File content as of revision 1:bd1844de60f1:

/* dbg.cpp */
/*
Copyright (C) 2012 ARM Limited.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#include "dbg.h"

#include "mbed.h"
#include "rtos.h"

#include <cstdio>
#include <cstdarg>

using namespace std;

static Serial debug_pc(USBTX, USBRX);

Mutex* debug_printf_mutex; //Singleton runtime initialisation to avoid static initialisation chaos problems

static char debug_newline[3];

void debug_init()
{
  debug_set_newline("\n");
  debug_pc.baud(115200);
  debug_printf_mutex = new Mutex();
  printf("[START]\n");
  fflush(stdout);
}

void debug_set_newline(const char* newline)
{
  strncpy( debug_newline, newline, 2 );
  debug_newline[2] = '\0';
}

void debug(int level, const char* module, int line, const char* fmt, ...)
{
  osStatus ret = debug_printf_mutex->lock();
  if(ret != osOK)
  {
    /*
    printf("[FATAL] DBG Mutex failed!! (ret code = %02x - Mutex is @ %p)\n", ret, &debug_printf_mutex);
    error("");
    while(1); //FATAL
    */
  }
  switch(level)
  {
  default:
  case 1:
    printf("[ERROR]");
    break;
  case 2:
    printf("[WARN]");
    break;
  case 3:
    printf("[INFO]");
    break;
  case 4:
    printf("[DBG]");
    break;
  }

  printf(" Module %s - Line %d: ", module, line);

  va_list argp;

  va_start(argp, fmt);
  vprintf(fmt, argp);
  va_end(argp);

  printf(debug_newline);

  fflush(stdout);

  if(ret == osOK)
  {
    debug_printf_mutex->unlock();
  }

}

void debug_error(const char* module, int line, int ret)
{
  debug_printf_mutex->lock();
  printf("[RC] Module %s - Line %d : Error %d\n", module, line, ret);
  fflush(stdout);
  debug_printf_mutex->unlock();
}

void debug_exact(const char* fmt, ...)
{
  osStatus ret = debug_printf_mutex->lock();
  if(ret != osOK)
  {
    /*
    printf("[FATAL] DBG Mutex failed!! (ret code = %02x - Mutex is @ %p)\n", ret, &debug_printf_mutex);
    error("");
    while(1); //FATAL
    */
  }
  
  va_list argp;

  va_start(argp, fmt);
  vprintf(fmt, argp);
  va_end(argp);
  
  if(ret == osOK)
  {
    debug_printf_mutex->unlock();
  }
}