view src/cs/services/lls/lls_api.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 04aaa5622fa7
children
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/**
 * @file   lls_api.c
 *
 * Implementation of Functions.
 *
 * @author   Laurent Sollier (l-sollier@ti.com)
 * @version 0.1
 */

/*
 * History:
 *
 *   Date          Author       Modification
 *  ----------------------------------------
 *  03/12/2002     L Sollier    Create
 *
 *
 * (C) Copyright 2002 by Texas Instruments Incorporated, All Rights Reserved
 */

#ifndef _WINDOWS
   #include "l1sw.cfg"
   #include "chipset.cfg"
#endif

#include "lls/lls_api.h"
#include "lls/lls_env.h"
#include "lls/lls_i.h"


/** External declaration */
extern T_LLS_ENV_CTRL_BLK* lls_env_ctrl_blk;

/* FreeCalypso addition for L1 sleep manager */
unsigned char iota_ledb_status;


/**
 * @name Functions implementation
 *
 */
/*@{*/


/**
 * function: lls_switch_on
 */
T_RV_RET lls_switch_on(T_LLS_EQUIPMENT equipment_sort)
{
#if (ANLG_FAM == 2)
   T_RV_RET ret = RV_OK;
   UINT8 equipment_index;

   /* Check if initialization has been correctly done */
   if ( (lls_env_ctrl_blk == 0) || (lls_env_ctrl_blk->swe_is_initialized == FALSE) )
   {
      LLS_SEND_TRACE("LLS: Initialization is not yet done or failed", RV_TRACE_LEVEL_ERROR);
      return RV_INTERNAL_ERR;
   }

   LLS_SEND_TRACE_PARAM("LLS: Switch ON request for equipment", equipment_sort, RV_TRACE_LEVEL_DEBUG_HIGH);

   /* Retrieve index of the equipment in the table */
   ret = lls_search_index(equipment_sort, &equipment_index);

   if (ret != RV_OK)
   {
      LLS_SEND_TRACE("LLS: Equipment is unknown", RV_TRACE_LEVEL_ERROR);
      return ret;
   }

   /* FreeCalypso addition */
   if (equipment_sort == LLS_BACKLIGHT)
      iota_ledb_status = 1;

   ret = lls_manage_equipment(equipment_index, SWITCH_ON);

   return ret;

#else
   return RV_NOT_SUPPORTED;
#endif
}

/**
 * function: lls_switch_off
 *
 */
T_RV_RET lls_switch_off(T_LLS_EQUIPMENT equipment_sort)
{
#if (ANLG_FAM == 2)
   T_RV_RET ret = RV_OK;
   UINT8 equipment_index;

   /* Check if initialization has been correctly done */
   if ( (lls_env_ctrl_blk == 0) || (lls_env_ctrl_blk->swe_is_initialized == FALSE) )
   {
      LLS_SEND_TRACE("LLS: Initialization is not yet done or failed", RV_TRACE_LEVEL_ERROR);
      return RV_INTERNAL_ERR;
   }

   LLS_SEND_TRACE_PARAM("LLS: Switch OFF request for equipment", equipment_sort, RV_TRACE_LEVEL_DEBUG_HIGH);

   /* Retrieve index of the equipment in the table */
   ret = lls_search_index(equipment_sort, &equipment_index);

   if (ret != RV_OK)
   {
      LLS_SEND_TRACE("LLS: Equipment is unknown", RV_TRACE_LEVEL_ERROR);
      return ret;
   }

   ret = lls_manage_equipment(equipment_index, SWITCH_OFF);

   /* FreeCalypso addition */
   if (equipment_sort == LLS_BACKLIGHT)
      iota_ledb_status = 0;

   return ret;

#else
   return RV_NOT_SUPPORTED;
#endif
}


/*@}*/