Remora - ethernet NVEM / EC300 / EC500 cnc board

Thanks for the support! I've set up a gofundme page.

www.gofundme.com/f/remora-firmware-devel...gn=p_cf+share-flow-1

scotta wrote:

Thanks for the support! I've set up a gofundme page.

www.gofundme.com/f/remora-firmware-devel...gn=p_cf+share-flow-1
 

Done!

Done.
good luck.

Thanks to those who've donated. Everything little bit helps with the wife

With the EC300 out of action, I took the plunge with the loaned NVEM board. I took a copy of the firmware and did a compare with the EC300 firmware. They are a byte for byte match!

If the firmware is the same is the underlying circuit for these boards the same as well...I hope so! 
 

Now that the MCU is removed, the task of tracing the circuit and getting some functionality working. First step is a debug serial output which is working on LPUART 4. I was hoping one of the serial ports was connected to LPUART 1 which would have allowed us to use the FlashLoader tool, but unfortunately we've got LPUART 4 and LPUART 5 routed to the RS232 header and NVMPG Serial connections.

We're definitely on our way with these boards now. 

 

I've also traced the Ethernet PHY connections as well. There's not a lot of good examples using the LAN8720a PHYs with NXP products. I guy in Germany who has the earlier version of the EC500 shared that he has a contact in NXP, and has been kind enough to reach out to their technical support team. Hopefully they come back with some help.