LogHandler for SDcard

roshinc · June 7, 2017, 9:12pm

Hello

I was wondering if anyone has written a custom LogHandler that uses the sd card as a target?

if not is there a general approach to writing your own logHandler?

hagandh · November 2, 2017, 2:29pm

Have you found a solution for this? If not, I’ll take a stab at it this weekend. Is it a safe assumption that you use SdFat for your SD writing needs?

roshinc · November 2, 2017, 8:19pm

I made my own, it’s not too pretty though.

github.com

roshinc/wifi-stability/blob/master/src/SdLog.cpp

#include "SdFat.h"
#include "SdLog.h"
#include "externs.h"
#include "constants.h"

//Constructor
SDcardLogHandler::SDcardLogHandler(String system, LogLevel level,
  const LogCategoryFilters &filters) : LogHandler(level, filters), m_system(system){
    LogManager::instance()->addHandler(this);
  }

  /// Write the log message to SD Card.
  void SDcardLogHandler::log(String message) {
    File myFileSDLog; //Hold the log file.
    String time = Time.format(Time.now(), TIME_FORMAT_ISO8601_FULL); // Create a time stamp
    String logLine = String::format("%s %s %s - - - %s\n", time.c_str(), m_system.c_str(), message.c_str()); //Create a log line

    //Reset watchdog timer.
    wd.checkin();

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hagandh · November 7, 2017, 3:15pm

Awesome, thanks for the start! I’m having some issues with it (probably on my side) but will try to get it working today. How do you set the LOG_LEVEL and filters? It doesn’t seem to want to compile when using the same syntax as is used for the SerialLogHandler?

hagandh · November 8, 2017, 2:16pm

So I gave it a shot (adapted it a bit) and it seems to work great for the regular SPI bus, but won’t compile for the alternate SPI bus (SPI1). Any idea how to adapt the globals/externs to get it to work? Normally, one would just initialize the SdFat class with a (1) ex. SdFat sd(1); ?

roshinc · November 8, 2017, 2:30pm

I don’t have any time today. I’ll take a look and get back to you tomorrow.

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LogHandler for SDcard

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