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279 lines
12 KiB
C
279 lines
12 KiB
C
5 years ago
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/**
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* \file
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*
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* \brief gcc startup file for SAMD21
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*
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* Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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#include "samd21.h"
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/* Initialize segments */
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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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/** \cond DOXYGEN_SHOULD_SKIP_THIS */
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int main(void);
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/** \endcond */
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void __libc_init_array(void);
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/* Default empty handler */
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void Dummy_Handler(void);
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/* Cortex-M0+ core handlers */
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void NMI_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SVC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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/* Peripherals handlers */
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void PM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SYSCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void WDT_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void RTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void EIC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void DMAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#ifdef ID_USB
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void USB_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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void EVSYS_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SERCOM0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SERCOM1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SERCOM2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#ifdef ID_SERCOM4
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void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_SERCOM5
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void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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void TCC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void TCC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void TCC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void TC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void TC4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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void TC5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#ifdef ID_TC6
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void TC6_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_TC7
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void TC7_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_ADC
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void ADC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_AC
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void AC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_DAC
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void DAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_PTC
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void PTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_I2S
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void I2S_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_AC1
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void AC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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#ifdef ID_TCC3
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void TCC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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#endif
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/* Exception Table */
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__attribute__ ((section(".vectors")))
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const DeviceVectors exception_table = {
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/* Configure Initial Stack Pointer, using linker-generated symbols */
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.pvStack = (void*) (&_estack),
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.pfnReset_Handler = (void*) Reset_Handler,
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.pfnNMI_Handler = (void*) NMI_Handler,
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.pfnHardFault_Handler = (void*) HardFault_Handler,
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.pvReservedM12 = (void*) (0UL), /* Reserved */
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.pvReservedM11 = (void*) (0UL), /* Reserved */
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.pvReservedM10 = (void*) (0UL), /* Reserved */
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.pvReservedM9 = (void*) (0UL), /* Reserved */
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.pvReservedM8 = (void*) (0UL), /* Reserved */
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.pvReservedM7 = (void*) (0UL), /* Reserved */
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.pvReservedM6 = (void*) (0UL), /* Reserved */
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.pfnSVC_Handler = (void*) SVC_Handler,
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.pvReservedM4 = (void*) (0UL), /* Reserved */
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.pvReservedM3 = (void*) (0UL), /* Reserved */
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.pfnPendSV_Handler = (void*) PendSV_Handler,
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.pfnSysTick_Handler = (void*) SysTick_Handler,
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/* Configurable interrupts */
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.pfnPM_Handler = (void*) PM_Handler, /* 0 Power Manager */
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.pfnSYSCTRL_Handler = (void*) SYSCTRL_Handler, /* 1 System Control */
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.pfnWDT_Handler = (void*) WDT_Handler, /* 2 Watchdog Timer */
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.pfnRTC_Handler = (void*) RTC_Handler, /* 3 Real-Time Counter */
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.pfnEIC_Handler = (void*) EIC_Handler, /* 4 External Interrupt Controller */
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.pfnNVMCTRL_Handler = (void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */
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.pfnDMAC_Handler = (void*) DMAC_Handler, /* 6 Direct Memory Access Controller */
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#ifdef ID_USB
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.pfnUSB_Handler = (void*) USB_Handler, /* 7 Universal Serial Bus */
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#else
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.pvReserved7 = (void*) (0UL), /* 7 Reserved */
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#endif
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.pfnEVSYS_Handler = (void*) EVSYS_Handler, /* 8 Event System Interface */
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.pfnSERCOM0_Handler = (void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
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.pfnSERCOM1_Handler = (void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
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.pfnSERCOM2_Handler = (void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
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.pfnSERCOM3_Handler = (void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
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#ifdef ID_SERCOM4
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.pfnSERCOM4_Handler = (void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
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#else
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.pvReserved13 = (void*) (0UL), /* 13 Reserved */
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#endif
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#ifdef ID_SERCOM5
