Embedded Systems

1) First route the long signals like supply 2) Then route the nest farther signal and so on. 3) For nearby signals you can use zero ohm as jumper at the point of crossing 

Making PCBs 1) If you are making Layout in Bottom Side , then you should print the layout as it is. 2) If you are making Layout on Top side, then you should print the layout as mirror image.

1) Finding STDIO Connection tab i) Go to Run Configurations > Double Click Xilinx C/C++ Application (GDB) ii) A new list "echo debug " will be generated. Open that one. In one of the tab you can find "STDIO Connection" 2) Autonegotiation fails when you run the echo program This is because Zybo doesn't contain Marvell or TI PHY chip. It contains Realtek RTL8211E-VL. In order to establish connection, we need to disable autodetect. Go to BSP Settings>lwip141>temac_adapter_options set PHY_LINK_SPEED value as CONFIG_LINKSPEED10 or CONFIG_LINKSPEED100 instead of  CONFIG_LINKSPEED_AUTODETECT 3) LAN Cable unplugged when you run echo program on Zybo I observed that this problem occured when I had set  PHY_LINK_SPEED value as CONFIG_LINKSPEED10 or CONFIG_LINKSPEED1000 and not when CONFIG_LINKSPEED100. Hence I changed the PHY_LINK_SPEED value as CONFIG_LINKSPEED100. 4) Pinging fails from PC to Zybo / or Request Timeout when connecting through Terat...