mirror of
https://github.com/AndrewX192/lenovo-sa120-fanspeed-utility
synced 2025-12-06 01:23:19 +00:00
62 lines
1.5 KiB
Python
Executable File
62 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python
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import sys
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import time
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try:
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from StringIO import StringIO
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except ImportError:
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from io import StringIO
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from subprocess import check_output, Popen, PIPE, STDOUT
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def print_speeds(device):
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for i in range(0, 6):
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print("Fan {} speed: {}".format(i, check_output(['sg_ses', '--index=coo,{}'.format(i), '--get=1:2:11', device]).decode('utf-8').split('\n')[0]))
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if len(sys.argv) < 2:
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print("python fancontrol.py /dev/sgX 1-7")
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sys.exit(-1)
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device = sys.argv[1]
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fan = int(sys.argv[2])
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if fan <= 0 or fan > 6:
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raise Exception("Fan speed must be between 1 and 7")
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print_speeds(device)
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print("Reading current configuration...")
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out = check_output(["sg_ses", "-p", "0x2", device, "--raw"]).decode('utf-8')
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s = out.split()
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for i in range(0, 6):
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print("Setting fan {} to {}".format(i, fan))
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idx = 88 + 4 * i
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s[idx+0] = "80"
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s[idx+1] = "00"
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s[idx+2] = "00"
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s[idx+3] = format(1 << 5 | fan & 7, "x")
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output = StringIO()
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off = 0
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count = 0
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line = ''
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while True:
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output.write(s[off])
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off = off + 1
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count = count + 1
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if count == 8 :
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output.write(" ")
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elif count == 16:
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output.write("\n")
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count=0
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else:
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output.write(" ")
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if off >= len(s):
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break
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output.write("\n")
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p = Popen(['sg_ses', '-p', '0x2', device, '--control', '--data', '-'], stdout=PIPE, stdin=PIPE, stderr=PIPE)
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print("Set fan speeds... Waiting to get fan speeds (ctrl+c to skip)")
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print(p.communicate(input=bytearray(output.getvalue(), 'utf-8'))[0].decode('utf-8'))
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time.sleep(10)
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print_speeds(device)
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