LPC4357 NVIC

[hbxiao168]

register AIRCR Interrupt priority group default configuration，

NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0,1,0));

NVIC_SetPriority(TIMER0_IRQn, NVIC_EncodePriority(0,2,0));

but I try to use this function  

NVIC_GetPriority(TIMER0_IRQn))；//  return  0

NVIC_GetPriority(TIMER1_IRQn);   //  return  0

why ?  

Ths！

[Alice_Yang]

Hello @hbxiao168 

I tested with lpc4337(the same with lpc4357), use below code, it can works well:

BR

Alice

[hbxiao168]

Thanks  @Alice_Yang

I will  try，and i want know   __NVIC_PRIO_BITS = ？in you code？

#define __NVIC_PRIO_BITS   7 /*!< Number of Bits used for Priority Levels */

[hbxiao168]

how to set the __NVIC_PRIO_BITS?
the register AIRCR Interrupt priority group default configuration, and __NVIC_PRIO_BITS = 7 ?

[Alice_Yang]

Hello @hbxiao168 

You can directly write the Interrupt priority. 

If you want to use "NVIC_EncodePriority()", you need refer to the function code and ARM manual to check how to use it.

BR

Alice