topic Isochronous Transfer in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Isochronous-Transfer/m-p/516863#M1890 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by NaveedAhmed on Mon Dec 21 01:59:12 MST 2015</STRONG><BR /><SPAN>Hi,</SPAN><BR /><SPAN>For the Acquisition of real time data i want to implement the isochronous transfer. </SPAN><BR /><SPAN>Please guide me where to start. i am working on LPC1768 and Windows 7 x64.</SPAN><BR /><SPAN>Thanks in advance</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:23:48 GMT lpcware 2016-06-15T17:23:48Z Isochronous Transfer https://community.nxp.com/t5/LPC-Microcontrollers/Isochronous-Transfer/m-p/516863#M1890 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by NaveedAhmed on Mon Dec 21 01:59:12 MST 2015</STRONG><BR /><SPAN>Hi,</SPAN><BR /><SPAN>For the Acquisition of real time data i want to implement the isochronous transfer. </SPAN><BR /><SPAN>Please guide me where to start. i am working on LPC1768 and Windows 7 x64.</SPAN><BR /><SPAN>Thanks in advance</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:23:48 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Isochronous-Transfer/m-p/516863#M1890 lpcware 2016-06-15T17:23:48Z Re: Isochronous Transfer https://community.nxp.com/t5/LPC-Microcontrollers/Isochronous-Transfer/m-p/516864#M1891 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by rocketdawg on Mon Dec 21 09:17:24 MST 2015</STRONG><BR /><SPAN>You posted in a LPC17xx fourm.&nbsp; The LPC17xx has a Full Speed USB port 12Mbs, not high speed which is 480Mbs.&nbsp; It has a 1 millisecond frame rate.&nbsp; That means the Host may poll the device at no more than once every 1ms.&nbsp; It does not matter which transfer type you use, either bulk or isoch, it can not go faster than 1ms frame rate and either transfer will provide a packet at that rate.</SPAN><BR /><SPAN>There are no samples in LPCOpen that use Iscoch transfers, so you will have to write that code yourself.</SPAN><BR /><BR /><SPAN>although the target is a High speed LPC43xx the discussion is still relevant. </SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=https%3A%2F%2Fwww.lpcware.com%2Fcontent%2Fforum%2Fusb-isochronous-transfer" rel="nofollow" target="_blank">https://www.lpcware.com/content/forum/usb-isochronous-transfer</A></SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:23:49 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Isochronous-Transfer/m-p/516864#M1891 lpcware 2016-06-15T17:23:49Z