saving a light weight log to an sdcard

[georgejoseph]

Once you have created the log and filled it with data, and you want to periodically save this data to an sdcard, do you have to read each entry in the log and save individually or can you save the entire log to a file? The training video mentions that you can save to USB. What command is available? fprintf?

[georgejoseph]

Yes Daniel I am using MQX.

[danielchen]

I think you need to read each entry with _log_read, and save it individually.

You can use the following command to save it to USB .

MQX_FILE_PTR      log_fp;

log_fp = fopen(LOG_FILE,"a");

write(log_fp, XX, strlen(XX));

 fclose(log_fp);

Regards

Daniel

[danielchen]

Hi Jeorge Joseph:

Can you detail your question a little bit more? Do you use MQX or other RTOS?

Regards

Daniel