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Fix intermittent "Cannot find footswitch" on macOS #106

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Merged
rgerganov merged 1 commit into from
Jun 24, 2026
Merged

Fix intermittent "Cannot find footswitch" on macOS #106

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12 changes: 8 additions & 4 deletions src/footswitch.c
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Original file line number Diff line number Diff line change
Expand Up @@ -73,12 +73,10 @@ void usage() {
}

void init_pid(unsigned short vid, unsigned short pid) {
#ifdef OSX
hid_init();
dev = hid_open(vid, pid, NULL);
#else
struct hid_device_info *info = NULL, *ptr = NULL;
hid_init();
// Config protocol is on interface 1. Interface 0 is the keyboard, which
// macOS won't open, so we can't just hid_open() by vid/pid here.
info = hid_enumerate(vid, pid);
ptr = info;
while (ptr != NULL) {
Expand All @@ -89,6 +87,12 @@ void init_pid(unsigned short vid, unsigned short pid) {
ptr = ptr->next;
}
hid_free_enumeration(info);
#ifdef OSX
// Older hidapi (<0.14) doesn't report interface_number on macOS, so the
// loop finds nothing -- fall back to opening by vid/pid.
if (dev == NULL) {
dev = hid_open(vid, pid, NULL);
}
#endif
}

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