view src/gpf/ccd/ccd_patch.c @ 72:7bf39f5e834d

backlight control on Luna: switch PWL instead of LEDB This change is preliminary toward upcoming rework of backlight control logic in our UI firmware. LEDB does not exist on Tango-based platforms (it is not brought out on Tango modules), thus turning it on and off produces absolutely no effect beyond making L1 disable deep sleep when LEDB is turned on. However, both iWOW DSK and our upcoming FC Caramel2 boards have a PWL LED, so let's switch that LED on and off to indicate the state of the UI firmware's backlight control. Note that we are NOT switching the actual Luna LCD backlight here, even though it is trivially controlled with a GPIO. The reason for this seemingly strange choice is that we don't want to turn this development board LCD backlight off until we bring the higher-level backlight control logic up to par, including new logic to "swallow" the first keypress that turns on the darkened LCD.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 24 Oct 2020 07:39:54 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   : ccd_patch.c
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  CCD -  routines for patching msg elements with given values
+----------------------------------------------------------------------------- 
*/ 

#define CCD_PATCH_C

/*==== INCLUDES ==============================================================*/
#include <stdio.h>
#include <string.h>

#include "typedefs.h"
#include "ccd_globs.h"
#include "Bitfun.h"
#include "ccddata.h"
#include "ccd.h"

/*==== CONSTS ================================================================*//*==== TYPES =================================================================*/
/*==== LOCALS ================================================================*/
static T_patch_info* pi;

/*==== PRIVATE FUNCTIONS =====================================================*/
/*==== PUBLIC FUNCTIONS ======================================================*/

/*
+------------------------------------------------------------------------------
|  Function     :  ccd_set_patch_infos
+------------------------------------------------------------------------------
|  Description  :  This function submits a list of patch records to CCD
|
|  Parameters   :  pinfo - the list
|
|  Return       :  ccdOK on success, otherwise ccdError
+------------------------------------------------------------------------------
*/
int CCDDATA_PREF(ccd_set_patch_infos) (T_patch_info* pinfo)
{
  pi = pinfo;
  return ccdOK;
}

/*
+------------------------------------------------------------------------------
|  Function     :  ccd_patch
+------------------------------------------------------------------------------
|  Description  :  This function checks if the element is to be patched
|                  and patches if yes.
|
|  Parameters   :  globs - entity/code information (containing nesting stack)
|                  validflag - set if called from valid flag coding
|
|  Return       :  FALSE if real coding function is to be called, TRUE otherwise
|                  if validflag is set, TRUE means, the element is identified
|                  in the patch list
+------------------------------------------------------------------------------
*/

int ccd_patch (T_CCD_Globs* globs, int validflag)
{
  int i = 0;
  USHORT elem;
  if (pi)
  {
    while (pi[i].numelems)
    {
      if (!memcmp (pi[i].elemid, globs->error_stack,
                   (pi[i].numelems+1) * sizeof (U16)))
      {
        elem = pi[i].elemid[pi[i].numelems];
        if (validflag)
        {
          if (pi[i].errorcode != CCDP_NOT_FOUND)
          {
#ifdef DEBUG_CCD
            TRACE_CCD (globs, "ccd_patch(): invalid error code (%d) for %s",
                        pi[i].errorcode, ccddata_get_alias (elem, 1));
#endif
          }
          else
          {
#ifdef DEBUG_CCD
            TRACE_CCD (globs, "ccd_patch(): checked valid flag for %s",
                        ccddata_get_alias (elem, 1));
#endif
            pi[i].errorcode = CCDP_VALIDFLAG_SEEN;
          }
          return TRUE;
        }
        else
        {
          if ((pi[i].errorcode != CCDP_NOT_FOUND) &&
              (pi[i].errorcode != CCDP_VALIDFLAG_SEEN))
          {
#ifdef DEBUG_CCD
            TRACE_CCD (globs, "ccd_patch(): invalid error code (%d) for %s",
                        pi[i].errorcode, ccddata_get_alias (elem, 1));
#endif
          }
          else
          {
            UBYTE* pstruct = globs->pstruct;
            ULONG offset = globs->pstructOffs;
#ifdef DEBUG_CCD
            int j, len;
            char out[32];
            len = (pi[i].bitwidth+7)/8;
            TRACE_CCD (globs, "ccd_patch(): patching %s with 0x%x bits",
                        ccddata_get_alias (elem, 1), pi[i].bitwidth);
            for (j=0; j<len; j++)
            {
              sprintf (&out[(3*j)%24], "%02x \0", pi[i].bits[j]);
              if (!((j+1)%8))
                TRACE_CCD (globs, out);
            }
            if (((j+1)%8))
              TRACE_CCD (globs, out);
#endif
            globs->pstruct = pi[i].bits;
            globs->pstructOffs = 0;
            bf_writeBitChunk (pi[i].bitwidth, globs);
            globs->pstruct = pstruct;
            globs->pstructOffs = offset;
            pi[i].errorcode = CCDP_NO_ERROR;
          }
          return TRUE;
        }
      }
      i++;
    }
  }
  return FALSE;
}