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/*
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* Copyright (C) 2014 Freie Universität Berlin |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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/**
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* @ingroup cpu_sam3 |
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* @{ |
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* |
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* @file |
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* @brief Startup code and interrupt vector definition |
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* |
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de> |
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* |
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* @} |
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*/ |
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#include <stdint.h> |
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#include "panic.h" |
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/**
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* memory markers as defined in the linker script |
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*/ |
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extern uint32_t _sfixed; |
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extern uint32_t _efixed; |
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extern uint32_t _etext; |
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extern uint32_t _srelocate; |
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extern uint32_t _erelocate; |
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extern uint32_t _szero; |
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extern uint32_t _ezero; |
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extern uint32_t _sstack; |
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extern uint32_t _estack; |
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/**
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* @brief functions for initializing the board, std-lib and kernel |
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*/ |
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extern void board_init(void); |
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extern void kernel_init(void); |
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extern void __libc_init_array(void); |
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/**
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* @brief This function is the entry point after a system reset |
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* |
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* After a system reset, the following steps are necessary and carried out: |
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* 1. load data section from flash to ram |
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* 2. overwrite uninitialized data section (BSS) with zeros |
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* 3. initialize the newlib |
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* 4. initialize the board (sync clock, setup std-IO) |
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* 5. initialize and start RIOTs kernel |
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*/ |
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void reset_handler(void) |
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{ |
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uint32_t *dst; |
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uint32_t *src = &_etext; |
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/* load data section from flash to ram */ |
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for (dst = &_srelocate; dst < &_erelocate; ) { |
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*(dst++) = *(src++); |
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} |
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/* default bss section to zero */ |
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for (dst = &_szero; dst < &_ezero; ) { |
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*(dst++) = 0; |
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} |
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/* initialize the board and startup the kernel */ |
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board_init(); |
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/* initialize std-c library (this should be done after board_init) */ |
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__libc_init_array(); |
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/* startup the kernel */ |
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kernel_init(); |
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} |
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/**
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* @brief Default handler is called in case no interrupt handler was defined |
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*/ |
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void dummy_handler(void) |
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{ |
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core_panic(PANIC_DUMMY_HANDLER, "DUMMY HANDLER"); |
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} |
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void isr_nmi(void) |
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{ |
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while (1) {asm ("nop");} |
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} |
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void isr_mem_manage(void) |
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{ |
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while (1) {asm ("nop");} |
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} |
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void isr_debug_mon(void) |
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{ |
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while (1) {asm ("nop");} |
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} |
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void isr_hard_fault(void) |
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{ |
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core_panic(PANIC_HARD_FAULT, "HARD FAULT"); |
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} |
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void isr_bus_fault(void) |
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{ |
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core_panic(PANIC_BUS_FAULT, "BUS FAULT"); |
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} |
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void isr_usage_fault(void) |
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{ |
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core_panic(PANIC_USAGE_FAULT, "USAGE FAULT"); |
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} |
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/* Cortex-M specific interrupt vectors */ |
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void isr_svc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_pendsv(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_systick(void) __attribute__ ((weak, alias("dummy_handler"))); |
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/* SAM3X8E specific interrupt vector */ |
