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37 lines
772 B
C
37 lines
772 B
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <esp_types.h>
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#include "sdkconfig.h"
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#include "esp_log.h"
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#include "esp_err.h"
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#include "freertos/FreeRTOS.h"
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bool dvp_signal_used;
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static portMUX_TYPE s_spinlock = portMUX_INITIALIZER_UNLOCKED;
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esp_err_t dvp_shared_ctrl_claim_io_signals(void)
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{
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esp_err_t ret = ESP_ERR_NOT_FOUND;
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portENTER_CRITICAL(&s_spinlock);
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if (!dvp_signal_used) {
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dvp_signal_used = true;
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ret = ESP_OK;
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}
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portEXIT_CRITICAL(&s_spinlock);
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return ret;
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}
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esp_err_t dvp_shared_ctrl_declaim_io_signals(void)
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{
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portENTER_CRITICAL(&s_spinlock);
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dvp_signal_used = false;
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portEXIT_CRITICAL(&s_spinlock);
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return ESP_OK;
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}
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