https://docs.lvgl.io/8.2/porting/log.html
Logging
LVGL has a built-in Log module to inform the user about what is happening in the library.
Log level
| 英文
|
自動翻訳
|
|
To enable logging, set LV_USE_LOG 1 in lv_conf.h and set LV_LOG_LEVEL to one of the following values:
LV_LOG_LEVEL_TRACE A lot of logs to give detailed informationLV_LOG_LEVEL_INFO Log important eventsLV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problemLV_LOG_LEVEL_ERROR Only critical issues, where the system may failLV_LOG_LEVEL_USER Only user messagesLV_LOG_LEVEL_NONE Do not log anything
The events which have a higher level than the set log level will be logged too. E.g. if you LV_LOG_LEVEL_WARN, errors will be also logged.
|
|
- 戻る : Previous
Printing logs
Logging with printf
| 英文
|
自動翻訳
|
|
If your system supports printf, you just need to enable LV_LOG_PRINTF in lv_conf.h to send the logs with printf.
|
|
- 戻る : Previous
Custom log function
| 英文
|
自動翻訳
|
|
If you can't use printf or want to use a custom function to log, you can register a "logger" callback with lv_log_register_print_cb().
For example:
void my_log_cb(const char * buf)
{
serial_send(buf, strlen(buf));
}
...
lv_log_register_print_cb(my_log_cb);
|
|
- 戻る : Previous
Add logs
| 英文
|
自動翻訳
|
|
You can also use the log module via the LV_LOG_TRACE/INFO/WARN/ERROR/USER(text) functions.
|
|
- 戻る : Previous
