Stm32F207ZG New fragment overlaps old data (retransmission?)

ezrab · ‎2014-12-22

Posted on December 23, 2014 at 07:28

hi.

i am working with stm32f207zg ang KSZ8051RNL in RMII i used the web server example with the lwip on it and change the phy register

accordingly

and tested it i am getting alot of error in packages i test it with wireshark after severel refreshes i get New fragment overlaps old data (retransmission?) that repeats severel times and then stops.

these are my defenitions:

EthHandle.Instance = ETH;

EthHandle.Init.MACAddr = macaddress;

EthHandle.Init.AutoNegotiation = ETH_AUTONEGOTIATION_ENABLE;

EthHandle.Init.Speed = ETH_SPEED_100M;

EthHandle.Init.DuplexMode = ETH_MODE_FULLDUPLEX;

EthHandle.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;

EthHandle.Init.RxMode = ETH_RXPOLLING_MODE;

EthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;

EthHandle.Init.PhyAddress = 0x01;

i can also see that register ETH_DMAMFDOCR value always increase in time.

i realy need your help here.

thanks.