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.pfnSERCOM5_Handler = (void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
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#else
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.pvReserved14 = (void*) (0UL), /* 14 Reserved */
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#endif
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.pfnTCC0_Handler = (void*) TCC0_Handler, /* 15 Timer Counter Control 0 */
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.pfnTCC1_Handler = (void*) TCC1_Handler, /* 16 Timer Counter Control 1 */
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.pfnTCC2_Handler = (void*) TCC2_Handler, /* 17 Timer Counter Control 2 */
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.pfnTC3_Handler = (void*) TC3_Handler, /* 18 Basic Timer Counter 0 */
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.pfnTC4_Handler = (void*) TC4_Handler, /* 19 Basic Timer Counter 1 */
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.pfnTC5_Handler = (void*) TC5_Handler, /* 20 Basic Timer Counter 2 */
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#ifdef ID_TC6
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.pfnTC6_Handler = (void*) TC6_Handler, /* 21 Basic Timer Counter 3 */
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#else
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.pvReserved21 = (void*) (0UL), /* 21 Reserved */
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#endif
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#ifdef ID_TC7
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.pfnTC7_Handler = (void*) TC7_Handler, /* 22 Basic Timer Counter 4 */
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#else
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.pvReserved22 = (void*) (0UL), /* 22 Reserved */
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#endif
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#ifdef ID_ADC
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.pfnADC_Handler = (void*) ADC_Handler, /* 23 Analog Digital Converter */
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#else
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.pvReserved23 = (void*) (0UL), /* 23 Reserved */
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#endif
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#ifdef ID_AC
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.pfnAC_Handler = (void*) AC_Handler, /* 24 Analog Comparators 0 */
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#else
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.pvReserved24 = (void*) (0UL), /* 24 Reserved */
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#endif
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#ifdef ID_DAC
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.pfnDAC_Handler = (void*) DAC_Handler, /* 25 Digital Analog Converter */
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#else
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.pvReserved25 = (void*) (0UL), /* 25 Reserved */
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#endif
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#ifdef ID_PTC
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.pfnPTC_Handler = (void*) PTC_Handler, /* 26 Peripheral Touch Controller */
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#else
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.pvReserved26 = (void*) (0UL), /* 26 Reserved */
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#endif
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#ifdef ID_I2S
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.pfnI2S_Handler = (void*) I2S_Handler, /* 27 Inter-IC Sound Interface */
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#else
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.pvReserved27 = (void*) (0UL), /* 27 Reserved */
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#endif
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#ifdef ID_AC1
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.pfnAC1_Handler = (void*) AC1_Handler, /* 28 Analog Comparators 1 */
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#else
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.pvReserved28 = (void*) (0UL), /* 28 Reserved */
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#endif
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#ifdef ID_TCC3
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.pfnTCC3_Handler = (void*) TCC3_Handler /* 29 Timer Counter Control 3 */
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#endif
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};
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5 years ago
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/**
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* \brief This is the code that gets called on processor reset.
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* To initialize the device, and call the main() routine.
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*/
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5 years ago
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void Reset_Handler(void)
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{
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uint32_t *pSrc, *pDest;
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/* Initialize the relocate segment */
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pSrc = &_etext;
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pDest = &_srelocate;
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if (pSrc != pDest) {
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for (; pDest < &_erelocate;) {
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*pDest++ = *pSrc++;
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}
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}
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/* Clear the zero segment */
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for (pDest = &_szero; pDest < &_ezero;) {
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*pDest++ = 0;
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}
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/* Set the vector table base address */
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pSrc = (uint32_t *) & _sfixed;
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SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk);
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/* Change default QOS values to have the best performance and correct USB behaviour */
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SBMATRIX->SFR[SBMATRIX_SLAVE_HMCRAMC0].reg = 2;
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#if defined(ID_USB)
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USB->DEVICE.QOSCTRL.bit.CQOS = 2;
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USB->DEVICE.QOSCTRL.bit.DQOS = 2;
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#endif
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DMAC->QOSCTRL.bit.DQOS = 2;
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DMAC->QOSCTRL.bit.FQOS = 2;
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DMAC->QOSCTRL.bit.WRBQOS = 2;
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/* Overwriting the default value of the NVMCTRL.CTRLB.MANW bit (errata reference 13134) */
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NVMCTRL->CTRLB.bit.MANW = 1;
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/* Initialize the C library */
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__libc_init_array();
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/* Branch to main function */
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main();
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/* Infinite loop */
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while (1);
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}
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5 years ago
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/**
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* \brief Default interrupt handler for unused IRQs.
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*/
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void Dummy_Handler(void)
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5 years ago
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{
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5 years ago
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while (1) {
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}
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5 years ago
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}
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