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stm429 uart1 interrupt priority in FreeRTOS?

Question asked by mei.raymond on Dec 8, 2014
Latest reply on Dec 9, 2014 by www.FreeRTOS.org
I use 429 UART1 with FreeRTOS. UART1 make an interrupt and 429 enter into ISR.
But it hang in the FreeRTOS code line:
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
which is in function vPortValidateInterruptPriority( void );

ucCurrentPriority = 0x00, and ucMaxSysCallPriority = 0x50. 
ucCurrentPriority  is current UART1 interrupt priority and get from NVIC 0xE000E3F0.

What is the priority of uart1? How can I get it? Thank you.

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