When LPC1768 , as a reference design , it works with lwip tcp example fine.
a udp example can send and receive data from windows app.
We connected a 3 port switch , ksz8863 from microchip , to LPC1768 and the udp is not working.
The status is:
1. There is a link to the switch, it can be read via the same code that reads the phy registers ( mdio and mdc are func1)
2. we can access using bit bang , smi and mii to the chip ( change mdio and mdc to gpio - func0)
3. we tried to use mac mode in the switch rather then phy more , both not working.
Does any one connected to any micro controller a Ethernet switch and worked with lwip?
does it require any changes in the code?
Do we need to configure the switch to work in phy more or mac mode ( just to be sure)
The question can be directly for LPC1768 + ksz8863 + lwip + udp
but also for any micro controller -> port switch -> lwip + udp.
Any information is welcome,
We found the problem
there is PHY ADDRESS
/* The PHY address connected the to MII/RMII */
#define LPC_PHYDEF_PHYADDR 3
the phy address should be 3
because the switch has 3 ports , where there the MII is connected to port 3 now
it was connected to port 1 in the reference design
This is the only change that should be done,