Sergey Solodunov / mbed-dev

mbed library sources. Supersedes mbed-src.

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targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/sercom/sercom_interrupt.c@144:423e1876dc07, 2016-08-02 (annotated)

Committer:
screamer
Date:
Tue Aug 02 14:07:36 2016 +0000
Revision:
144:423e1876dc07
Parent:
15:a81a8d6c1dfe 
Added targets.json file for the supported targets in the release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:a81a8d6c1dfe 1 /**
mbed_official 15:a81a8d6c1dfe 2 * \file
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * \brief SAM Serial Peripheral Interface Driver
mbed_official 15:a81a8d6c1dfe 5 *
mbed_official 15:a81a8d6c1dfe 6 * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved.
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * \asf_license_start
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * \page License
mbed_official 15:a81a8d6c1dfe 11 *
mbed_official 15:a81a8d6c1dfe 12 * Redistribution and use in source and binary forms, with or without
mbed_official 15:a81a8d6c1dfe 13 * modification, are permitted provided that the following conditions are met:
mbed_official 15:a81a8d6c1dfe 14 *
mbed_official 15:a81a8d6c1dfe 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 15:a81a8d6c1dfe 16 * this list of conditions and the following disclaimer.
mbed_official 15:a81a8d6c1dfe 17 *
mbed_official 15:a81a8d6c1dfe 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 15:a81a8d6c1dfe 19 * this list of conditions and the following disclaimer in the documentation
mbed_official 15:a81a8d6c1dfe 20 * and/or other materials provided with the distribution.
mbed_official 15:a81a8d6c1dfe 21 *
mbed_official 15:a81a8d6c1dfe 22 * 3. The name of Atmel may not be used to endorse or promote products derived
mbed_official 15:a81a8d6c1dfe 23 * from this software without specific prior written permission.
mbed_official 15:a81a8d6c1dfe 24 *
mbed_official 15:a81a8d6c1dfe 25 * 4. This software may only be redistributed and used in connection with an
mbed_official 15:a81a8d6c1dfe 26 * Atmel microcontroller product.
mbed_official 15:a81a8d6c1dfe 27 *
mbed_official 15:a81a8d6c1dfe 28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
mbed_official 15:a81a8d6c1dfe 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 15:a81a8d6c1dfe 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
mbed_official 15:a81a8d6c1dfe 31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
mbed_official 15:a81a8d6c1dfe 32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 15:a81a8d6c1dfe 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
mbed_official 15:a81a8d6c1dfe 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
mbed_official 15:a81a8d6c1dfe 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
mbed_official 15:a81a8d6c1dfe 36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
mbed_official 15:a81a8d6c1dfe 37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 15:a81a8d6c1dfe 38 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 15:a81a8d6c1dfe 39 *
mbed_official 15:a81a8d6c1dfe 40 * \asf_license_stop
mbed_official 15:a81a8d6c1dfe 41 *
mbed_official 15:a81a8d6c1dfe 42 */
mbed_official 15:a81a8d6c1dfe 43 /*
mbed_official 15:a81a8d6c1dfe 44 * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
mbed_official 15:a81a8d6c1dfe 45 */
mbed_official 15:a81a8d6c1dfe 46 #include "sercom_interrupt.h"
mbed_official 15:a81a8d6c1dfe 47
mbed_official 15:a81a8d6c1dfe 48 void *_sercom_instances[SERCOM_INST_NUM];
mbed_official 15:a81a8d6c1dfe 49
mbed_official 15:a81a8d6c1dfe 50 /** Save status of initialized handlers. */
mbed_official 15:a81a8d6c1dfe 51 static bool _handler_table_initialized = false;
mbed_official 15:a81a8d6c1dfe 52
mbed_official 15:a81a8d6c1dfe 53 /** Void pointers for saving device instance structures. */
mbed_official 15:a81a8d6c1dfe 54 static void (*_sercom_interrupt_handlers[SERCOM_INST_NUM])(const uint8_t instance);
mbed_official 15:a81a8d6c1dfe 55
mbed_official 15:a81a8d6c1dfe 56 /**
mbed_official 15:a81a8d6c1dfe 57 * \internal
mbed_official 15:a81a8d6c1dfe 58 * Default interrupt handler.
mbed_official 15:a81a8d6c1dfe 59 *
mbed_official 15:a81a8d6c1dfe 60 * \param[in] instance SERCOM instance used.
mbed_official 15:a81a8d6c1dfe 61 */
mbed_official 15:a81a8d6c1dfe 62 static void _sercom_default_handler(
mbed_official 15:a81a8d6c1dfe 63 const uint8_t instance)
mbed_official 15:a81a8d6c1dfe 64 {
mbed_official 15:a81a8d6c1dfe 65 Assert(false);
mbed_official 15:a81a8d6c1dfe 66 }
mbed_official 15:a81a8d6c1dfe 67
mbed_official 15:a81a8d6c1dfe 68 /**
