STM32F769i board novice question

Hi Community,

I try to develop my first test app for the STM32F69i board. I got STM32CubeIDE environment working, generated project with all the default settings for this board. According to STM32F769i docs user LED1 and 2 are hooked up to port J, pins 5 and 13, so within the main() method, after HALL_Init(), I placed the following code:

while (1) {
 HAL_GPIO_TogglePin(GPIOJ, GPIO_PIN_5);
 HAL_GPIO_TogglePin(GPIOJ, GPIO_PIN_13);
 HAL_Delay(1000);
}

I can step-through the code in debug, I believe it executes but the LEDs do not blink.

What am I missing?