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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_Atmel/TARGET_SAM21/TARGET_SAMD21J18A/TOOLCHAIN_GCC_ARM/startup_samd21.c@579:53297373a894, 2015-07-01 (annotated)

Committer:
mbed_official
Date:
Wed Jul 01 09:45:11 2015 +0100
Revision:
579:53297373a894
Child:
592:a274ee790e56
Synchronized with git revision d5b4d2ab9c47edb4dc5776e7177b0c2263459081



Full URL: https://github.com/mbedmicro/mbed/commit/d5b4d2ab9c47edb4dc5776e7177b0c2263459081/



Initial version of drivers for SAMR21

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 579:53297373a894 1 /**
mbed_official 579:53297373a894 2 * \file
mbed_official 579:53297373a894 3 *
mbed_official 579:53297373a894 4 * \brief gcc starttup file for SAMD21
mbed_official 579:53297373a894 5 *
mbed_official 579:53297373a894 6 * Copyright (c) 2013-2014 Atmel Corporation. All rights reserved.
mbed_official 579:53297373a894 7 *
mbed_official 579:53297373a894 8 * \asf_license_start
mbed_official 579:53297373a894 9 *
mbed_official 579:53297373a894 10 * \page License
mbed_official 579:53297373a894 11 *
mbed_official 579:53297373a894 12 * Redistribution and use in source and binary forms, with or without
mbed_official 579:53297373a894 13 * modification, are permitted provided that the following conditions are met:
mbed_official 579:53297373a894 14 *
mbed_official 579:53297373a894 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 579:53297373a894 16 * this list of conditions and the following disclaimer.
mbed_official 579:53297373a894 17 *
mbed_official 579:53297373a894 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 579:53297373a894 19 * this list of conditions and the following disclaimer in the documentation
mbed_official 579:53297373a894 20 * and/or other materials provided with the distribution.
mbed_official 579:53297373a894 21 *
mbed_official 579:53297373a894 22 * 3. The name of Atmel may not be used to endorse or promote products derived
mbed_official 579:53297373a894 23 * from this software without specific prior written permission.
mbed_official 579:53297373a894 24 *
mbed_official 579:53297373a894 25 * 4. This software may only be redistributed and used in connection with an
mbed_official 579:53297373a894 26 * Atmel microcontroller product.
mbed_official 579:53297373a894 27 *
mbed_official 579:53297373a894 28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
mbed_official 579:53297373a894 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 579:53297373a894 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
mbed_official 579:53297373a894 31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
mbed_official 579:53297373a894 32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 579:53297373a894 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
mbed_official 579:53297373a894 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
mbed_official 579:53297373a894 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
mbed_official 579:53297373a894 36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
mbed_official 579:53297373a894 37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 579:53297373a894 38 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 579:53297373a894 39 *
mbed_official 579:53297373a894 40 * \asf_license_stop
mbed_official 579:53297373a894 41 *
mbed_official 579:53297373a894 42 */
mbed_official 579:53297373a894 43
mbed_official 579:53297373a894 44 #include "samd21j18a.h"
mbed_official 579:53297373a894 45
mbed_official 579:53297373a894 46 /* Initialize segments */
mbed_official 579:53297373a894 47 extern uint32_t _sfixed;
mbed_official 579:53297373a894 48 extern uint32_t _efixed;
mbed_official 579:53297373a894 49 extern uint32_t _etext;
mbed_official 579:53297373a894 50 extern uint32_t _srelocate;
mbed_official 579:53297373a894 51 extern uint32_t _erelocate;
mbed_official 579:53297373a894 52 extern uint32_t _szero;
mbed_official 579:53297373a894 53 extern uint32_t _ezero;
mbed_official 579:53297373a894 54 extern uint32_t _sstack;
mbed_official 579:53297373a894 55 extern uint32_t _estack;
mbed_official 579:53297373a894 56
mbed_official 579:53297373a894 57 /** \cond DOXYGEN_SHOULD_SKIP_THIS */
mbed_official 579:53297373a894 58 int main(void);
mbed_official 579:53297373a894 59 /** \endcond */
mbed_official 579:53297373a894 60
mbed_official 579:53297373a894 61 void __libc_init_array(void);
mbed_official 579:53297373a894 62
