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Diffstat (limited to 'atmel-samd/asf4/samd51/hal/utils/src/utils_event.c')
| -rw-r--r-- | atmel-samd/asf4/samd51/hal/utils/src/utils_event.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/atmel-samd/asf4/samd51/hal/utils/src/utils_event.c b/atmel-samd/asf4/samd51/hal/utils/src/utils_event.c deleted file mode 100644 index ab4e9eb3f..000000000 --- a/atmel-samd/asf4/samd51/hal/utils/src/utils_event.c +++ /dev/null @@ -1,135 +0,0 @@ -/** - * \file - * - * \brief Events implementation. - * - * Copyright (C) 2015 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 CAUSEsD 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 - * - */ - -#include <utils_event.h> -#include <utils_assert.h> -#include <string.h> - -#define EVENT_WORD_BITS (sizeof(event_word_t) * 8) - -static struct list_descriptor events; -static uint8_t subscribed[EVENT_MASK_SIZE]; - -int32_t event_subscribe(struct event *const event, const event_id_t id, event_cb_t cb) -{ - /* get byte and bit number of the given event in the event mask */ - const uint8_t position = id >> 3; - const uint8_t mask = 1 << (id & 0x7); - - ASSERT(event && cb && (id < EVENT_MAX_AMOUNT)); - - if (event->mask[position] & mask) { - return ERR_NO_CHANGE; /* Already subscribed */ - } - - if (!is_list_element(&events, event)) { - memset(event->mask, 0, EVENT_MASK_SIZE); - list_insert_as_head(&events, event); - } - event->cb = cb; - event->mask[position] |= mask; - - subscribed[position] |= mask; - - return ERR_NONE; -} - -int32_t event_unsubscribe(struct event *const event, const event_id_t id) -{ - /* get byte and bit number of the given event in the event mask */ - const uint8_t position = id >> 3; - const uint8_t mask = 1 << (id & 0x7); - const struct event *current; - uint8_t i; - - ASSERT(event && (id < EVENT_MAX_AMOUNT)); - - if (!(event->mask[position] & mask)) { - return ERR_NO_CHANGE; /* Already unsubscribed */ - } - - event->mask[position] &= ~mask; - - /* Check if there are more subscribers */ - for ((current = (const struct event *)list_get_head(&events)); current; - current = (const struct event *)list_get_next_element(current)) { - if (current->mask[position] & mask) { - break; - } - } - if (!current) { - subscribed[position] &= ~mask; - } - - /* Remove event from the list. Can be unsave, document it! */ - for (i = 0; i < ARRAY_SIZE(event->mask); i++) { - if (event->mask[i]) { - return ERR_NONE; - } - } - list_delete_element(&events, event); - - return ERR_NONE; -} - -void event_post(const event_id_t id, const event_data_t data) -{ - /* get byte and bit number of the given event in the event mask */ - const uint8_t position = id >> 3; - const uint8_t mask = 1 << (id & 0x7); - const struct event *current; - - ASSERT((id < EVENT_MAX_AMOUNT)); - - if (!(subscribed[position] & mask)) { - return; /* No subscribers */ - } - - /* Find all subscribers */ - for ((current = (const struct event *)list_get_head(&events)); current; - current = (const struct event *)list_get_next_element(current)) { - if (current->mask[position] & mask) { - current->cb(id, data); - } - } -} |