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d/wmr: WMR Controller (BT): Don't waste CPU cycles when reading

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This commit is contained in:
Nima01 2021-12-12 21:37:50 +01:00
parent 2d48a9bca2
commit b3e0f5bc6a
1 changed files with 4 additions and 4 deletions
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8
src/xrt/drivers/wmr/wmr_bt_controller.c
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@ -53,11 +53,11 @@ read_packets(struct wmr_bt_controller *d)
{
unsigned char buffer[WMR_MOTION_CONTROLLER_MSG_BUFFER_SIZE];
// Get the timing as close to packet reception as possible.
uint64_t now_ns = os_monotonic_get_ns();
// Better cpu efficiency with blocking reads instead of multiple reads.
int size = os_hid_read(d->controller_hid, buffer, sizeof(buffer), 500);
// Read must be non-blocking for reliable timing.
int size = os_hid_read(d->controller_hid, buffer, sizeof(buffer), 0);
// Get the timing as close to reading packet as possible.
uint64_t now_ns = os_monotonic_get_ns();
if (size < 0) {
WMR_ERROR(d, "WMR Controller (Bluetooth): Error reading from device");