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53 lines
1.3 KiB
53 lines
1.3 KiB
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(in-package :cl-battery)
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(defparameter *battery-device* "BAT0")
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(defparameter *ac-device* "AC")
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(defun %path (device name)
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(pathname (format nil "/sys/class/power_supply/~a/~a" device name)))
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(defun stat ()
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(let* ((bat-stat (open (%path *battery-device* "status")))
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(bat-now (open (%path *battery-device* "current_now")))
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(bat-full (open (%path *battery-device* "charge_full")))
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(ac-online (open (%path *ac-device* "online")))
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(bat-cap (open (%path *battery-device* "capacity")))
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(-now (read bat-now))
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(-full (read bat-full))
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(-cap (read bat-cap)))
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(let ((r (list (read-line bat-stat)
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(float (/ -now -full))
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(= 1 (read ac-online))
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-now
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-full)))
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(mapc #'close (list bat-stat bat-now bat-full ac-online bat-cap))
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(values r -cap))))
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(defun status ()
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"Get current charging status"
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(car (stat)))
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(defun capacity ()
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"Capacity"
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(cadr (multiple-value-list (stat))))
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(defun level ()
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"Current level / max level. Also returns (current max) as second value"
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(let ((st (stat)))
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(values (cadr st)
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(cdddr st))))
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(defun charging? ()
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"Is the battery charging"
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(caddr (stat)))
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(mapc #'export
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'(stat
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status
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level
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charging?
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capacity
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*battery-device*
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*ac-device*))
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