OVMS3-idf/components/app_trace/include/esp_app_trace.h

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// Copyright 2017 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 ESP_APP_TRACE_H_
#define ESP_APP_TRACE_H_
#include <stdarg.h>
#include "esp_err.h"
#include "freertos/portmacro.h"
/** Infinite waiting timeout */
#define ESP_APPTRACE_TMO_INFINITE ((uint32_t)-1)
/**
* Application trace data destinations bits.
*/
typedef enum {
ESP_APPTRACE_DEST_TRAX = 0x1, ///< JTAG destination
ESP_APPTRACE_DEST_UART0 = 0x2, ///< UART destination
} esp_apptrace_dest_t;
/**
* @brief Initializes application tracing module.
*
* @note Should be called before any esp_apptrace_xxx call.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_init();
/**
* @brief Allocates buffer for trace data.
* After data in buffer are ready to be sent off esp_apptrace_buffer_put must be called to indicate it.
*
* @param dest Indicates HW interface to send data.
* @param size Size of data to write to trace buffer.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return non-NULL on success, otherwise NULL.
*/
uint8_t *esp_apptrace_buffer_get(esp_apptrace_dest_t dest, size_t size, uint32_t tmo);
/**
* @brief Indicates that the data in buffer are ready to be sent off.
* This function is a counterpart of must be preceeded by esp_apptrace_buffer_get.
*
* @param dest Indicates HW interface to send data. Should be identical to the same parameter in call to esp_apptrace_buffer_get.
* @param ptr Address of trace buffer to release. Should be the value returned by call to esp_apptrace_buffer_get.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_buffer_put(esp_apptrace_dest_t dest, uint8_t *ptr, uint32_t tmo);
/**
* @brief Writes data to trace buffer.
*
* @param dest Indicates HW interface to send data.
* @param data Address of data to write to trace buffer.
* @param size Size of data to write to trace buffer.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_write(esp_apptrace_dest_t dest, const void *data, size_t size, uint32_t tmo);
/**
* @brief vprintf-like function to sent log messages to host via specified HW interface.
*
* @param dest Indicates HW interface to send data.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
* @param fmt Address of format string.
* @param ap List of arguments.
*
* @return Number of bytes written.
*/
int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t tmo, const char *fmt, va_list ap);
/**
* @brief vprintf-like function to sent log messages to host.
*
* @param fmt Address of format string.
* @param ap List of arguments.
*
* @return Number of bytes written.
*/
int esp_apptrace_vprintf(const char *fmt, va_list ap);
/**
* @brief Flushes remaining data in trace buffer to host.
*
* @param dest Indicates HW interface to flush data on.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_flush(esp_apptrace_dest_t dest, uint32_t tmo);
/**
* @brief Flushes remaining data in trace buffer to host without locking internal data.
* This is special version of esp_apptrace_flush which should be called from panic handler.
*
* @param dest Indicates HW interface to flush data on.
* @param min_sz Threshold for flushing data. If current filling level is above this value, data will be flushed. TRAX destinations only.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_flush_nolock(esp_apptrace_dest_t dest, uint32_t min_sz, uint32_t tmo);
/**
* @brief Reads host data from trace buffer.
*
* @param dest Indicates HW interface to read the data on.
* @param data Address of buffer to put data from trace buffer.
* @param size Pointer to store size of read data. Before call to this function pointed memory must hold requested size of data
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_read(esp_apptrace_dest_t dest, void *data, size_t *size, uint32_t tmo);
#endif