view src/gpf/ccd/asn1_objid.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
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/*
+------------------------------------------------------------------------------
|  File:       asn1_objid.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:    Encoding and decoding functions for ASN1_OBJ_ID type 
|
| $Identity:$
+------------------------------------------------------------------------------
*/

/*
 * Standard definitions like UCHAR, ERROR etc.
 */
#include "typedefs.h"
#include "header.h"

/*
 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only
 * look at ccdapi.h
 */
#undef USE_DRIVER
#include "ccdapi.h"

/*
 * Types and functions for bit access and manipulation
 */
#include "ccd_globs.h"
#include "bitfun.h"

/*
 * Prototypes and constants in the common part of ccd
 */
#include "ccd.h"

/*
 * Declaration of coder/decoder tables
 */
#include "ccdtable.h"
#include "ccddata.h"

#ifndef RUN_INT_RAM
/*
+------------------------------------------------------------------------+
| PROJECT : CCD (6144)              MODULE  : asn1_objid                 |
| STATE   : code                    ROUTINE : cdc_asn1_obj_id_decode     |
+------------------------------------------------------------------------+

  PURPOSE : Decode PER OBJECT IDENTIFIER type 

            The PER encoding of an object identifier type uses the 
            content octets of BER preceded by a length determinant
            that will in practice be a single octet.
*/
SHORT cdc_asn1_obj_id_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{
  U8    BER_Len;

#ifdef DEBUG_CCD
	#ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_asn1_obj_id_decode()");
	#else
	TRACE_CCD (globs, "cdc_asn1_obj_id_decode() %s", mcomp[melem[e_ref].elemRef].name);
	#endif
#endif

  globs->pstructOffs = melem[e_ref].structOffs;

  /* For optional elements we have already set the valid flag in the 
   * C-structure. We have done it while processing ASN1_SEQ.
   */
  if ( ! cdc_isPresent(e_ref, globs) ) {
    return 1;
  }

  /*
   * Skip over PER length octet and BER tag octet.
   */
  bf_incBitpos (16, globs);

  /*
   * For unknown extension read the length and skip over the octets.
   */
  BER_Len = (U8) bf_getBits (8, globs);
  *(U8 *)(globs->pstruct + globs->pstructOffs++) = BER_Len;

  /*
   * Copy the content of object identifier bytes into the C-Structure.
   */
#ifdef _TMS470
  bf_incBitpos (8 * BER_Len, globs);
#else
  {
    int i;
    for (i=0; i < BER_Len; i++)
      *(U8 *)(globs->pstruct + globs->pstructOffs++) = (U8) bf_getBits (8, globs);
  }
#endif

  return 1;
}
#endif /* !RUN_INT_RAM */

#ifndef RUN_INT_RAM
/*
+------------------------------------------------------------------------+
| PROJECT : CCD (6144)              MODULE  : asn1_objid                 |
| STATE   : code                    ROUTINE : cdc_asn1_obj_id_encode     |
+------------------------------------------------------------------------+

  PURPOSE : Encode PER OBJECT IDENTIFIER type

            The PER encoding of an object identifier type uses the 
            content octets of BER preceded by a length determinant
            that will in practice be a single octet.            
*/
SHORT cdc_asn1_obj_id_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{

#ifdef DEBUG_CCD
	#ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_asn1_obj_id_encode()");
	#else
	TRACE_CCD (globs, "cdc_asn1_obj_id_encode() %s", mcomp[melem[e_ref].elemRef].name);
	#endif
#endif

  return 1;
}
#endif /* !RUN_INT_RAM */