Saulius Jacenas

DEMO9S08QD4: programming through BDM port header

Discussion created by Saulius Jacenas on Oct 23, 2007
Latest reply on Oct 23, 2007 by Saulius Jacenas


Using DEMO9S08QD4 board to program QD4 processors for a while and it works fine. Up till now I was using QD4 DIP socket. Now decided to switch to BDM port header which si located on a side for optional use (have to install pin header). But it does not work. I monitored BDM signals with scope both on pin header and on dip socket and they seem to be ~identical. It just does not want to connect to a chip. I atteched demoboard schematics with red lines which shows that BDM wires to pin header and to dip socket comes from different programmer chip pins and I don't understand why it is not the same one. Maybe someone has a solution, becouse it is much more confortable to use pin header.




Message Edited by t.dowe on 2009-10-27 01:46 PM