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Diffstat (limited to 'Sensor Watch Starter Project/startup_saml22.c')
| -rwxr-xr-x | Sensor Watch Starter Project/startup_saml22.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/Sensor Watch Starter Project/startup_saml22.c b/Sensor Watch Starter Project/startup_saml22.c new file mode 100755 index 00000000..3941456b --- /dev/null +++ b/Sensor Watch Starter Project/startup_saml22.c @@ -0,0 +1,163 @@ +/* + * Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 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. + * + * 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 +}; + +//----------------------------------------------------------------------------- +void irq_handler_reset(void) +{ + unsigned int *src, *dst; + + src = &_etext; + dst = &_data; + while (dst < &_edata) + *dst++ = *src++; + + dst = &_bss; + while (dst < &_ebss) + *dst++ = 0; + + SCB->VTOR = (uint32_t)vectors; + + main(); + + while (1); +} + +//----------------------------------------------------------------------------- +void irq_handler_dummy(void) +{ + while (1); +} + +//----------------------------------------------------------------------------- +void _exit(int status) +{ + (void)status; + while (1); +} |