Start up info

k_arthur · ‎2007-05-31

Posted on May 31, 2007 at 17:00

Start up info

k_arthur · ‎2011-05-17

Posted on May 17, 2011 at 09:43

I want to know what's hapenning on start up of mcu? Where to get information about start up sequence? For example where writen about this:

Reset_Addr DCD Reset_Handler

Undef_Addr DCD UndefHandler

SWI_Addr DCD SWIHandler

PAbt_Addr DCD PAbtHandler

DAbt_Addr DCD DAbtHandler

DCD 0 ; Reserved Address

IRQ_Addr DCD IRQHandler

FIQ_Addr DCD FIQHandler

Best regards,

kesart

[ This message was edited by: kesart on 16-05-2007 15:23 ]

jgoril · ‎2011-05-17

Posted on May 17, 2011 at 09:43

IMHO, defining exception vector in this way is not very useful. It is instruction expected at exception address (branch to exception routine or loading PC with exception routine address)...

ase · ‎2011-05-17

Posted on May 17, 2011 at 09:43

Loop in a exception vector location is a quite good method.

Thus any registers do not change from moment of exception and with help JTAG it is easier to identify a place and the reason of exception occurrence (IMHO :D )