AnsweredAssumed Answered

Issue transmitting USB data

Question asked by Daniel Goodwin on May 15, 2015
Latest reply on May 20, 2015 by Daniel Goodwin



I am currently attempting to create a USB interface for my project that will act as a virtual com port.


I am stuck in the enumeration stage of the USB communication.


I am receiving the setup packet from the computer, asking for the device descriptor to be sent. I set the address bytes of both of the ODD and EVEN buffer descriptors for the IN on endpoint 0 to be the address of my device descriptor in memory.


I get an error message after that (DMAERR). Can anyone please help point me in the correct direction to solving this problem?