Posted on March 28, 2017 at 19:35I am trying to execute the example program given by ST for firmware update using USB, I'm able to download and upload the binary image but the jump is not working properly. After the new program has flashed onto new location(sector 2), my Program Counter(PC) is supposed to jump to location 0x08008000, but it is getting stuck in some infinite loop. Can someone help me to sort this out asap please..
Below is the piece of code i'm using..
#include 'usbh_core.h'
#include 'usbh_usr.h'
#include 'usbh_msc_core.h'
#include 'flash_if.h'
USB_OTG_CORE_HANDLE USB_OTG_Core;
USBH_HOST USB_Host;
pFunction Jump_To_Application;
uint32_t JumpAddress;
int main(void)
{
/* STM32 evalboard user initialization */
BSP_Init();
/* Flash unlock */
FLASH_If_FlashUnlock();
/* Test if User button on the Discovery kit is pressed */
if (STM_EVAL_PBGetState(BUTTON_USER) == Bit_RESET)
{
/* Check Vector Table: Test if user code is programmed starting from address
'APPLICATION_ADDRESS' */
if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
{
/* Jump to user application */
JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
Jump_To_Application = (pFunction) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
__set_PSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
Jump_To_Application();
}
}
/* Init Host Library */
USBH_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USB_Host, &USBH_MSC_cb, &USR_Callbacks);
while (1)
{
/* Host Task handler */
USBH_Process(&USB_OTG_Core, &USB_Host);
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief assert_failed
* Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param File: pointer to the source file name
* @param Line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf('Wrong parameters value: file %s on line %d\r\n', file, line) */
/* Infinite loop */
while (1)
{}
}
#endif
