Facing difficulty to access internal bootloader in STM32H743BIT6
Hi Guys,
I working on one project where we need to enter into system bootloader for updating new firmware through the UART from software without using BOOT0 Pin.
But I am facing problem in entering bootloader through software(user application).
I had created function to enter bootloader.
I am successfully entering into system bootloader when I directly call the JumpToSystemBootLoader() ,but when I call through HAL_UART_RxCpltCallback I don't see any response from the bootloader (getting error in STM32CubeProg).
void JumpToSystemBootLoader (void)
{
void (*JumpToSysBoot)(void); /* declare a function pointer */
__IO uint32_t sys_boot_address = 0;
uint8_t indx = 0;
sys_boot_address = 0x1FF09800;/* STM32H7 system BootLoader address */
/* Disable all enabled interrupts in NVIC and Clear all pending interrupt requests in NVIC */
for (indx = 0; indx < 8; indx++)
{
NVIC->ICER[indx] = 0xFFFFFFFF;
NVIC->ICPR[indx] = 0xFFFFFFFF;
}
/* Disable all enabled peripherals, use HSI clock */
HAL_RCC_DeInit();
/* Disable all interrupts */
__set_PRIMASK(1);
/* Disable SysTick */
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;
/* Enable all interrupts */
__set_PRIMASK(0);
JumpToSysBoot = (void (*)(void)) (*((uint32_t *) (sys_boot_address + 4)));
/* Activate the MSP */
__set_MSP(*(uint32_t *)sys_boot_address);
__set_CONTROL(0);
/* Jump to the system BootLoader */
JumpToSysBoot();
/* It will not execute if jump is successful*/
while (1)
{
__NOP();
}
}
Method 1: In this below method, successfully connecting with UART and updating new firmware
int main(void)
{
while (1)
{
HAL_UART_Receive(&huart1, (uint8_t*)RxBuffer, 2, 200);
/*If KEY matches with RXBuffer then enter into System bootloader*/
(strcmp(KEY, RxBuffer) == 0)
{
HAL_UART_Transmit(&huart1, (uint8_t*)TxBuffer, strlen(TxBuffer),200);
JumpToSystemBootLoader();
}
}
}
Method 2: In this below method, didn't getting any response from System bootloader
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if (strcmp(BOOT_MODE, RxBuffer) == 0)
{
__HAL_UART_DISABLE_IT(&huart1, UART_IT_RXNE);
HAL_UART_Transmit(&huart1, (uint8_t*)TxBuffer, strlen(TxBuffer),200);
JumpToSystemBootLoader();
}
}
int main(void)
{
__HAL_UART_ENABLE_IT(&huart1, UART_IT_RXNE);
HAL_UART_Receive_IT(&huart1, (uint8_t*)RxBuffer, 2);
while (1)
{
}
}
Thank You