i.MX RT Crossover MCUsのトピックUSB Bulk out packet size problem https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/USB-Bulk-out-packet-size-problem/m-p/990993#M5794 <HTML><HEAD></HEAD><BODY><P>Hi&nbsp;</P><P>I'm using rt1050 usb_device_cdc_vcom demo and trying to modify&nbsp;HS_CDC_VCOM_BULK_OUT_PACKET_SIZE from</P><P>64 to 2048 or larger.</P><P></P><P>It work's fine when the value is set to 1024.</P><P>After change it to 2048 , it sucked while transmit data out.</P><P>Is there any limitation ?</P></BODY></HTML> Thu, 06 Feb 2020 09:20:52 GMT eric_yp_chen 2020-02-06T09:20:52Z USB Bulk out packet size problem https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/USB-Bulk-out-packet-size-problem/m-p/990993#M5794 <HTML><HEAD></HEAD><BODY><P>Hi&nbsp;</P><P>I'm using rt1050 usb_device_cdc_vcom demo and trying to modify&nbsp;HS_CDC_VCOM_BULK_OUT_PACKET_SIZE from</P><P>64 to 2048 or larger.</P><P></P><P>It work's fine when the value is set to 1024.</P><P>After change it to 2048 , it sucked while transmit data out.</P><P>Is there any limitation ?</P></BODY></HTML> Thu, 06 Feb 2020 09:20:52 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/USB-Bulk-out-packet-size-problem/m-p/990993#M5794 eric_yp_chen 2020-02-06T09:20:52Z Re: USB Bulk out packet size problem https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/USB-Bulk-out-packet-size-problem/m-p/990994#M5795 <HTML><HEAD></HEAD><BODY><P>Hello Eric,</P><P></P><P>If you check the Table 42-58 in the reference manual you will see that the maximum packet size the endpoint is capable to receive is 1024, if you want to receive transmission greater than this value I will suggest to partition the package.<span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/103248iC842316A58DBD1F4/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>I hope this helps you.</P><P></P><P>Best Regards,</P><P>Alexis Andalon</P></BODY></HTML> Fri, 07 Feb 2020 22:03:36 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/USB-Bulk-out-packet-size-problem/m-p/990994#M5795 Alexis_A 2020-02-07T22:03:36Z