mbed_official 579:53297373a894 63 /* Default empty handler */
mbed_official 579:53297373a894 64 void Dummy_Handler(void);
mbed_official 579:53297373a894 65
mbed_official 579:53297373a894 66 /* Cortex-M0+ core handlers */
mbed_official 579:53297373a894 67 void NMI_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 68 void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 69 void SVC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 70 void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 71 void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 72
mbed_official 579:53297373a894 73 /* Peripherals handlers */
mbed_official 579:53297373a894 74 void PM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 75 void SYSCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 76 void WDT_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 77 void RTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 78 void EIC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 79 void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 80 void DMAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 81 void USB_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 82 void EVSYS_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 83 void SERCOM0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 84 void SERCOM1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 85 void SERCOM2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 86 void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 87 void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 88 void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 89 void TCC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 90 void TCC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 91 void TCC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 92 void TC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 93 void TC4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 94 void TC5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 95 void TC6_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 96 void TC7_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 97 void ADC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 98 void AC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 99 void DAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 100 void PTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 101 void I2S_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
mbed_official 579:53297373a894 102
mbed_official 579:53297373a894 103 /* Exception Table */
mbed_official 579:53297373a894 104 __attribute__ ((section(".vectors")))
mbed_official 579:53297373a894 105 const DeviceVectors exception_table = {
mbed_official 579:53297373a894 106
mbed_official 579:53297373a894 107 /* Configure Initial Stack Pointer, using linker-generated symbols */
mbed_official 579:53297373a894 108 (void*) (&_estack),
mbed_official 579:53297373a894 109
mbed_official 579:53297373a894 110 (void*) Reset_Handler,
mbed_official 579:53297373a894 111 (void*) NMI_Handler,
mbed_official 579:53297373a894 112 (void*) HardFault_Handler,
mbed_official 579:53297373a894 113 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 114 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 115 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 116 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 117 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 118 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 119 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 120 (void*) SVC_Handler,
mbed_official 579:53297373a894 121 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 122 (void*) (0UL), /* Reserved */
mbed_official 579:53297373a894 123 (void*) PendSV_Handler,
mbed_official 579:53297373a894 124 (void*) SysTick_Handler,
mbed_official 579:53297373a894 125
mbed_official 579:53297373a894 126 /* Configurable interrupts */
mbed_official 579:53297373a894 127 (void*) PM_Handler, /* 0 Power Manager */
mbed_official 579:53297373a894 128 (void*) SYSCTRL_Handler, /* 1 System Control */
mbed_official 579:53297373a894 129 (void*) WDT_Handler, /* 2 Watchdog Timer */
mbed_official 579:53297373a894 130 (void*) RTC_Handler, /* 3 Real-Time Counter */
mbed_official 579:53297373a894 131 (void*) EIC_Handler, /* 4 External Interrupt Controller */
mbed_official 579:53297373a894 132 (void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */
