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47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2022 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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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Initialize PSRAM interface/hardware.
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*
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* @return
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* - ESP_OK: On success
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* - ESP_FAIL: PSRAM isn't initialized successfully, potential reason would be: wrong VDDSDIO, invalid chip ID, etc.
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* - ESP_ERR_INVALID_STATE: PSRAM is initialized already
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*/
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esp_err_t esp_psram_init(void);
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/**
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* @brief If PSRAM has been initialized
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*
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* @return
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* - true: PSRAM has been initialized successfully
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* - false: PSRAM hasn't been initialized or initialized failed
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*/
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bool esp_psram_is_initialized(void);
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/**
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* @brief Get the available size of the attached PSRAM chip
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*
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* @return Size in bytes, or 0 if PSRAM isn't successfully initialized
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*/
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size_t esp_psram_get_size(void);
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#ifdef __cplusplus
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}
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#endif
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