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- /*
- * Lua RTOS, mutex api implementation over FreeRTOS
- *
- * Copyright (C) 2015 - 2017
- * IBEROXARXA SERVICIOS INTEGRALES, S.L. & CSS IBÉRICA, S.L.
- *
- * Author: Jaume Olivé (jolive@iberoxarxa.com / jolive@whitecatboard.org)
- *
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for any purpose and without fee is hereby
- * granted, provided that the above copyright notice appear in all
- * copies and that both that the copyright notice and this
- * permission notice and warranty disclaimer appear in supporting
- * documentation, and that the name of the author not be used in
- * advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission.
- *
- * The author disclaim all warranties with regard to this
- * software, including all implied warranties of merchantability
- * and fitness. In no event shall the author be liable for any
- * special, indirect or consequential damages or any damages
- * whatsoever resulting from loss of use, data or profits, whether
- * in an action of contract, negligence or other tortious action,
- * arising out of or in connection with the use or performance of
- * this software.
- *
- * Modified by: LoBo (loboris@gmail.com / https://github.com/loboris)
- *
- */
-
- #include "freertos/FreeRTOS.h"
- #include "esp_attr.h"
- #include "mutex.h"
-
-
- #define portEND_SWITCHING_ISR(xSwitchRequired) \
- if (xSwitchRequired) { \
- _frxt_setup_switch(); \
- }
-
- extern unsigned port_interruptNesting[portNUM_PROCESSORS];
-
- void _mtx_init() {
- }
-
- void mtx_init(struct mtx *mutex, const char *name, const char *type, int opts) {
- mutex->sem = xSemaphoreCreateBinary();
-
- if (mutex->sem) {
- if (port_interruptNesting[xPortGetCoreID()] != 0) {
- BaseType_t xHigherPriorityTaskWoken = pdFALSE;
- xSemaphoreGiveFromISR( mutex->sem, &xHigherPriorityTaskWoken);
- portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
- } else {
- xSemaphoreGive( mutex->sem );
- }
- }
- }
-
- void IRAM_ATTR mtx_lock(struct mtx *mutex) {
- if (port_interruptNesting[xPortGetCoreID()] != 0) {
- BaseType_t xHigherPriorityTaskWoken = pdFALSE;
- xSemaphoreTakeFromISR( mutex->sem, &xHigherPriorityTaskWoken );
- portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
- } else {
- xSemaphoreTake( mutex->sem, portMAX_DELAY );
- }
- }
-
- int mtx_trylock(struct mtx *mutex) {
- if (xSemaphoreTake( mutex->sem, 0 ) == pdTRUE) {
- return 1;
- } else {
- return 0;
- }
- }
-
- void IRAM_ATTR mtx_unlock(struct mtx *mutex) {
- if (port_interruptNesting[xPortGetCoreID()] != 0) {
- BaseType_t xHigherPriorityTaskWoken = pdFALSE;
- xSemaphoreGiveFromISR( mutex->sem, &xHigherPriorityTaskWoken );
- portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
- } else {
- xSemaphoreGive( mutex->sem );
- }
- }
-
- void mtx_destroy(struct mtx *mutex) {
- if (port_interruptNesting[xPortGetCoreID()] != 0) {
- BaseType_t xHigherPriorityTaskWoken = pdFALSE;
- xSemaphoreGiveFromISR( mutex->sem, &xHigherPriorityTaskWoken );
- portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
- } else {
- xSemaphoreGive( mutex->sem );
- }
-
- vSemaphoreDelete( mutex->sem );
-
- mutex->sem = 0;
- }
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