Solved
H755ZI-Q SysTick Not firing for either core
Hi,
I'm not new to STM32 frimware, however, this is my first with H755. I have uploaded a simple LED flash project to both cores. The LED timing is based on uwTick, but Systick is not firing!
Green LED via M4, Yellow LED via M7.
If I change the code M4 to:-
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
GPIOE->ODR ^= 0x02;
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */And code for M7 to:-
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
GPIOB->ODR ^= 0x01;
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}Stepping through the program manually, both LEDs toggle as expected.
When I run without breaks, the Green LED toggles full speed (as expected), however, the Yellow LED toggles about once per second!
I created the project from CubeIDE - just the basic project from the Nucleo-H755ZI-Q template.
Win11, Cube Version:-
Version: 1.19.0
Build: 25607_20250703_0907 (UTC)
STM32 FW_H7 1.12.1
Can anyone help?
Thanks AG