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smc: support writing FP values like fan speed (tested on MBP 16,1) #108

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smc: support writing FP values like fan speed (tested on MBP 16,1) #108

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14 changes: 13 additions & 1 deletion smc-command/smc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -648,6 +648,7 @@ void usage(char* prog)
printf(" -k <key> : key to manipulate\n");
printf(" -l : list all keys and values\n");
printf(" -r : read the value of a key\n");
printf(" -p <value> : write the specified integer value to a floating point key\n");
printf(" -w <value> : write the specified value to a key\n");
printf(" -v : version\n");
printf("\n");
Expand Down Expand Up @@ -684,7 +685,7 @@ int main(int argc, char *argv[])
UInt32Char_t key = { 0 };
SMCVal_t val;

while ((c = getopt(argc, argv, "fthk:lrw:v")) != -1)
while ((c = getopt(argc, argv, "fthk:lp:rw:v")) != -1)
{
switch(c)
{
Expand All @@ -708,6 +709,17 @@ int main(int argc, char *argv[])
printf("%s\n", VERSION);
return 0;
break;
case 'p':
op = OP_WRITE;
{
float fval;
fval = strtof(optarg, NULL);

val.dataSize = 4;
memcpy(val.bytes, &fval, sizeof(fval));
memcpy(val.dataType, DATATYPE_FLT, sizeof(val.dataType));
}
break;
case 'w':
op = OP_WRITE;
{
Expand Down