lv_log.h¶

Defines

LV_LOG_LEVEL_TRACE¶: Log detailed information.

LV_LOG_LEVEL_INFO¶: Log important events.

LV_LOG_LEVEL_WARN¶: Log if something unwanted happened but didn't caused problem.

LV_LOG_LEVEL_ERROR¶: Log only critical issues, when system may fail.

LV_LOG_LEVEL_USER¶: Log only custom log messages added by the user.

LV_LOG_LEVEL_NONE¶: Do not log anything.

LV_LOG_LEVEL_NUM¶: Number of log levels

LV_LOG_FILE¶

LV_LOG_LINE¶

LV_LOG_TRACE(...)¶

LV_LOG_INFO(...)¶

LV_LOG_WARN(...)¶

LV_LOG_ERROR(...)¶

LV_LOG_USER(...)¶

LV_LOG(...)¶

Typedefs

typedef int8_t lv_log_level_t¶

typedef void (*lv_log_print_g_cb_t)(lv_log_level_t level, const char *buf)¶: Log print function. Receives a string buffer to print".

Functions

void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)¶

Register custom print/write function to call when a log is added. It can format its "File path", "Line number" and "Description" as required and send the formatted log message to a console or serial port.

Parameters:: print_cb – a function pointer to print a log

void lv_log(const char *format, ...)¶

Print a log message via printf if enabled with LV_LOG_PRINTF in lv_conf.h and/or a print callback if registered with lv_log_register_print_cb

Parameters:

format – printf-like format string
... – parameters for format

void lv_log_add(lv_log_level_t level, const char *file, int line, const char *func, const char *format, ...)¶

Add a log

Parameters:

level – the level of log. (From lv_log_level_t enum)
file – name of the file when the log added
line – line number in the source code where the log added
func – name of the function when the log added
format – printf-like format string
... – parameters for format