MCBSTR750: START PROBLEM ON POWER-UP

Information in this article applies to:

• MCBSTR750 Evaluation Boards

QUESTION

I have a MCBSTR750 Starter Kit and after power-up the program does not start properly. Is there a work-around?

ANSWER

The problem is due to a missing clock stablization phase in the STR750.s file. Just add the following code which lets the clock stabilize after a power-up:

Reset_Handler


; Wait for clock to stabilize --------------------------------------------------

                LDR     R1, =10000
WAIT            SUBS    R1, R1, #1
                BNE     WAIT


; Setup Global Configuration Register ------------------------------------------

Last Reviewed: Wednesday, November 15, 2006