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Topic: Connecting an Ethernet PHY to Arduino Due (Read 45 times) previous topic - next topic

Palliser

Hello Graham,

Yes. The DM9161 board is similar to the DP83848. I chose it as my first option, given that the hardware (pull-up, pull-down PHY address resistors, filter/noise capacitors, Crystal, timing, etc.) is more than proven by Atmel for the most of their development kits. Thank you for the good wishes.

here a picture of AS-DM9161



Regards!

Palliser

After a long wait, I just received yesterday my AS-DM9161 board. I really hope to have better luck with it. I have been trying to modify the EMAC library to make the DP83848 work with the Taijiuino but only communication errors. I will keep you posted once I start getting communication between Taijiuino EMAC and Ethernet PHY DM9161. regards!
Here a picture of the Russian board!


TonyT3P3

Hey Palliser, how are you getting on with interfacing your phy to the Due? I don't mean to chase you but I am keen to see the library/ethernet files as I would like to add support for a different PHY.

Palliser

Hello TonyT3P3,

Following is a summary of my progress with the EMAC/PHY interface.

Firstly, I got good Ethernet communication between my new Russian PHY board (AS-DM9161) with the SAM3X-EK board. I performed this with the purpouse of verify the functionality of this PHY board because is slightly different from the one embedded in the SAM3X-EK.

Here a log excerpt of the EMAC/external EPHY communication between SAM3X-EK board and AS-DM9161 Ethernet PHY board:

Code: [Select]
-- MAC 0:4:25:1c:a0:2
-- IP  192.168.0.2
Link detected.
-- IP  255.255.255.255
-- IP  20.254.181.156
======= IP   60 bytes, HEADER ==========
IP Version        = v.4
Header Length     = 5
Type of service   = 0x0
Total IP Length   = 0x22
ID                = 0x4B8E
Header Checksum   = 0x2E92  Protocol          =
UDP

IP Src Address    = 192:168:0:3
IP Dest Address   = 255:255:255:255
----------------------------------------
-- IP  255.255.255.255
-- IP  20.254.181.156
======= IP   60 bytes, HEADER ==========
IP Version        = v.4
Header Length     = 5
Type of service   = 0x0
Total IP Length   = 0x2C
ID                = 0x4B91
Header Checksum   = 0xAF94  Protocol          =
ICMP

IP Src Address    = 192:168:0:3
IP Dest Address   = 255:255:255:255
----------------------------------------
...


So far so good.

Then, I started tests between the Taijiuino board and the AS-DM9161,but hitherto, I have not managed to get communication between them. The EMAC sample sketch compiles OK in the Arduino IDE but I believe
I am overlooking something, specially in the Pio/pin configuration (in the variant files).

Here a log excerpt of the Taijiuino DUE EMAC/external EPHY:

Code: [Select]

-- MAC 0:4:25:1c:a0:2
-- IP  192.168.0.2
Link detected.


I can see leds activity (FD/100/LINK) in the DM9161 but I am getting the same log even with the Taijiuino disconnected from the PHY.

Thus and unlike my CAN project, I have decided to publish and keep updates of the EMAC library files here (see my very first post in this thread). This files are the ones I am using now. The purpose of this is to obtain help from you guys.

Because the sketch compiles OK, I think that the only way to help testing the code, is to do it with the Taijiuino board and a DM9161 based board. Anyway, any comment/revision of the code is very welcome.

Other exercise I am going to do this week, is to run the same test SAM3X-EK/DM9161 but with the DP83848 to confirm that it works also, thus, using this second PHY as another option.

For your information, I am also trying to get direct support from Atmel. Thank you.

Palliser

Whoever ventures to help me with the Ethernet MAC library, here what I have done regarding the EMAC pin configuration:

-I added in the variant.cpp the EMAC pin definition (lines 291 to 301) and the initialization of the EMAC Pio configuration (lines 431 to 485).
-I added in the variant.h the defines of the EMAC pins (lines 187 to 202).

Here a picture of my test of the DM9161 board. My test with the DP83848 still pending. I also still trying to get help from Atmel technical support team.
But don't worry, I will solve it.



Regards!



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