Hi, First of all DP83484 has a few versions. I worked with the DP83484M and DP83484C. I also worked with Marvel Switch 88E6071
I found that all standard IEEE compliant PHY's have 32 registers and the general purpose code supplied by ST should work with all of them. However when I triad modifying the ST code to work with the switch I found out that ST code does not work properly. At least the code I had at that time... You may have some settings issues but most probably you have a hardware problem. If you think your hardware is OK check that the PHY is reset properly. ST code uses a fixed time delay that may not be sufficient. Also check that auto negotiation and other parameters are set properly. After you check everything from the software and still see problems you need to check that hardware is OK. Good luck, Noam. -----Original Message----- From: lwip-users-bounces+noam=silrd....@nongnu.org [mailto:lwip-users-bounces+noam=silrd....@nongnu.org] On Behalf Of pcu Sent: Thursday, June 12, 2014 6:20 PM To: lwip-users@nongnu.org Subject: [lwip-users] change PHY and strange behaviour Hello, I changed my PHY from DP83848 in MII to LAN8720 in RMII. Initialisation in code seems correct, and signals also (REFCLOCK...) But I got a strange ping answer starts at 500ms, decrease to 1ms and roll again. I test my webserver and it is also very slow. <http://lwip.100.n7.nabble.com/file/n22776/Capture.gif> An Idea, or where to look? I think it is a detail but what... I'm on STM32F4 + Freertos. Thank you. -- View this message in context: http://lwip.100.n7.nabble.com/change-PHY-and-strange-behaviour-tp22776.h tml Sent from the lwip-users mailing list archive at Nabble.com. _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ************************************************************************ ************ This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses. ************************************************************************ ************ ************************************************************************************ This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses. ************************************************************************************ _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users