retargettextdisplay.c

Go to the documentation of this file.

/***************************************************************************/
#include <stdio.h>
#include <stdint.h>

#include "displayconfigall.h"
#include "display.h"
#include "textdisplay.h"
#include "retargettextdisplay.h"


/*******************************************************************************
 ********************************  STATICS  ************************************
 ******************************************************************************/

/* Handle which references the selected text display to print text on. */
TEXTDISPLAY_Handle_t  textDisplayHandle = 0;

/*******************************************************************************
 **************************     GLOBAL FUNCTIONS      **************************
 ******************************************************************************/

/**************************************************************************/
EMSTATUS RETARGET_TextDisplayInit(void)
{
  EMSTATUS              status;
  DISPLAY_Device_t      displayDevice;
  TEXTDISPLAY_Config_t  textDisplayConfig;

  /* Query that the specified DISPLAY device is available.  */
  status = DISPLAY_DeviceGet(RETARGETTEXTDISPLAY_DISPLAY_NO, &displayDevice);

  if (DISPLAY_EMSTATUS_OK == status)
  {
    textDisplayConfig.displayDeviceNo  = RETARGETTEXTDISPLAY_DISPLAY_NO;
    textDisplayConfig.scrollEnable     = RETARGETTEXTDISPLAY_SCROLL_MODE;
    textDisplayConfig.lfToCrLf         = RETARGETTEXTDISPLAY_LINE_FEED_MODE;

    status = TEXTDISPLAY_New(&textDisplayConfig, &textDisplayHandle);

#if !defined(__CROSSWORKS_ARM) && defined(__GNUC__)
    if (TEXTDISPLAY_EMSTATUS_OK == status)
    {
      /* Set unbuffered mode for stdout (newlib) */
      setvbuf(stdout, NULL, _IONBF, 0);
    }
#endif
  }

  return status;
}


/**************************************************************************/
int RETARGET_ReadChar(void)
{
  return -1;
}

/**************************************************************************/
int RETARGET_WriteChar(char c)
{
  if (textDisplayHandle)
  {
    TEXTDISPLAY_WriteChar(textDisplayHandle, c);
    return c;
  }
  else
    return -1;
}


/**************************************************************************/
EMSTATUS RETARGET_WriteString(char*   str)
{
  if (textDisplayHandle)
  {
    return TEXTDISPLAY_WriteString(textDisplayHandle, str);
  }
  else
    return TEXTDISPLAY_EMSTATUS_NOT_INITIALIZED;
}


/***************  THE REST OF THE FILE IS DOCUMENTATION ONLY !  ***************/

/*******************************************************************************
 **************************       DOCUMENTATION       **************************
 ******************************************************************************/

/**************************************************************************/