These boards intermittently fail to boot up correctly (from MOD-DEV-100 v1.09).
When they fail, the following is sent to out COM0.
Code: Select all
Boot record INVALID Csum:F544
Reset Jumper Detected
nb>Welcome to the Netburner Alternate Boot Monitor Command Program
Netburner MCF5441x Alternate Image Monitor V1.02 Feb 18 2014 19:15:02
HELP for help
nb>
When it fails, the board is visible to IPSetup and shows that it is running Alternate Image Monitor, but the ipaddress, MAC address and other configuration parameters shown by IPSetup are wrong (random?), the MAC address shown on the 'SETUP' menu of the Boot Monitor is setup
all zeros
But it also sometimes boots up correctly and runs my application, everything works normally.
These boards were programmed while in our own carrier board, but we have used this carrier board to successfully program hundreds of MOD5441X with no problem.
My guess is that sometimes on startup, the 32MB parallel flash is not read correctly, (invalid app and bad system parameters).
Does anyone have any suggestions?