About nihaoraja

nihaoraja · 2013-10-29

Posted on October 29, 2013 at 15:56Hello everybody, I'm looking for a working example using OUT Endpoint on STM32F4 Discovery board. I have no success with it. I modified Demo sample for an OUT Endpoint and Custom usage, and try to send one byte rep...

nihaoraja · 2014-03-30

Posted on March 30, 2014 at 17:26Actually after more debugging the only 'dark spot' remaining is the offset added by 'DCD_HandleRxStatusQueueLevel_ISR:ep->xfer_buff += status.b.bcnt;'. 'USB_OTG_ReadPacket' seems to be OK after all. Even though not c...

nihaoraja · 2014-03-30

Posted on March 30, 2014 at 14:47As described in my previous mails, I'm testing my application by sending 1 packet of 64 bytes from PC to the device (Discovery) in OUT transfer. USB analyzer shows that transaction IS OK and packet is ACKed (no probl...

nihaoraja · 2014-03-29

Posted on March 30, 2014 at 00:00There seems to be another problem here - with STM USB OTG library. I see the problem in both ''STM32_USB-Host-Device_Lib_V2.1.0'' and ''STM32F4-Discovery_FW_V1.1.0''. Concern #1 - ''usb_core.c:USB_OTG_ReadPacket'' fu...

nihaoraja · 2014-01-12

Posted on January 12, 2014 at 20:25The reason for the bug was incorrect configuration used for the OUT transfer. The function 'DCD_EP_PrepareRx' has to be used to setup OTG_FS_DOEPTSIZ.XFRSIZ. After setting XFRSIZ to 64 my code started working i.e. ...

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