Bootloader Jump the Application I2C problem - stm32

Question

I am trying to jump user application from boot code:
Boot code only include below lines:
int main()
{
HAL_Init();
SystemClock_Config();
// Jump proccess start
uint32_t reset_handler_add=*((volatile uint32_t*)(FLASH_APP_START_ADDRESS+4));
void (*app_reset_handler)(void) = (void*)reset_handler_add;
HAL_RCC_DeInit();
HAL_DeInit();
__HAL_RCC_SYSCFG_CLK_DISABLE();
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;
__disable_irq();
SCB->VTOR = FLASH_APP_START_ADDRESS;
uint32_t msp_value = *((volatile uint32_t*)(FLASH_APP_START_ADDRESS));
__set_MSP(msp_value);
app_reset_handler();
while(1);
}
Also #define FLASH_APP_START_ADDRESS 0x080A0000 this is application code start address.
But when I jump the User application I2C not working .
In the User application I stuck in while (HAL_I2C_GetState(hi2c) != HAL_I2C_STATE_READY) function when I jump the User App. But If User App work on the base 0x080000000 address everything successfull, When I jump I have problem.
I changed flash.Ld file on User app:
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K
CCMRAM (rw) : ORIGIN = 0x10000000, LENGTH = 64K
FLASH (rx) : ORIGIN = 0x080A0000, LENGTH = 256K
}
And changed #define VECT_TAB_OFFSET 0xA0000 value.
Where is the faults ?

Answer 1

There is an I2C init problem in stm32 microcontrollers. I dont know if your issue is related to the bootloader code but I had the same symptoms.
The easiest fix I found for this is to init the I2C clk before initializing the SDA and SCL pins:
void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(i2cHandle->Instance==I2C1)
{
/* USER CODE BEGIN I2C1_MspInit 0 */
/* USER CODE END I2C1_MspInit 0 */
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_I2C1_CLK_ENABLE(); // <------ move this line here
/**I2C1 GPIO Configuration
PB6 ------> I2C1_SCL
PB7 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
...