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Bananapro #21

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Bananapro #21

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c9aa39f
change owner of active_low as well on export
blecher-at Nov 16, 2017
e3b2660
make export support high/low modes
blecher-at Nov 16, 2017
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15 changes: 11 additions & 4 deletions gpio/gpio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -477,13 +477,18 @@ void doExport (int argc, char *argv [])
exit (1) ;
}

/**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))

/**/ if ((strcasecmp (mode, "in") == 0) || (strcasecmp (mode, "input") == 0))
fprintf (fd, "in\n") ;
else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
else if ((strcasecmp (mode, "out") == 0) || (strcasecmp (mode, "output") == 0))
fprintf (fd, "out\n") ;
else if ((strcasecmp (mode, "high") == 0) || (strcasecmp (mode, "up") == 0))
fprintf (fd, "high\n") ;
else if ((strcasecmp (mode, "low") == 0) || (strcasecmp (mode, "down") == 0))
fprintf (fd, "low\n") ;
else
{
fprintf (stderr, "%s: Invalid mode: %s. Should be in or out\n", argv [1], mode) ;
fprintf (stderr, "%s: Invalid mode: %s. Should be in, out, high or low\n", argv [1], mode) ;
exit (1) ;
}

Expand All @@ -496,7 +501,9 @@ void doExport (int argc, char *argv [])

sprintf (fName, "/sys/class/gpio/gpio%d/edge", pin) ;
changeOwner (argv [0], fName) ;


sprintf (fName, "/sys/class/gpio/gpio%d/active_low", pin) ;
changeOwner (argv [0], fName) ;
}


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