esp-idf/components/perfmon/include/xtensa_perfmon_access.h

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// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _PERF_MON_ACCESS_H_
#define _PERF_MON_ACCESS_H_
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_log.h"
#ifdef __cplusplus
extern "C"
{
#endif
/**@{*/
/**
* @brief Init Performance Monitoor
*
* Initialize performance monitor register with define values
*
* @param[in] id: performance counter number
* @param[in] select: select value from PMCTRLx register
* @param[in] mask: mask value from PMCTRLx register
* @param[in] kernelcnt: kernelcnt value from PMCTRLx register
* @param[in] tracelevel: tracelevel value from PMCTRLx register
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if one of the arguments is not correct
*/
esp_err_t xtensa_perfmon_init(int id, uint16_t select, uint16_t mask, int kernelcnt, int tracelevel);
/**@}*/
/**@{*/
/**
* @brief Reset PM counter
*
* Reset PM counter. Writes 0 to the PMx register.
*
* @param[in] id: performance counter number
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if id out of range
*/
esp_err_t xtensa_perfmon_reset(int id);
/**@}*/
/**@{*/
/**
* @brief Start PM counters
*
* Start all PM counters synchronously. Write 1 to the PGM register
*/
void xtensa_perfmon_start(void);
/**@}*/
/**@{*/
/**
* @brief Stop PM counters
*
* Stop all PM counters synchronously. Write 0 to the PGM register
*/
void xtensa_perfmon_stop(void);
/**@}*/
/**@{*/
/**
* @brief Read PM counter
*
* Read value of defined PM counter.
*
* @param[in] id: performance counter number
*
* @return
* - Performance counter value
*/
uint32_t xtensa_perfmon_value(int id);
/**@}*/
/**@{*/
/**
* @brief Read PM overflow state
*
* Read overflow value of defined PM counter.
*
* @param[in] id: performance counter number
*
* @return
* - ESP_OK if there is no overflow (overflow = 0)
* - ESP_FAIL if overflow occure (overflow = 1)
*/
esp_err_t xtensa_perfmon_overflow(int id);
/**@}*/
/**@{*/
/**
* @brief Dump PM values
*
* Dump all PM register to the console.
*
*/
void xtensa_perfmon_dump(void);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif // _PERF_MON_ACCESS_H_