I'm using MCUXpresso 11.01 for the MIMXRT1062DVJ6A, MCUXpresso SDK USB Stack, Rev. 10, 06/2019, and the MCUXpressio usb_example program host_cdc_bm. The data traffic to and from my CDC device is managed in the context of the USB_HostCdcTask handler for the kUSB_HostCdcRunIdle state. Data transmission to my USB device works just fine when I call USB_HostCdcDataSend. But when I call USB_HostCdcDataRecv, my USB device can't respond because the host cannot receive data (IN-NAK). What might I have missed?