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Diffstat (limited to 'Sensor Watch Starter Project/startup_saml22.c')
| -rwxr-xr-x | Sensor Watch Starter Project/startup_saml22.c | 343 |
1 files changed, 206 insertions, 137 deletions
diff --git a/Sensor Watch Starter Project/startup_saml22.c b/Sensor Watch Starter Project/startup_saml22.c index 4414b383..f4982564 100755 --- a/Sensor Watch Starter Project/startup_saml22.c +++ b/Sensor Watch Starter Project/startup_saml22.c @@ -1,156 +1,225 @@ -/* - * Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com> - * All rights reserved. +/** + * \file * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: + * \brief gcc starttup file for SAML22 * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. + * Copyright (c) 2018 Microchip Technology Inc. + * + * \asf_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 Licence 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. + * + * \asf_license_stop * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. */ -//----------------------------------------------------------------------------- #include "saml22.h" -//----------------------------------------------------------------------------- -#define DUMMY __attribute__ ((weak, alias ("irq_handler_dummy"))) - -//----------------------------------------------------------------------------- -void irq_handler_reset(void); -DUMMY void irq_handler_nmi(void); -DUMMY void irq_handler_hard_fault(void); -DUMMY void irq_handler_sv_call(void); -DUMMY void irq_handler_pend_sv(void); -DUMMY void irq_handler_sys_tick(void); - -DUMMY void irq_handler_system(void); -DUMMY void irq_handler_wdt(void); -DUMMY void irq_handler_rtc(void); -DUMMY void irq_handler_eic(void); -DUMMY void irq_handler_freqm(void); -DUMMY void irq_handler_usb(void); -DUMMY void irq_handler_nvmctrl(void); -DUMMY void irq_handler_dmac(void); -DUMMY void irq_handler_evsys(void); -DUMMY void irq_handler_sercom0(void); -DUMMY void irq_handler_sercom1(void); -DUMMY void irq_handler_sercom2(void); -DUMMY void irq_handler_sercom3(void); -DUMMY void irq_handler_sercom4(void); -DUMMY void irq_handler_sercom5(void); -DUMMY void irq_handler_tcc0(void); -DUMMY void irq_handler_tc0(void); -DUMMY void irq_handler_tc1(void); -DUMMY void irq_handler_tc2(void); -DUMMY void irq_handler_tc3(void); -DUMMY void irq_handler_adc(void); -DUMMY void irq_handler_ac(void); -DUMMY void irq_handler_ptc(void); -DUMMY void irq_handler_slcd(void); -DUMMY void irq_handler_aes(void); -DUMMY void irq_handler_trng(void); - -extern int main(void); - -extern void _stack_top(void); -extern unsigned int _etext; -extern unsigned int _data; -extern unsigned int _edata; -extern unsigned int _bss; -extern unsigned int _ebss; - -//----------------------------------------------------------------------------- -__attribute__ ((used, section(".vectors"))) -void (* const vectors[])(void) = -{ - &_stack_top, // 0 - Initial Stack Pointer Value - - // Cortex-M0+ handlers - irq_handler_reset, // 1 - Reset - irq_handler_nmi, // 2 - NMI - irq_handler_hard_fault, // 3 - Hard Fault - 0, // 4 - Reserved - 0, // 5 - Reserved - 0, // 6 - Reserved - 0, // 7 - Reserved - 0, // 8 - Reserved - 0, // 9 - Reserved - 0, // 10 - Reserved - irq_handler_sv_call, // 11 - SVCall - 0, // 12 - Reserved - 0, // 13 - Reserved - irq_handler_pend_sv, // 14 - PendSV - irq_handler_sys_tick, // 15 - SysTick - - // Peripheral handlers - irq_handler_system, // 0 - System Controller - irq_handler_wdt, // 1 - Watchdog Timer - irq_handler_rtc, // 2 - Real-Time Counter - irq_handler_eic, // 3 - External Interrupt Controller - irq_handler_freqm, // 4 - External