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"Simple SCI" doesnt work on S12xDP512

Question asked by underwood on Jul 10, 2013
Latest reply on Aug 2, 2013 by underwood



I'm triying to run the example Code on my MC9S12xDP512 CPU with XGATE enabled. (AN3144SW)

Unfortunately it doesnt work.


1) The Code is written for MC9S12xDT512     -     I dont know if this makes trouble

2) In the main.c the tBuffer struct (Buffer0) which is defined as "extern tBuffer Buffer0 ;" never gets filled with values. So the struct is empty the whole time and nothing will be send!!


3) When Running in Simulation Mode Simple SCI only works when I switch the two declarations of tBuffer Buffer0. That means in main.c there has to be  "tBuffer Buffer0;" and in the xgate.cxgate there's "extern tBuffer Buffer0;" But when I try to run this on my microcontroller the prograsmm stops after a few milliseconds with: "Exeption: Interrupt (Vector 20)"


Can someone help me?