What is the default PriorityGroup setting if I didn't call NVIC_SetPriorityGrouping or NVIC_PriorityGroupConfig

[zjuniverse]

Posted on September 13, 2014 at 22:14

I'v found in the Cortex-M4 file that the default value of PRIGROUP is 0. while the legal value of STM32 is from 3 to 7. And I didn't find the PRIGROUP set in startup file or system_stm32f4xx.c. What is the default priority group setting if I didn't call NVIC_SetPriorityGrouping or NVIC_PriorityGroupConfig?