mbed_official 15:a81a8d6c1dfe 69 * \internal
mbed_official 15:a81a8d6c1dfe 70 * Saves the given callback handler.
mbed_official 15:a81a8d6c1dfe 71 *
mbed_official 15:a81a8d6c1dfe 72 * \param[in] instance Instance index.
mbed_official 15:a81a8d6c1dfe 73 * \param[in] interrupt_handler Pointer to instance callback handler.
mbed_official 15:a81a8d6c1dfe 74 */
mbed_official 15:a81a8d6c1dfe 75 void _sercom_set_handler(
mbed_official 15:a81a8d6c1dfe 76 const uint8_t instance,
mbed_official 15:a81a8d6c1dfe 77 const sercom_handler_t interrupt_handler)
mbed_official 15:a81a8d6c1dfe 78 {
mbed_official 15:a81a8d6c1dfe 79 /* Initialize handlers with default handler and device instances with 0. */
mbed_official 15:a81a8d6c1dfe 80 if (_handler_table_initialized == false) {
mbed_official 15:a81a8d6c1dfe 81 for (uint32_t i = 0; i < SERCOM_INST_NUM; i++) {
mbed_official 15:a81a8d6c1dfe 82 _sercom_interrupt_handlers[i] = &_sercom_default_handler;
mbed_official 15:a81a8d6c1dfe 83 _sercom_instances[i] = NULL;
mbed_official 15:a81a8d6c1dfe 84 }
mbed_official 15:a81a8d6c1dfe 85
mbed_official 15:a81a8d6c1dfe 86 _handler_table_initialized = true;
mbed_official 15:a81a8d6c1dfe 87 }
mbed_official 15:a81a8d6c1dfe 88
mbed_official 15:a81a8d6c1dfe 89 /* Save interrupt handler. */
mbed_official 15:a81a8d6c1dfe 90 _sercom_interrupt_handlers[instance] = interrupt_handler;
mbed_official 15:a81a8d6c1dfe 91 }
mbed_official 15:a81a8d6c1dfe 92
mbed_official 15:a81a8d6c1dfe 93
mbed_official 15:a81a8d6c1dfe 94 /** \internal
mbed_official 15:a81a8d6c1dfe 95 * Converts a given SERCOM index to its interrupt vector index.
mbed_official 15:a81a8d6c1dfe 96 */
mbed_official 15:a81a8d6c1dfe 97 #define _SERCOM_INTERRUPT_VECT_NUM(n, unused) \
mbed_official 15:a81a8d6c1dfe 98 SYSTEM_INTERRUPT_MODULE_SERCOM##n,
mbed_official 15:a81a8d6c1dfe 99
mbed_official 15:a81a8d6c1dfe 100 /** \internal
mbed_official 15:a81a8d6c1dfe 101 * Generates a SERCOM interrupt handler function for a given SERCOM index.
mbed_official 15:a81a8d6c1dfe 102 */
mbed_official 15:a81a8d6c1dfe 103 #define _SERCOM_INTERRUPT_HANDLER(n, unused) \
mbed_official 15:a81a8d6c1dfe 104 void SERCOM##n##_Handler(void) \
mbed_official 15:a81a8d6c1dfe 105 { \
mbed_official 15:a81a8d6c1dfe 106 _sercom_interrupt_handlers[n](n); \
mbed_official 15:a81a8d6c1dfe 107 }
mbed_official 15:a81a8d6c1dfe 108
mbed_official 15:a81a8d6c1dfe 109 /**
mbed_official 15:a81a8d6c1dfe 110 * \internal
mbed_official 15:a81a8d6c1dfe 111 * Returns the system interrupt vector.
mbed_official 15:a81a8d6c1dfe 112 *
mbed_official 15:a81a8d6c1dfe 113 * \param[in] sercom_instance Instance pointer
mbed_official 15:a81a8d6c1dfe 114 *
mbed_official 15:a81a8d6c1dfe 115 * \return Enum of system interrupt vector
mbed_official 15:a81a8d6c1dfe 116 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM0
mbed_official 15:a81a8d6c1dfe 117 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM1
mbed_official 15:a81a8d6c1dfe 118 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM2
mbed_official 15:a81a8d6c1dfe 119 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM3
mbed_official 15:a81a8d6c1dfe 120 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM4
mbed_official 15:a81a8d6c1dfe 121 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM5
mbed_official 15:a81a8d6c1dfe 122 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM6
mbed_official 15:a81a8d6c1dfe 123 * \retval SYSTEM_INTERRUPT_MODULE_SERCOM7
mbed_official 15:a81a8d6c1dfe 124 */
mbed_official 15:a81a8d6c1dfe 125 enum system_interrupt_vector _sercom_get_interrupt_vector(
mbed_official 15:a81a8d6c1dfe 126 Sercom *const sercom_instance)
mbed_official 15:a81a8d6c1dfe 127 {
mbed_official 15:a81a8d6c1dfe 128 const uint8_t sercom_int_vectors[SERCOM_INST_NUM] = {
mbed_official 15:a81a8d6c1dfe 129 MREPEAT(SERCOM_INST_NUM, _SERCOM_INTERRUPT_VECT_NUM, ~)
mbed_official 15:a81a8d6c1dfe 130 };
mbed_official 15:a81a8d6c1dfe 131
mbed_official 15:a81a8d6c1dfe 132 /* Retrieve the index of the SERCOM being requested */
mbed_official 15:a81a8d6c1dfe 133 uint8_t instance_index = _sercom_get_sercom_inst_index(sercom_instance);
mbed_official 15:a81a8d6c1dfe 134
mbed_official 15:a81a8d6c1dfe 135 /* Get the vector number from the lookup table for the requested SERCOM */
mbed_official 15:a81a8d6c1dfe 136 return (enum system_interrupt_vector)sercom_int_vectors[instance_index];
mbed_official 15:a81a8d6c1dfe 137 }
mbed_official 15:a81a8d6c1dfe 138
mbed_official 15:a81a8d6c1dfe 139 /** Auto-generate a set of interrupt handlers for each SERCOM in the device */
mbed_official 15:a81a8d6c1dfe 140 MREPEAT(SERCOM_INST_NUM, _SERCOM_INTERRUPT_HANDLER, ~)