/** * \file * * \brief GCC startup file for ATSAMD21E16A * * Copyright (c) 2020 Microchip Technology Inc. * * \license_start * * \page License * * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * \license_stop * */ #include "samd21e16a.h" /* Initialize segments */ extern uint32_t _sfixed; extern uint32_t _efixed; extern uint32_t _etext; extern uint32_t _srelocate; extern uint32_t _erelocate; extern uint32_t _szero; extern uint32_t _ezero; extern uint32_t _sstack; extern uint32_t _estack; /** \cond DOXYGEN_SHOULD_SKIP_THIS */ int main(void); /** \endcond */ void __libc_init_array(void); /* Reset handler */ void Reset_Handler(void); /* Default empty handler */ void Dummy_Handler(void); /* Cortex-M0PLUS core handlers */ void NonMaskableInt_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); void SVCall_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); /* 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, alias("Dummy_Handler"))); 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 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, 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"))); /* Exception Table */ __attribute__ ((section(".vectors"))) const DeviceVectors exception_table = { /* Configure Initial Stack Pointer, using linker-generated symbols */ .pvStack = (void*) (&_estack), .pfnReset_Handler = (void*) Reset_Handler, .pfnNonMaskableInt_Handler = (void*) NonMaskableInt_Handler, .pfnHardFault_Handler = (void*) HardFault_Handler, .pvReservedC12 = (void*) (0UL), /* Reserved */ .pvReservedC11 = (void*) (0UL), /* Reserved */ .pvReservedC10 = (void*) (0UL), /* Reserved */ .pvReservedC9 = (void*) (0UL), /* Reserved */ .pvReservedC8 = (void*) (0UL), /* Reserved */ .pvReservedC7 = (void*) (0UL), /* Reserved */ .pvReservedC6 = (void*) (0UL), /* Reserved */ .pfnSVCall_Handler = (void*) SVCall_Handler, .pvReservedC4 = (void*) (0UL), /* Reserved */ .pvReservedC3 = (void*) (0UL), /* Reserved */ .pfnPendSV_Handler = (void*) PendSV_Handler, .pfnSysTick_Handler = (void*) SysTick_Handler, /* Configurable interrupts */ .pfnPM_Handler = (void*) PM_Handler, /* 0 Power Manager */ .pfnSYSCTRL_Handler = (void*) SYSCTRL_Handler, /* 1 System Control */ .pfnWDT_Handler = (void*) WDT_Handler, /* 2 Watchdog Timer */ .pfnRTC_Handler = (void*) RTC_Handler, /* 3 Real-Time Counter */ .pfnEIC_Handler = (void*) EIC_Handler, /* 4 External Interrupt Controller */ .pfnNVMCTRL_Handler = (void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */ .pfnDMAC_Handler = (void*) DMAC_Handler, /* 6 Direct Memory Access Controller */ .pfnUSB_Handler = (void*) USB_Handler, /* 7 Universal Serial Bus */ .pfnEVSYS_Handler = (void*) EVSYS_Handler, /* 8 Event System Interface */ .pfnSERCOM0_Handler = (void*) SERCOM0_Handler, /* 9 Serial Communication Interface */ .pfnSERCOM1_Handler = (void*) SERCOM1_Handler, /* 10 Serial Communication Interface */ .pfnSERCOM2_Handler = (void*) SERCOM2_Handler, /* 11 Serial Communication Interface */ .pfnSERCOM3_Handler = (void*) SERCOM3_Handler, /* 12 Serial Communication Interface */ .pvReserved13 = (void*) (0UL), /* 13 Reserved */ .pvReserved14 = (void*) (0UL), /* 14 Reserved */ .pfnTCC0_Handler = (void*) TCC0_Handler, /* 15 Timer Counter Control */ .pfnTCC1_Handler = (void*) TCC1_Handler, /* 16 Timer Counter Control */ .pfnTCC2_Handler = (void*) TCC2_Handler, /* 17 Timer Counter Control */ .pfnTC3_Handler = (void*) TC3_Handler, /* 18 Basic Timer Counter */ .pfnTC4_Handler = (void*) TC4_Handler, /* 19 Basic Timer Counter */ .pfnTC5_Handler = (void*) TC5_Handler, /* 20 Basic Timer Counter */ .pvReserved21 = (void*) (0UL), /* 21 Reserved */ .pvReserved22 = (void*) (0UL), /* 22 Reserved */ .pfnADC_Handler = (void*) ADC_Handler, /* 23 Analog Digital Converter */ .pfnAC_Handler = (void*) AC_Handler, /* 24 Analog Comparators */ .pfnDAC_Handler = (void*) DAC_Handler, /* 25 Digital Analog Converter */ .pfnPTC_Handler = (void*) PTC_Handler, /* 26 Peripheral Touch Controller */ .pfnI2S_Handler = (void*) I2S_Handler /* 27 Inter-IC Sound Interface */ }; /** * \brief This is the code that gets called on processor reset. * To initialize the device, and call the main() routine. */ void Reset_Handler(void) { uint32_t *pSrc, *pDest; /* Initialize the relocate segment */ pSrc = &_etext; pDest = &_srelocate; if (pSrc != pDest) { for (; pDest < &_erelocate;) { *pDest++ = *pSrc++; } } /* Clear the zero segment */ for (pDest = &_szero; pDest < &_ezero;) { *pDest++ = 0; } /* Set the vector table base address */ pSrc = (uint32_t *) & _sfixed; SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk); /* Initialize the C library */ __libc_init_array(); /* Branch to main function */ main(); /* Infinite loop */ while (1); } /** * \brief Default interrupt handler for unused IRQs. */ void Dummy_Handler(void) { while (1) { } }