joycon_send_usb
if (joycon_using_usb(ctlr) && !joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE, HZ)) {
ret = joycon_send_usb(ctlr, JC_USB_CMD_BAUDRATE_3M, HZ);
ret = joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE, HZ);
joycon_send_usb(ctlr, JC_USB_CMD_NO_TIMEOUT, HZ/10);