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void isr_supc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_rstc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_rtc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_rtt(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_wdt(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_pmc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_efc0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_efc1(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_uart(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_smc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_pioa(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_piob(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_pioc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_piod(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_usart0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_usart1(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_usart2(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_usart3(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_hsmci(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_twi0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_twi1(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_spi0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_ssc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc1(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc2(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc3(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc4(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc5(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc6(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc7(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_tc8(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_pwm(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_adc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_dacc(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_dmac(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_uotghs(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_trng(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_emac(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_can0(void) __attribute__ ((weak, alias("dummy_handler"))); |
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void isr_can1(void) __attribute__ ((weak, alias("dummy_handler"))); |
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/* interrupt vector table */ |
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__attribute__ ((section(".vectors"))) |
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const void *interrupt_vector[] = { |
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/* Stack pointer */ |
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(void*) (&_estack), /* pointer to the top of the empty stack */ |
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/* Cortex-M handlers */ |
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(void*) reset_handler, /* entry point of the program */ |
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(void*) isr_nmi, /* non maskable interrupt handler */ |
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(void*) isr_hard_fault, /* if you end up here its not good */ |
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(void*) isr_mem_manage, /* memory controller interrupt */ |
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(void*) isr_bus_fault, /* also not good to end up here */ |
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(void*) isr_usage_fault, /* autsch */ |
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(void*) (0UL), /* Reserved */ |
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(void*) (0UL), /* Reserved */ |
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(void*) (0UL), /* Reserved */ |
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(void*) (0UL), /* Reserved */ |
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(void*) isr_svc, /* system call interrupt */ |
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(void*) isr_debug_mon, /* debug interrupt */ |
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(void*) (0UL), /* Reserved */ |
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(void*) isr_pendsv, /* pendSV interrupt, used for task switching in RIOT */ |
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(void*) isr_systick, /* SysTick interrupt, not used in RIOT */ |
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/* SAM3X8E specific peripheral handlers */ |
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(void*) isr_supc, /* 0 supply controller */ |
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(void*) isr_rstc, /* 1 reset controller */ |
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(void*) isr_rtc, /* 2 real time clock */ |
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(void*) isr_rtt, /* 3 real timer timer */ |
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(void*) isr_wdt, /* 4 watchdog timer */ |
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(void*) isr_pmc, /* 5 power management controller */ |
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(void*) isr_efc0, /* 6 enhanced flash controller 0 */ |
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(void*) isr_efc1, /* 7 enhanced flash controller 1 */ |
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(void*) isr_uart, /* 8 universal asynchronous receiver transceiver */ |
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(void*) isr_smc, /* 9 static memory controller */ |
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(void*) (0UL), |
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(void*) isr_pioa, /* 11 GPIO port A */ |
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(void*) isr_piob, /* 12 GPIO port B */ |
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(void*) isr_pioc, /* 13 GPIO port C */ |
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(void*) isr_piod, /* 14 GPIO port D */ |
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(void*) (0UL), |
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(void*) (0UL), |
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(void*) isr_usart0, /* 17 USART0 */ |
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(void*) isr_usart1, /* 18 USART1 */ |
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(void*) isr_usart2, /* 19 USART2 */ |
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(void*) isr_usart3, /* 20 USART3 */ |
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(void*) isr_hsmci, /* 21 multimedia card interface */ |
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(void*) isr_twi0, /* 22 two-wire interface 0 */ |
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(void*) isr_twi1, /* 23 two-wire interface 1 */ |
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(void*) isr_spi0, /* 24 serial peripheral interface */ |
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(void*) (0UL), |
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(void*) isr_ssc, /* 26 synchronous serial controller */ |
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(void*) isr_tc0, /* 27 timer counter 0 */ |
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(void*) isr_tc1, /* 28 timer counter 1 */ |
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(void*) isr_tc2, /* 29 timer counter 2 */ |
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(void*) isr_tc3, /* 30 timer counter 3 */ |
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(void*) isr_tc4, /* 31 timer counter 4 */ |
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(void*) isr_tc5, /* 32 timer counter 5 */ |
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(void*) isr_tc6, /* 33 timer counter 6 */ |
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(void*) isr_tc7, /* 34 timer counter 7 */ |
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(void*) isr_tc8, /* 35 timer counter 8 */ |
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(void*) isr_pwm, /* 36 pulse width modulation controller */ |
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(void*) isr_adc, /* 37 ADC controller */ |
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(void*) isr_dacc, /* 38 DAC controller */ |
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(void*) isr_dmac, /* 39 DMA controller */ |
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(void*) isr_uotghs, /* 40 USB OTG high speed */ |
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(void*) isr_trng, /* 41 true random number generator */ |
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(void*) isr_emac, /* 42 Ethernet MAC*/ |
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(void*) isr_can0, /* 43 CAN controller 0*/ |
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(void*) isr_can1, /* 44 CAN controller 1*/ |
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}; |
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