diff options
| -rw-r--r-- | stmhal/irq.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/stmhal/irq.h b/stmhal/irq.h index 429e6faa12..7ebf70e108 100644 --- a/stmhal/irq.h +++ b/stmhal/irq.h @@ -64,9 +64,14 @@ MP_DECLARE_CONST_FUN_OBJ(pyb_enable_irq_obj); //#def IRQ_PRI_SYSTICK 0 //#def IRQ_SUBPRI_SYSTICK 0 +// The UARTs have no FIFOs, so if they don't get serviced quickly then characters +// get dropped. The handling for each character only consumes about 0.5 usec +#define IRQ_PRI_UART 1 +#define IRQ_SUBPRI_UART 0 + // Flash IRQ must be higher priority than interrupts of all those components // that rely on the flash storage. -#define IRQ_PRI_FLASH 1 +#define IRQ_PRI_FLASH 2 #define IRQ_SUBPRI_FLASH 0 // SDIO must be higher priority than DMA for SDIO DMA transfers to work. @@ -93,9 +98,6 @@ MP_DECLARE_CONST_FUN_OBJ(pyb_enable_irq_obj); #define IRQ_PRI_CAN 7 #define IRQ_SUBPRI_CAN 0 -#define IRQ_PRI_UART 13 -#define IRQ_SUBPRI_UART 0 - // Interrupt priority for non-special timers. #define IRQ_PRI_TIMX 14 #define IRQ_SUBPRI_TIMX 0 |