Stm32 interrupt when testing the FreeRTOS of the problem

When the test FreeRTOS is running on stm32, it needs to use the interrupt of the timer, then the interrupt is turned on, but the following code will cause the system to panic:

/* Select Priority Group 0 */
Nvic_prioritygroupconfig (nvic_prioritygroup_0);

/* Turn on TIM2 interrupt, Level 0 first priority, Level 0 after priority */
Nvic_initstructure.nvic_irqchannel = TIM2_IRQN;
nvic_initstructure.nvic_irqchannelpreemptionpriority = 0;
Nvic_initstructure.nvic_irqchannelsubpriority = 2;
Nvic_initstructure.nvic_irqchannelcmd = ENABLE;
Nvic_init (&nvic_initstructure);

The priority setting for the above-mentioned red callout is problematic.

Modify the following, then OK

/* Select Priority Group 0 */
Nvic_prioritygroupconfig (nvic_prioritygroup_1);

Stm32 interrupt when testing the FreeRTOS of the problem