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/*
* SPDX-FileCopyrightText: 2017-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ESP_APP_TRACE_H_
#define ESP_APP_TRACE_H_
#include <stdarg.h>
#include "esp_err.h"
#include "esp_app_trace_util.h" // ESP_APPTRACE_TMO_INFINITE
#ifdef __cplusplus
extern "C" {
#endif
/**
* Application trace data destinations bits.
*/
typedef enum {
ESP_APPTRACE_DEST_JTAG = 1, ///< JTAG destination
ESP_APPTRACE_DEST_TRAX = ESP_APPTRACE_DEST_JTAG, ///< xxx_TRAX name is obsolete, use more common xxx_JTAG
ESP_APPTRACE_DEST_UART, ///< UART destination
ESP_APPTRACE_DEST_MAX = ESP_APPTRACE_DEST_UART+1,
ESP_APPTRACE_DEST_NUM
} 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(void);
/**
* @brief Configures down buffer.
* @note Needs to be called before attempting to receive any data using esp_apptrace_down_buffer_get and esp_apptrace_read.
* This function does not protect internal data by lock.
*
* @param buf Address of buffer to use for down channel (host to target) data.
* @param size Size of the buffer.
*/
void esp_apptrace_down_buffer_config(uint8_t *buf, uint32_t size);
/**
* @brief Allocates buffer for trace data.
* Once the data in the buffer is ready to be sent, 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 indefinitely.
*
* @return non-NULL on success, otherwise NULL.
*/
uint8_t *esp_apptrace_buffer_get(esp_apptrace_dest_t dest, uint32_t size, uint32_t tmo);
/**
* @brief Indicates that the data in the buffer is ready to be sent.
* This function is a counterpart of and must be preceded 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 indefinitely.
*
* @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 indefinitely.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_write(esp_apptrace_dest_t dest, const void *data, uint32_t size, uint32_t tmo);
/**
* @brief vprintf-like function to send 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 indefinitely.
* @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 send 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 indefinitely.
*
* @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 a 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 indefinitely.
*
* @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 indefinitely.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_read(esp_apptrace_dest_t dest, void *data, uint32_t *size, uint32_t tmo);
/**
* @brief Retrieves incoming data buffer if any.
* Once data in the buffer is processed, esp_apptrace_down_buffer_put must be called to indicate it.
*
* @param dest Indicates HW interface to receive data.
* @param size Address to store size of available data in down buffer. Must be initialized with requested value.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinitely.
*
* @return non-NULL on success, otherwise NULL.
*/
uint8_t *esp_apptrace_down_buffer_get(esp_apptrace_dest_t dest, uint32_t *size, uint32_t tmo);
/**
* @brief Indicates that the data in the down buffer is processed.
* This function is a counterpart of and must be preceded by esp_apptrace_down_buffer_get.
*
* @param dest Indicates HW interface to receive data. Should be identical to the same parameter in call to esp_apptrace_down_buffer_get.
* @param ptr Address of trace buffer to release. Should be the value returned by call to esp_apptrace_down_buffer_get.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinitely.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_down_buffer_put(esp_apptrace_dest_t dest, uint8_t *ptr, uint32_t tmo);
/**
* @brief Checks whether host is connected.
*
* @param dest Indicates HW interface to use.
*
* @return true if host is connected, otherwise false
*/
bool esp_apptrace_host_is_connected(esp_apptrace_dest_t dest);
/**
* @brief Opens file on host.
* This function has the same semantic as 'fopen' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param path Path to file.
* @param mode Mode string. See fopen for details.
*
* @return non zero file handle on success, otherwise 0
*/
void *esp_apptrace_fopen(esp_apptrace_dest_t dest, const char *path, const char *mode);
/**
* @brief Closes file on host.
* This function has the same semantic as 'fclose' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Zero on success, otherwise non-zero. See fclose for details.
*/
int esp_apptrace_fclose(esp_apptrace_dest_t dest, void *stream);
/**
* @brief Writes to file on host.
* This function has the same semantic as 'fwrite' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param ptr Address of data to write.
* @param size Size of an item.
* @param nmemb Number of items to write.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Number of written items. See fwrite for details.
*/
size_t esp_apptrace_fwrite(esp_apptrace_dest_t dest, const void *ptr, size_t size, size_t nmemb, void *stream);
/**
* @brief Read file on host.
* This function has the same semantic as 'fread' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param ptr Address to store read data.
* @param size Size of an item.
* @param nmemb Number of items to read.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Number of read items. See fread for details.
*/
size_t esp_apptrace_fread(esp_apptrace_dest_t dest, void *ptr, size_t size, size_t nmemb, void *stream);
/**
* @brief Set position indicator in file on host.
* This function has the same semantic as 'fseek' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
* @param offset Offset. See fseek for details.
* @param whence Position in file. See fseek for details.
*
* @return Zero on success, otherwise non-zero. See fseek for details.
*/
int esp_apptrace_fseek(esp_apptrace_dest_t dest, void *stream, long offset, int whence);
/**
* @brief Get current position indicator for file on host.
* This function has the same semantic as 'ftell' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Current position in file. See ftell for details.
*/
int esp_apptrace_ftell(esp_apptrace_dest_t dest, void *stream);
/**
* @brief Indicates to the host that all file operations are complete.
* This function should be called after all file operations are finished and
* indicate to the host that it can perform cleanup operations (close open files etc.).
*
* @param dest Indicates HW interface to use.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
int esp_apptrace_fstop(esp_apptrace_dest_t dest);
/**
* @brief Test end-of-file indicator on a stream.
* This function has the same semantic as 'feof' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Non-Zero if end-of-file indicator is set for stream. See feof for details.
*/
int esp_apptrace_feof(esp_apptrace_dest_t dest, void *stream);
/**
* @brief Triggers gcov info dump.
* This function waits for the host to connect to target before dumping data.
*/
void esp_gcov_dump(void);
#ifdef __cplusplus
}
#endif
#endif
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