Hi Someone.
I already asked here about the troubles with dp83838 and Cortex M4. And that hardware issue was successfully resolved (many thanks to Patrick O'Farrell). But now I get some other problems. I am sorry but I newbie in hw ethernet solutions and that is why I ask you don't swear at me :) I use typical tcp_echo example for stm32f4discovery board. But I can't get communication with my board via ethernet. The mode is RMII. Communication with PHY from MCU is good and for example I can easily read and write PHY registers and the data which I get is correct. I verified this by reading of dp83848 identification regs and comparing with the values which were specified in datasheet.
LEDs:
- SPEED is constantly ON
- ACTIVITY (YELLOW) is ON and blinks shortly from time to time.
- LINK (GREEN) — constantly ON.
Connection LED on my 4-port ethernet router is on.
Signals on RX[1:0] is presented (as I can see with my oscilloscope).
How can I check, if the PHY is functioning properly? What type of cable can be used to check PHY with BIST technology?
Subnet is 192.168.1.0/24. Router IP is 192.168.1.1 (it supports DHCP), my IP is 192.168.1.2 (fixed by MAC via DHCP), the board IP should be 192.168.1.5 (as I can see in diagnostic messages). But at router console I can't see if the
P.S. This is a part of academic research project.
