Hello,
i work with STM32G070KBT and i jump from my code to the buitin ST bootloader. Then i use SPI to upload my new code/binary and send the Go command. I receive an ACK but nothing happen. My code is not executet or stops working early.
If the bootloader starts after a full chips erase (done with STM32CubeProgrammer) the Go command works as expected.
My jump code looks like:
#define SYSTEM_MEMORY_ADDRESS 0x1FFF0000
void jump_to_bootloader()
// https://github.com/markusgritsch/SilF4ware/blob/master/SilF4ware/drv_reset.c
// https://stm32f4-discovery.net/2017/04/tutorial-jump-system-memory-software-stm32/
{
HAL_NVIC_DisableIRQ(EXTI4_15_IRQn);
while (HAL_NVIC_GetPendingIRQ(EXTI4_15_IRQn)) {
HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_9);
HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_10);
HAL_NVIC_ClearPendingIRQ(EXTI4_15_IRQn);
}
HAL_RCC_DeInit(); // disable reset and clock control
HAL_DeInit();
SysTick->CTRL = 0; // disable systick timer
SysTick->LOAD = 0;
SysTick->VAL = 0;
// remap system memory to address 0x00000000
__HAL_SYSCFG_REMAPMEMORY_SYSTEMFLASH();
// set main stack pointer in SRAM location
// This step must be done last otherwise local variables in this function
// don't have proper value since stack pointer is located on different position
__set_MSP(*(uint32_t *)SYSTEM_MEMORY_ADDRESS);
// set jump memory location for system memory
// use address with 4 bytes offset which specifies jump location where program starts
void (*SysMemBootJump)(void);
SysMemBootJump = (void (*)(void)) (*((uint32_t *)(SYSTEM_MEMORY_ADDRESS + 4)));
// actually call our function to jump to set location and start system memory execution
SysMemBootJump();
// start firmware download over SPI
}
The project is create with STM32CubeMX and uses some GPIOs, the same SPI interface in slave mode the bootloader use and TIM6.
Have you some ideas what can i try to do?
Without a debugger, how can I tell if my code is even running? With debugger (ST-Link V2 via SWD interface) the bootloader is not working properly :\
Regards
Klaus
