[STM32F4] HAL_UART_RxCpltCallback串口接收中断回调不正常

        void vPortValidateInterruptPriority( void )

        {

        uint32_t ulCurrentInterrupt;

        uint8_t ucCurrentPriority;

 

                /* Obtain the number of the currently executing interrupt. */

                ulCurrentInterrupt = vPortGetIPSR();

 

                /* Is the interrupt number a user defined interrupt? */

                if( ulCurrentInterrupt >= portFIRST_USER_INTERRUPT_NUMBER )

                {

                        /* Look up the interrupt's priority. */

                        ucCurrentPriority = pcInterruptPriorityRegisters[ ulCurrentInterrupt ];

 

                        /* The following assertion will fail if a service routine (ISR) for

                        an interrupt that has been assigned a priority above

                        configMAX_SYSCALL_INTERRUPT_PRIORITY calls an ISR safe FreeRTOS API

                        function.  ISR safe FreeRTOS API functions must *only* be called

                        from interrupts that have been assigned a priority at or below

                        configMAX_SYSCALL_INTERRUPT_PRIORITY.

                        Numerically low interrupt priority numbers represent logically high

                        interrupt priorities, therefore the priority of the interrupt must

                        be set to a value equal to or numerically *higher* than

                        configMAX_SYSCALL_INTERRUPT_PRIORITY.

                        Interrupts that        use the FreeRTOS API must not be left at their

                        default priority of        zero as that is the highest possible priority,

                        which is guaranteed to be above configMAX_SYSCALL_INTERRUPT_PRIORITY,

                        and        therefore also guaranteed to be invalid.

                        FreeRTOS maintains separate thread and ISR API functions to ensure

                        interrupt entry is as fast and simple as possible.

                        The following links provide detailed information:

                        http://www.freertos.org/RTOS-Cortex-M3-M4.html

                        http://www.freertos.org/FAQHelp.html */

                        configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );

                }

 

                /* Priority grouping:  The interrupt controller (NVIC) allows the bits

                that define each interrupt's priority to be split between bits that

                define the interrupt's pre-emption priority bits and bits that define

                the interrupt's sub-priority.  For simplicity all bits must be defined

                to be pre-emption priority bits.  The following assertion will fail if

                this is not the case (if some bits represent a sub-priority).

                If the application only uses CMSIS libraries for interrupt

                configuration then the correct setting can be achieved on all Cortex-M

                devices by calling NVIC_SetPriorityGrouping( 0 ); before starting the

                scheduler.  Note however that some vendor specific peripheral libraries

                assume a non-zero priority group setting, in which cases using a value

                of zero will result in unpredictable behaviour. */

                configASSERT( ( portAIRCR_REG & portPRIORITY_GROUP_MASK ) <= ulMaxPRIGROUPValue );

        }