LPC MicrocontrollersのトピックRe: Host not sending bulk out data https://community.nxp.com/t5/LPC-Microcontrollers/Host-not-sending-bulk-out-data/m-p/525311#M7947 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tinyusb on Fri Nov 29 07:56:28 MST 2013</STRONG><BR /><SPAN>First and foremost, you should check your memory buffer</SPAN><STRONG> which is passed to DMA Descriptor (DD)</STRONG><SPAN>, make sure is it in the USB RAM of lpc23xx.</SPAN></BODY></HTML> Wed, 15 Jun 2016 16:53:11 GMT lpcware 2016-06-15T16:53:11Z Host not sending bulk out data https://community.nxp.com/t5/LPC-Microcontrollers/Host-not-sending-bulk-out-data/m-p/525310#M7946 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Madara on Fri Nov 29 02:54:34 MST 2013</STRONG><BR /><SPAN>I am trying to implement usb msc in lpc2387 using nxpusblib.I can read data from sd card.But when writing, the pc issues a write size of 4KB but i am getting only 512 bytes and in USBlyzer I get the message of USB Bulk transfer cancelled.</SPAN><BR /><BR /><SPAN>I get 512 bytes and then use Endpoint_ClearOUT() to acknowledge and request another packet but no data is received and the DD_status in DMA descriptor always reads 0 meaning no data has been transferred from the host.</SPAN><BR /><BR /><SPAN>How to solve this problem??</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 16:53:11 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Host-not-sending-bulk-out-data/m-p/525310#M7946 lpcware 2016-06-15T16:53:11Z Re: Host not sending bulk out data https://community.nxp.com/t5/LPC-Microcontrollers/Host-not-sending-bulk-out-data/m-p/525311#M7947 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tinyusb on Fri Nov 29 07:56:28 MST 2013</STRONG><BR /><SPAN>First and foremost, you should check your memory buffer</SPAN><STRONG> which is passed to DMA Descriptor (DD)</STRONG><SPAN>, make sure is it in the USB RAM of lpc23xx.</SPAN></BODY></HTML> Wed, 15 Jun 2016 16:53:11 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Host-not-sending-bulk-out-data/m-p/525311#M7947 lpcware 2016-06-15T16:53:11Z