TSE with NicheStack Problem

[Altera_Forum]

I've got the NicheStack license. 

I'm using NIOSII IDE 8.1 I've got the DP83848C ethernet chip.  I've got a custom CPU without the I2C.   My project based on the Simple Socket Server with a Static IP Address. I have made sure that I assign a MAC address based on the Static IP Address and have written it into Flash. (keeping with the logic of the network_utilities.c for the NEEK)  The problem is that during "tse_mac_init" sometimes: 1. Messages look good and I can connect   2. sometimes all the messages look good and I CANNOT connect   3. sometimes I get WARNINGS and can connect WARNING : PHY[0.0] - PHY not capable for Auto-Negotation  4. sometimes I get WARNINGS and CANNOT connect WARNING : PHY[0.0] - PHY not capable for Auto-Negotation  3. And EVEN sometimes I get ERRORS and I CAN connect ERROR : MAC Group[0] - No PHY connected! ERROR : PHY[0.0] - No PHY connected! Speed = 100, Duplex = Full  There is no rhyme or reason to this as the code is the same. Could it be an interaction with the uC-OS and the HAL ?  Any suggestions. Thanks in advance Janet

[Altera_Forum]

For starters, it looks like you have a problem on the MDIO interface between the TSE core and you PHY chip. Could you connect Signaltap probes, or a scope on the pins and check if the signals are ok? 

It could also come from bad initialization of the PHY chip. Are you sending it a reset pulse on start up?