Annex EVK1.4 MCU Priority List

Taking as an example the EVK1.4 hardware which uses an STM32G4 MCU, the interrupt priorities are defined as shown below.

/* Priorities */
#define PRIO_MULTI_RADIO_TIMER_IRQ 0
#define PRIO_APP_TIMER_IRQ         1
#define PRIO_AUDIO_SAI_DMA_TX_IRQ  1
#define PRIO_AUDIO_SAI_DMA_RX_IRQ  1
#define PRIO_SYSTICK_IRQ           1
#define PRIO_RADIO_IRQ             2
#define PRIO_RADIO_DMA_RX_CPLT     2
#define PRIO_RADIO_DMA_TX_CPLT     2
#define PRIO_USB_LP_IRQ            8
#define PRIO_LPUART_IRQ            14
#define PRIO_LPUART_DMA_TX_CPLT    14
#define PRIO_LPUART_DMA_RX_CPLT    14
#define PRIO_USB_DET_IRQ           14

In this case, the value range is 0-15. A lower number indicates a higher priority. Although, since users need to provide their own BSP implementation, they will need to define their own priorities naming and values according to the chosen platform.