topic USB_HostCdcDataRecv doesn't get data in MCUXpresso SDK https://community.nxp.com/t5/MCUXpresso-SDK/USB-HostCdcDataRecv-doesn-t-get-data/m-p/917795#M1564 <HTML><HEAD></HEAD><BODY><P>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&nbsp;USB_HostCdcDataSend. But when I call&nbsp;USB_HostCdcDataRecv, my USB device can't&nbsp;respond because the host cannot receive data (IN-NAK). What might I have missed?</P></BODY></HTML> Mon, 14 Oct 2019 19:14:04 GMT jeffthompson 2019-10-14T19:14:04Z USB_HostCdcDataRecv doesn't get data https://community.nxp.com/t5/MCUXpresso-SDK/USB-HostCdcDataRecv-doesn-t-get-data/m-p/917795#M1564 <HTML><HEAD></HEAD><BODY><P>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&nbsp;USB_HostCdcDataSend. But when I call&nbsp;USB_HostCdcDataRecv, my USB device can't&nbsp;respond because the host cannot receive data (IN-NAK). What might I have missed?</P></BODY></HTML> Mon, 14 Oct 2019 19:14:04 GMT https://community.nxp.com/t5/MCUXpresso-SDK/USB-HostCdcDataRecv-doesn-t-get-data/m-p/917795#M1564 jeffthompson 2019-10-14T19:14:04Z Re: USB_HostCdcDataRecv doesn't get data https://community.nxp.com/t5/MCUXpresso-SDK/USB-HostCdcDataRecv-doesn-t-get-data/m-p/917796#M1565 <HTML><HEAD></HEAD><BODY><P>Resolved this myself. I thought we didn't need to worry about hardware flow control, but I was wrong.</P></BODY></HTML> Thu, 17 Oct 2019 13:58:44 GMT https://community.nxp.com/t5/MCUXpresso-SDK/USB-HostCdcDataRecv-doesn-t-get-data/m-p/917796#M1565 jeffthompson 2019-10-17T13:58:44Z