-#define INT_SUPC 0 ///< Supply Controller (SUPC)
-#define INT_RSTC 1 ///< Reset Controller (RSTC)
-#define INT_RTC 2 ///< Real Time Clock (RTC)
-#define INT_RTT 3 ///< Real Time Timer (RTT)
-#define INT_WDT 4 ///< Watchdog Timer (WDT)
-#define INT_PMC 5 ///< Power Management Controller (PMC)
-#define INT_EFC 6 ///< Enhanced Flash Controller (EFC)
-#define INT_UART0 8 ///< UART 0 (UART0)
-#define INT_UART1 9 ///< UART 1 (UART1)
-#define INT_PIOA 11 ///< Parallel I/O Controller A (PIOA)
-#define INT_PIOB 12 ///< Parallel I/O Controller B (PIOB)
-#define INT_PIOC 13 ///< Parallel I/O Controller C (PIOC)
-#define INT_USART0 14 ///< USART 0 (USART0)
-#define INT_USART1 15 ///< USART 1 (USART1)
-#define INT_TWI0 19 ///< Two Wire Interface 0 (TWI0)
-#define INT_TWI1 20 ///< Two Wire Interface 1 (TWI1)
-#define INT_SPI 21 ///< Serial Peripheral Interface (SPI)
-#define INT_TC0 23 ///< Timer/Counter 0 (TC0)
-#define INT_TC1 24 ///< Timer/Counter 1 (TC1)
-#define INT_TC2 25 ///< Timer/Counter 2 (TC2)
-#define INT_TC3 26 ///< Timer/Counter 3 (TC3)
-#define INT_TC4 27 ///< Timer/Counter 4 (TC4)
-#define INT_TC5 28 ///< Timer/Counter 5 (TC5)
-#define INT_ADC 29 ///< Analog To Digital Converter (ADC)
-#define INT_DACC 30 ///< Digital To Analog Converter (DACC)
-#define INT_PWM 31 ///< Pulse Width Modulation (PWM)
+#define INT_PERIPH_BASE 16
+
+#define INT_SUPC (INT_PERIPH_BASE + SUPC_ID) ///< Supply Controller (SUPC)
+#define INT_RSTC (INT_PERIPH_BASE + RSTC_ID) ///< Reset Controller (RSTC)
+#define INT_RTC (INT_PERIPH_BASE + RTC_ID) ///< Real Time Clock (RTC)
+#define INT_RTT (INT_PERIPH_BASE + RTT_ID) ///< Real Time Timer (RTT)
+#define INT_WDT (INT_PERIPH_BASE + WDT_ID) ///< Watchdog Timer (WDT)
+#define INT_PMC (INT_PERIPH_BASE + PMC_ID) ///< Power Management Controller (PMC)
+#define INT_EFC (INT_PERIPH_BASE + EFC_ID) ///< Enhanced Flash Controller (EFC)
+#define INT_UART0 (INT_PERIPH_BASE + UART0_ID) ///< UART 0 (UART0)
+#define INT_UART1 (INT_PERIPH_BASE + UART1_ID) ///< UART 1 (UART1)
+#define INT_PIOA (INT_PERIPH_BASE + PIOA_ID) ///< Parallel I/O Controller A (PIOA)
+#define INT_PIOB (INT_PERIPH_BASE + PIOB_ID) ///< Parallel I/O Controller B (PIOB)
+#define INT_PIOC (INT_PERIPH_BASE + PIOC_ID) ///< Parallel I/O Controller C (PIOC)
+#define INT_US0 (INT_PERIPH_BASE + US0_ID) ///< USART 0 (USART0)
+#define INT_US1 (INT_PERIPH_BASE + US1_ID) ///< USART 1 (USART1)
+#define INT_TWI0 (INT_PERIPH_BASE + TWI0_ID) ///< Two Wire Interface 0 (TWI0)
+#define INT_TWI1 (INT_PERIPH_BASE + TWI1_ID) ///< Two Wire Interface 1 (TWI1)
+#define INT_SPI0 (INT_PERIPH_BASE + SPI0_ID) ///< Serial Peripheral Interface (SPI)
+#define INT_TC0 (INT_PERIPH_BASE + TC0_ID) ///< Timer/Counter 0 (TC0)
+#define INT_TC1 (INT_PERIPH_BASE + TC1_ID) ///< Timer/Counter 1 (TC1)
+#define INT_TC2 (INT_PERIPH_BASE + TC2_ID) ///< Timer/Counter 2 (TC2)
+#define INT_TC3 (INT_PERIPH_BASE + TC3_ID) ///< Timer/Counter 3 (TC3)
+#define INT_TC4 (INT_PERIPH_BASE + TC4_ID) ///< Timer/Counter 4 (TC4)
+#define INT_TC5 (INT_PERIPH_BASE + TC5_ID) ///< Timer/Counter 5 (TC5)
+#define INT_ADC (INT_PERIPH_BASE + ADC_ID) ///< Analog To Digital Converter (ADC)
+#define INT_DACC (INT_PERIPH_BASE + DACC_ID) ///< Digital To Analog Converter (DACC)
+#define INT_PWM (INT_PERIPH_BASE + PWM_ID) ///< Pulse Width Modulation (PWM)