm, emmc, pixel, vec, hdmi, dpi
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:return: frequency in Hz
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"""
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try:
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output = system_call('vcgencmd', 'measure_clock', clock).strip()
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_, freq = part_suffix(output, '=')
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return int(freq)
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except FileNotFoundError:
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if _RUNTIME_COMPILE:
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raise
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else:
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return 0
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def measure_volts(hd: str = 'core') -> float:
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"""
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:param hd: core, sdram_c, sdram_i, sdram_p
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:return:
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"""
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try:
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output = system_call('vcgencmd', 'measure_volts', hd).strip()
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_, volt = part_suffix(output, '=')
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if volt.endswith('V'):
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volt = volt[:-1]
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return float(volt)
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except FileNotFoundError:
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if _RUNTIME_COMPILE:
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raise
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else:
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return 0.0
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def measure_temp() -> float:
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"""
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:return: temperature in 'C
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"""
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try:
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output = system_call('vcgencmd', 'measure_temp').strip()
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_, temp = part_suffix(output, '=')
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if temp.endswith("'C"):
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temp = temp[:-2]
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return float(temp)
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except FileNotFoundError:
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if _RUNTIME_COMPILE:
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raise
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else:
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return 0.0
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