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We have LPC2378 based main board with DP83848i Ethernet physical layer in addition. This Ethernet is optional and will be populated when required. We use KEIL RTOS with RL-ARM library for stack etc. There is software setting which decides whether to initialize ethernet on power on or not.
Our problem comes here when DP83848i(RMII mode) is not there and software is trying to initialize. After this step, no execution. ARM just hangs. Checked with U-LINK 2 debugger, JTAG control also goes out of control.
Could anyboby through some light on this. Currently we solved by keing in some code to bypass ethernet initialization after power on and then say no to software settings.
Thanks
V.Nagarajan
have you checked whether any exceptions are generated during startup?
Startup is fine with phy chip and it is ok without phy upto init_ethernet().
Since U-Link2 is goes out of control, not able to decide where the control is.
then try using leds (in exception ISR...?) try using a scope maybe it is a watchdog issue?
Hi nagaraj,
Please check the Chip version and configure the Pins for Ethernet.
with regards, Murthy.R