topic USB in MCUXpresso General https://community.nxp.com/t5/MCUXpresso-General/USB/m-p/755278#M410 <HTML><HEAD></HEAD><BODY><P>I'm using LPC54828 USB HS Host mode (USB_DEVICE_CONFIG_LPCIP3511FS is 1) and I notice that there is a limit of 4096 bytes on a single USB transaction, in the file usb_host_ip3516hs.c&nbsp; suobroutine "USB_HostIp3516HsWriteBulkPipe" there is harcoded this limit "if (transferLength &gt; 4096U) transferLength = 4096U; "</P><P>In my application I need to transfer big chunk of data (200K) at high speed and have to continually make a new request every 4096 bytes make my application quite slow (I'm around the 20 to 30Mbit effective tranfer rate)</P><P></P><P>Is there a way to overcome this limit ?</P></BODY></HTML> Wed, 24 Jan 2018 16:43:28 GMT lucafabris 2018-01-24T16:43:28Z USB https://community.nxp.com/t5/MCUXpresso-General/USB/m-p/755278#M410 <HTML><HEAD></HEAD><BODY><P>I'm using LPC54828 USB HS Host mode (USB_DEVICE_CONFIG_LPCIP3511FS is 1) and I notice that there is a limit of 4096 bytes on a single USB transaction, in the file usb_host_ip3516hs.c&nbsp; suobroutine "USB_HostIp3516HsWriteBulkPipe" there is harcoded this limit "if (transferLength &gt; 4096U) transferLength = 4096U; "</P><P>In my application I need to transfer big chunk of data (200K) at high speed and have to continually make a new request every 4096 bytes make my application quite slow (I'm around the 20 to 30Mbit effective tranfer rate)</P><P></P><P>Is there a way to overcome this limit ?</P></BODY></HTML> Wed, 24 Jan 2018 16:43:28 GMT https://community.nxp.com/t5/MCUXpresso-General/USB/m-p/755278#M410 lucafabris 2018-01-24T16:43:28Z