Diff: targets/cmsis/TARGET_Atmel/TARGET_SAM21/TARGET_SAMR21G18A/TOOLCHAIN_GCC_ARM/startup_samr21.c

Revision:

579:53297373a894

Child:

592:a274ee790e56

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_Atmel/TARGET_SAM21/TARGET_SAMR21G18A/TOOLCHAIN_GCC_ARM/startup_samr21.c	Wed Jul 01 09:45:11 2015 +0100
@@ -0,0 +1,258 @@
+/**
+ * \file
+ *
+ * \brief gcc starttup file for SAMR21
+ *
+ * Copyright (c) 2014 Atmel Corporation. All rights reserved.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * 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 Atmel may not be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 4. This software may only be redistributed and used in connection with an
+ *    Atmel microcontroller product.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
+ *
+ * \asf_license_stop
+ *
+ */
+/**
+* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+*/
+
+#include "samr21g18a.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);
+
+/* Default empty handler */
+void Dummy_Handler(void);
+
+/* Cortex-M0+ core handlers */
+void NMI_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+void HardFault_Handler       ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+void SVC_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")));
+#ifdef USB_IRQn
+void USB_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+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")));
+#ifdef SERCOM4_IRQn
+void SERCOM4_Handler         ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef SERCOM5_IRQn
+void SERCOM5_Handler         ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+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")));
+#ifdef TC6_IRQn
+void TC6_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef TC7_IRQn
+void TC7_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef ADC_IRQn
+void ADC_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef AC_IRQn
+void AC_Handler              ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef DAC_IRQn
+void DAC_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+#ifdef PTC_IRQn
+void PTC_Handler             ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
+#endif
+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 */
+    (void*) (&_estack),
+
+    (void*) Reset_Handler,
+    (void*) NMI_Handler,
+    (void*) HardFault_Handler,
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) SVC_Handler,
+    (void*) (0UL), /* Reserved */
+    (void*) (0UL), /* Reserved */
+    (void*) PendSV_Handler,
+    (void*) SysTick_Handler,
+
+    /* Configurable interrupts */
+    (void*) PM_Handler,             /*  0 Power Manager */
+    (void*) SYSCTRL_Handler,        /*  1 System Control */
+    (void*) WDT_Handler,            /*  2 Watchdog Timer */
+    (void*) RTC_Handler,            /*  3 Real-Time Counter */
+    (void*) EIC_Handler,            /*  4 External Interrupt Controller */
+    (void*) NVMCTRL_Handler,        /*  5 Non-Volatile Memory Controller */
+    (void*) DMAC_Handler,           /*  6 Direct Memory Access Controller */
+#ifdef USB_IRQn
+    (void*) USB_Handler,            /*  7 Universal Serial Bus */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+    (void*) EVSYS_Handler,          /*  8 Event System Interface */
+    (void*) SERCOM0_Handler,        /*  9 Serial Communication Interface 0 */
+    (void*) SERCOM1_Handler,        /* 10 Serial Communication Interface 1 */
+    (void*) SERCOM2_Handler,        /* 11 Serial Communication Interface 2 */
+    (void*) SERCOM3_Handler,        /* 12 Serial Communication Interface 3 */
+#ifdef SERCOM4_IRQn
+    (void*) SERCOM4_Handler,        /* 13 Serial Communication Interface 4 */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef SERCOM5_IRQn
+    (void*) SERCOM5_Handler,        /* 14 Serial Communication Interface 5 */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+    (void*) TCC0_Handler,           /* 15 Timer Counter Control 0 */
+    (void*) TCC1_Handler,           /* 16 Timer Counter Control 1 */
+    (void*) TCC2_Handler,           /* 17 Timer Counter Control 2 */
+    (void*) TC3_Handler,            /* 18 Basic Timer Counter 0 */
+    (void*) TC4_Handler,            /* 19 Basic Timer Counter 1 */
+    (void*) TC5_Handler,            /* 20 Basic Timer Counter 2 */
+#ifdef TC6_IRQn
+    (void*) TC6_Handler,            /* 21 Basic Timer Counter 3 */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef TC7_IRQn
+    (void*) TC7_Handler,            /* 22 Basic Timer Counter 4 */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef ADC_IRQn
+    (void*) ADC_Handler,            /* 23 Analog Digital Converter */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef AC_IRQn
+    (void*) AC_Handler,             /* 24 Analog Comparators */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef DAC_IRQn
+    (void*) DAC_Handler,            /* 25 Digital Analog Converter */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+#ifdef PTC_IRQn
+    (void*) PTC_Handler,            /* 26 Peripheral Touch Controller */
+#else
+    (void*) (0UL), /* Reserved */
+#endif
+    (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) {
+    }
+}