why I can't run the application through the application start application?

[1329306846]

Hello everyone !

         Rencently I‘m learning Bootloader ， when I  run  the bootlaoder  and  have download  the other application，

I want to run the other application ，but I can't  realize it. 

      Bootlaoder Lcf :

      Application Lcf

And t I use  "app_entry (); " to change bootlaoder to application :

#define APP_StartAddr (*(uint32_t*)0x00004004)

void app_entry(void)
{
(*(void (*)(void))(APP_StartAddr))();   /*run the function via function pointer convert with a certain address*/

while(1);                                                 /*stop here for anyhow*/
}

  Really hope someone can give me some help !

[1329306846]

     Thank you for your  answer.  I have  realized run application through  application start  address in MCU " MPC5744P "by

the way as you tell me . But  I  do not realize it in the MCU "MPC5634m" ，when Bootloader run "app_entry()" , the MCU is reset.

Do you know whether mpc56xx  can change  into other application through application  start address  when Bootloader is running ?

[tony_huang]

Hi,

     Can I make friend with you? I recently  use MPC5744P to develop bootloader. My qq:1931181009.

[rachedguerafi]

Maybe you should change the address to 0x4000 instead of 0x4004
If that didn't work for you then this should do the job:

First define a typedef for the app_entry function as follows:

typedef void (* TAppEntry)(void);

Then you just have to declare the app_entry of that type and set the address value 
TAppEntry app_entry = (TAppEntry) (*((unsigned int *) 0x00004004));

and then call the function simply
app_entry();