Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by frankvnk on Tue Jan 22 11:39:07 MST 2013
I am trying to get the DM9161PHY working with an LPC1768 + RTOS + LWIP1.4 libraries - mbed compiler (Mini-DK board - see http://mbed.org/users/frankvnk/code/Mini-DK/ for specifications).
- The current lpc_phy_DM9161A.c file can be found at http://mbed.org/users/frankvnk/code/HTTPClient_HelloWorld_DM9161A/
- This code is still under development - not yet cleaned up (lots of commented items).
- The test program i used is at http://mbed.org/users/frankvnk/code/HTTPClient_HelloWorld_DM9161A/

For now, code is only working upto the initialisation (Auto negotiation and obtain IP address) - Ethernet communication is not working (system locks up after IP address is obtained).
I had to change non-blocking read/write to blocking read/write to obtain a working initialisation.
I think there is a timing problem because when i enable several printf's or enable debug options, the test program continues but errors are returned (probably also related to the non-blocking code). Setting the emac-phy clock to its lowest does not resolve the issue.

Has anyone already used the DM9161A PHY (together with lwip1.4 + rtos) or has ideas on what could cause this problem?
I already searched the web extensively for DM9161A code - found several (different) examples but none seems to resolve my issue.