AnsweredAssumed Answered

Flash loader demo

Question asked by hajiani.koorosh on Sep 1, 2015
Latest reply on Sep 2, 2015 by hajiani.koorosh
I'm trying to use the Flash Loader demo Tool to down load my hex file.
I need to bypass the hard wiring of the boot pins to 0 and 1 and just jump to where the boot loader reset handler resides.
I searched the forum and I found the following piece of code which is executed right off the reset. You can say it is my reset handler .

Reset_Handler    PROC
                 EXPORT  Reset_Handler             [WEAK]

               LDR     R0, =0x40023844 ; RCC_APB2ENR
                LDR     R1, =0x00004000 ; ENABLE SYSCFG CLOCK
                STR     R1, [R0, #0]
                LDR     R0, =0x40013800 ; SYSCFG_MEMRMP
                LDR     R1, =0x00000001 ; MAP ROM AT ZERO
                STR     R1, [R0, #0]
                LDR     R0, =0x1FFF0000 ; ROM BASE
                LDR     SP,[R0, #0]     ; SP @ +0
                LDR     R0,[R0, #4]     ; PC @ +4
                BX      R0


I can see that it is jumping to the system memory region both by single stepping and letting it run however when firing the demo Tool ,I keep getting error messages and no response, don't know if anyone has the same issue or know the solutions.
any help is much appreciated.