mbed_official 579:53297373a894 133 (void*) DMAC_Handler, /* 6 Direct Memory Access Controller */
mbed_official 579:53297373a894 134 (void*) USB_Handler, /* 7 Universal Serial Bus */
mbed_official 579:53297373a894 135 (void*) EVSYS_Handler, /* 8 Event System Interface */
mbed_official 579:53297373a894 136 (void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
mbed_official 579:53297373a894 137 (void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
mbed_official 579:53297373a894 138 (void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
mbed_official 579:53297373a894 139 (void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
mbed_official 579:53297373a894 140 (void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
mbed_official 579:53297373a894 141 (void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
mbed_official 579:53297373a894 142 (void*) TCC0_Handler, /* 15 Timer Counter Control 0 */
mbed_official 579:53297373a894 143 (void*) TCC1_Handler, /* 16 Timer Counter Control 1 */
mbed_official 579:53297373a894 144 (void*) TCC2_Handler, /* 17 Timer Counter Control 2 */
mbed_official 579:53297373a894 145 (void*) TC3_Handler, /* 18 Basic Timer Counter 0 */
mbed_official 579:53297373a894 146 (void*) TC4_Handler, /* 19 Basic Timer Counter 1 */
mbed_official 579:53297373a894 147 (void*) TC5_Handler, /* 20 Basic Timer Counter 2 */
mbed_official 579:53297373a894 148 (void*) TC6_Handler, /* 21 Basic Timer Counter 3 */
mbed_official 579:53297373a894 149 (void*) TC7_Handler, /* 22 Basic Timer Counter 4 */
mbed_official 579:53297373a894 150 (void*) ADC_Handler, /* 23 Analog Digital Converter */
mbed_official 579:53297373a894 151 (void*) AC_Handler, /* 24 Analog Comparators */
mbed_official 579:53297373a894 152 (void*) DAC_Handler, /* 25 Digital Analog Converter */
mbed_official 579:53297373a894 153 (void*) PTC_Handler, /* 26 Peripheral Touch Controller */
mbed_official 579:53297373a894 154 (void*) I2S_Handler /* 27 Inter-IC Sound Interface */
mbed_official 579:53297373a894 155 };
mbed_official 579:53297373a894 156
mbed_official 579:53297373a894 157 /**
mbed_official 579:53297373a894 158 * \brief This is the code that gets called on processor reset.
mbed_official 579:53297373a894 159 * To initialize the device, and call the main() routine.
mbed_official 579:53297373a894 160 */
mbed_official 579:53297373a894 161 void Reset_Handler(void)
mbed_official 579:53297373a894 162 {
mbed_official 579:53297373a894 163 uint32_t *pSrc, *pDest;
mbed_official 579:53297373a894 164
mbed_official 579:53297373a894 165 /* Initialize the relocate segment */
mbed_official 579:53297373a894 166 pSrc = &_etext;
mbed_official 579:53297373a894 167 pDest = &_srelocate;
mbed_official 579:53297373a894 168
mbed_official 579:53297373a894 169 if (pSrc != pDest) {
mbed_official 579:53297373a894 170 for (; pDest < &_erelocate;) {
mbed_official 579:53297373a894 171 *pDest++ = *pSrc++;
mbed_official 579:53297373a894 172 }
mbed_official 579:53297373a894 173 }
mbed_official 579:53297373a894 174
mbed_official 579:53297373a894 175 /* Clear the zero segment */
mbed_official 579:53297373a894 176 for (pDest = &_szero; pDest < &_ezero;) {
mbed_official 579:53297373a894 177 *pDest++ = 0;
mbed_official 579:53297373a894 178 }
mbed_official 579:53297373a894 179
mbed_official 579:53297373a894 180 /* Set the vector table base address */
mbed_official 579:53297373a894 181 pSrc = (uint32_t *) & _sfixed;
mbed_official 579:53297373a894 182 SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk);
mbed_official 579:53297373a894 183
mbed_official 579:53297373a894 184 /* Initialize the C library */
mbed_official 579:53297373a894 185 __libc_init_array();
mbed_official 579:53297373a894 186
mbed_official 579:53297373a894 187 /* Branch to main function */ // expected to be done by MBED OS
mbed_official 579:53297373a894 188 main();
mbed_official 579:53297373a894 189
mbed_official 579:53297373a894 190 /* Infinite loop */
mbed_official 579:53297373a894 191 while (1);
mbed_official 579:53297373a894 192 }
mbed_official 579:53297373a894 193
mbed_official 579:53297373a894 194 /**
mbed_official 579:53297373a894 195 * \brief Default interrupt handler for unused IRQs.
mbed_official 579:53297373a894 196 */
mbed_official 579:53297373a894 197 void Dummy_Handler(void)
mbed_official 579:53297373a894 198 {
mbed_official 579:53297373a894 199 while (1) {
mbed_official 579:53297373a894 200 }
mbed_official 579:53297373a894 201 }