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cortex_handlers.c
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/*
Copyright (c) 2015 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <samd.h>
#include <variant.h>
#include <stdio.h>
/* libc */
void __libc_init_array(void);
/* RTOS Hooks */
extern void svcHook(void);
extern void pendSVHook(void);
extern int sysTickHook(void);
/* Default empty handler */
void Dummy_Handler(void)
{
#if defined DEBUG
__BKPT(3);
#endif
for (;;) { }
}
/* Cortex-M0+ core handlers */
void HardFault_Handler(void) __attribute__ ((weak, alias("Dummy_Handler")));
void Reset_Handler (void);
void NMI_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SVC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void PendSV_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SysTick_Handler (void);
/* Peripherals handlers */
void PM_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SYSCTRL_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void WDT_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void RTC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void EIC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void NVMCTRL_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void DMAC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void USB_Handler (void) __attribute__ ((weak));
void EVSYS_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM0_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM1_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM2_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM3_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM4_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM5_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TCC0_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TCC1_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TCC2_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TC3_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TC4_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TC5_Handler (void) __attribute__ ((weak)); // Used in Tone.cpp
void TC6_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void TC7_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void ADC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void AC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void DAC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void PTC_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
void I2S_Handler (void) __attribute__ ((weak, alias("Dummy_Handler")));
/* Initialize segments */
extern uint32_t __etext;
extern uint32_t __data_start__;
extern uint32_t __data_end__;
extern uint32_t __bss_start__;
extern uint32_t __bss_end__;
extern uint32_t __StackTop;
/* Exception Table */
__attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
{
/* Configure Initial Stack Pointer, using linker-generated symbols */
(void*) (&__StackTop),
(void*) Reset_Handler,
(void*) NMI_Handler,
(void*) HardFault_Handler,
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) SVC_Handler,
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) PendSV_Handler,
(void*) SysTick_Handler,
/* Configurable interrupts */
(void*) PM_Handler, /* 0 Power Manager */
(void*) SYSCTRL_Handler, /* 1 System Control */
(void*) WDT_Handler, /* 2 Watchdog Timer */
(void*) RTC_Handler, /* 3 Real-Time Counter */
(void*) EIC_Handler, /* 4 External Interrupt Controller */
(void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */
(void*) DMAC_Handler, /* 6 Direct Memory Access Controller */
(void*) USB_Handler, /* 7 Universal Serial Bus */
(void*) EVSYS_Handler, /* 8 Event System Interface */
(void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
(void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
(void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
(void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
(void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
(void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
(void*) TCC0_Handler, /* 15 Timer Counter Control 0 */
(void*) TCC1_Handler, /* 16 Timer Counter Control 1 */
(void*) TCC2_Handler, /* 17 Timer Counter Control 2 */
(void*) TC3_Handler, /* 18 Basic Timer Counter 0 */
(void*) TC4_Handler, /* 19 Basic Timer Counter 1 */
(void*) TC5_Handler, /* 20 Basic Timer Counter 2 */
(void*) TC6_Handler, /* 21 Basic Timer Counter 3 */
(void*) TC7_Handler, /* 22 Basic Timer Counter 4 */
(void*) ADC_Handler, /* 23 Analog Digital Converter */
(void*) AC_Handler, /* 24 Analog Comparators */
(void*) DAC_Handler, /* 25 Digital Analog Converter */
(void*) PTC_Handler, /* 26 Peripheral Touch Controller */
(void*) I2S_Handler, /* 27 Inter-IC Sound Interface */
(void*) (0UL), /* Reserved */
};
extern int main(void);
/* This is called on processor reset to initialize the device and call main() */
void Reset_Handler(void)
{
uint32_t *pSrc, *pDest;
/* Initialize the initialized data section */
pSrc = &__etext;
pDest = &__data_start__;
if ((&__data_start__ != &__data_end__) && (pSrc != pDest)) {
for (; pDest < &__data_end__; pDest += sizeof(uint32_t), pSrc += sizeof(uint32_t))
*pDest = *pSrc;
}
/* Clear the zero section */
if ((&__bss_start__ != &__bss_end__)) {
for (pDest = &__bss_start__; pDest < &__bss_end__; pDest += sizeof(uint32_t))
*pDest = 0;
}
/* Initialize C library */
__libc_init_array();
SystemInit();
main();
while (1)
;
}
/* Default Arduino systick handler */
extern void SysTick_DefaultHandler(void);
void SysTick_Handler(void)
{
if (sysTickHook())
return;
SysTick_DefaultHandler();
}
static void (*usb_isr)(void) = NULL;
void USB_Handler(void)
{
if (usb_isr)
usb_isr();
}
void USB_SetHandler(void (*new_usb_isr)(void))
{
usb_isr = new_usb_isr;
}