-#if AO_APB2_PRESCALER == 1
-#define AO_TIM91011_CLK AO_PCLK2
-#else
-#define AO_TIM91011_CLK (2 * AO_PCLK2)
-#endif
-
-#define AO_STM_NVIC_HIGH_PRIORITY 4
-#define AO_STM_NVIC_CLOCK_PRIORITY 6
-#define AO_STM_NVIC_MED_PRIORITY 8
-#define AO_STM_NVIC_LOW_PRIORITY 10
+#define AO_STM_NVIC_HIGH_PRIORITY (0 << 6)
+#define AO_STM_NVIC_CLOCK_PRIORITY (1 << 6)
+#define AO_STM_NVIC_MED_PRIORITY (2 << 6)
+#define AO_STM_NVIC_LOW_PRIORITY (3 << 6)