Interrupt Controller - irq_handler_usb, // 5 - Universal Serial Bus Controller - irq_handler_nvmctrl, // 6 - Non-Volatile Memory Controller - irq_handler_dmac, // 7 - Direct Memory Access Controller - irq_handler_evsys, // 8 - Event System - irq_handler_sercom0, // 9 - Serial Communication Interface 0 - irq_handler_sercom1, // 10 - Serial Communication Interface 1 - irq_handler_sercom2, // 11 - Serial Communication Interface 2 - irq_handler_sercom3, // 12 - Serial Communication Interface 3 - irq_handler_sercom4, // 13 - Serial Communication Interface 4 - irq_handler_sercom5, // 14 - Serial Communication Interface 5 - irq_handler_tcc0, // 15 - Timer/Counter for Control 0 - irq_handler_tc0, // 16 - Timer/Counter 0 - irq_handler_tc1, // 17 - Timer/Counter 1 - irq_handler_tc2, // 18 - Timer/Counter 2 - irq_handler_tc3, // 19 - Timer/Counter 3 - irq_handler_adc, // 20 - Analog-to-Digital Converter - irq_handler_ac, // 21 - Analog Comparator - irq_handler_ptc, // 22 - Peripheral Touch Controller - irq_handler_slcd, // 23 - Segment Liquid Crystal Display Controller - irq_handler_aes, // 24 - Advanced Encryption Standard - irq_handler_trng, // 25 - True Random Number Generator +/* 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); + +/* Default empty handler */ +void Dummy_Handler(void); + +/* Cortex-M0+ 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 SYSTEM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); /* MCLK, OSC32KCTRL, OSCCTRL, PAC, PM, SUPC, TAL */ +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 FREQM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#ifdef ID_USB +void USB_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +void DMAC_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"))); +#ifdef ID_SERCOM3 +void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +#ifdef ID_SERCOM4 +void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +#ifdef ID_SERCOM5 +void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +void TCC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +void TC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +void TC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +void TC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +void TC3_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"))); +#ifdef ID_PTC +void PTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +void SLCD_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#ifdef ID_AES +void AES_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif +#ifdef ID_TRNG +void TRNG_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); +#endif + +/* 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, + .pvReservedM12 = (void*) (0UL), /* Reserved */ + .pvReservedM11 = (void*) (0UL), /* Reserved */ + .pvReservedM10 = (void*) (0UL), /* Reserved */ + .pvReservedM9 = (void*) (0UL), /* Reserved */ + .pvReservedM8 = (void*) (0UL), /* Reserved */ + .pvReservedM7 = (void*) (0UL), /* Reserved */ + .pvReservedM6 = (void*) (0UL), /* Reserved */ + .pfnSVCall_Handler = (void*) SVCall_Handler, + .pvReservedM4 = (void*) (0UL), /* Reserved */ + .pvReservedM3 = (void*) (0UL), /* Reserved */ + .pfnPendSV_Handler = (void*) PendSV_Handler, + .pfnSysTick_Handler = (void*) SysTick_Handler, + + /* Configurable interrupts */ + .pfnSYSTEM_Handler = (void*) SYSTEM_Handler, /* 0 Main Clock, 32k Oscillators Control, Oscillators Control, Peripheral Access Controller, Power Manager, Supply Controller, Trigger Allocator */ + .pfnWDT_Handler = (void*) WDT_Handler, /* 1 Watchdog Timer */ + .pfnRTC_Handler = (void*) RTC_Handler, /* 2 Real-Time Counter */ + .pfnEIC_Handler = (void*) EIC_Handler, /* 3 External Interrupt Controller */ + .pfnFREQM_Handler = (void*) FREQM_Handler, /* 4 Frequency Meter */ +#ifdef ID_USB + .pfnUSB_Handler = (void*) USB_Handler, /* 5 Universal Serial Bus */ +#else + .pvReserved5 = (void*) (0UL), /* 5 Reserved */ +#endif + .pfnNVMCTRL_Handler = (void*) NVMCTRL_Handler, /* 6 Non-Volatile Memory Controller */ + .pfnDMAC_Handler = (void*) DMAC_Handler, /* 7 Direct Memory Access Controller */ + .pfnEVSYS_Handler = (void*) EVSYS_Handler, /* 8 Event System Interface */ + .pfnSERCOM0_Handler = (void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */ + .pfnSERCOM1_Handler = (void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */ + .pfnSERCOM2_Handler = (void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */ +#ifdef ID_SERCOM3 + .pfnSERCOM3_Handler = (void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */ +#else + .pvReserved12 = (void*) (0UL), /* 12 Reserved */ +#endif +#ifdef ID_SERCOM4 + .pfnSERCOM4_Handler = (void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */ +#else + .pvReserved13 = (void*) (0UL), /* 13 Reserved */ +#endif +#ifdef ID_SERCOM5 + .pfnSERCOM5_Handler = (void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */ +#else + .pvReserved14 = (void*) (0UL), /* 14 Reserved */ +#endif + .pfnTCC0_Handler = (void*) TCC0_Handler, /* 15 Timer Counter Control */ + .pfnTC0_Handler = (void*) TC0_Handler, /* 16 Basic Timer Counter 0 */ + .pfnTC1_Handler = (void*) TC1_Handler, /* 17 Basic Timer Counter 1 */ + .pfnTC2_Handler = (void*) TC2_Handler, /* 18 Basic Timer Counter 2 */ + .pfnTC3_Handler = (void*) TC3_Handler, /* 19 Basic Timer Counter 3 */ + .pfnADC_Handler = (void*) ADC_Handler, /* 20 Analog Digital Converter */ + .pfnAC_Handler = (void*) AC_Handler, /* 21 Analog Comparators */ +#ifdef ID_PTC + .pfnPTC_Handler = (void*) PTC_Handler, /* 22 Peripheral Touch Controller */ +#else + .pvReserved22 = (void*) (0UL), /* 22 Reserved */ +#endif + .pfnSLCD_Handler = (void*) SLCD_Handler, /* 23 Segment Liquid Crystal Display Controller */ +#ifdef ID_AES + .pfnAES_Handler = (void*) AES_Handler, /* 24 Advanced Encryption Standard */ +#else + .pvReserved24 = (void*) (0UL), /* 24 Reserved */ +#endif +#ifdef ID_TRNG + .pfnTRNG_Handler = (void*) TRNG_Handler /* 25 True Random Generator */ +#else + .pvReserved25 = (void*) (0UL) /* 25 Reserved */ +#endif }; -//----------------------------------------------------------------------------- -void irq_handler_reset(void) +/** + * \brief This is the code that gets called on processor reset. + * To initialize the device, and call the main() routine. + */ +void Reset_Handler(void) { - unsigned int *src, *dst; + uint32_t *pSrc, *pDest; + + /* Initialize the relocate segment */ + pSrc = &_etext; + pDest = &_srelocate; - src = &_etext; - dst = &_data; - while (dst < &_edata) - *dst++ = *src++; + if (pSrc != pDest) { + for (; pDest < &_erelocate;) { + *pDest++ = *pSrc++; + } + } - dst = &_bss; - while (dst < &_ebss) - *dst++ = 0; + /* Clear the zero segment */ + for (pDest = &_szero; pDest < &_ezero;) { + *pDest++ = 0; + } - SCB->VTOR = (uint32_t)vectors; + /* Set the vector table base address */ + pSrc = (uint32_t *) & _sfixed; + SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk); - main(); + /* Initialize the C library */ + __libc_init_array(); - while (1); + /* Branch to main function */ + main(); + + /* Infinite loop */ + while (1); } -//----------------------------------------------------------------------------- -void irq_handler_dummy(void) +/** + * \brief Default interrupt handler for unused IRQs. + */ +void Dummy_Handler(void) { - while (1); + while (1) { + } } |